US3128178A - Tantalum-titanium base alloy - Google Patents
Tantalum-titanium base alloy Download PDFInfo
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- US3128178A US3128178A US92151A US9215161A US3128178A US 3128178 A US3128178 A US 3128178A US 92151 A US92151 A US 92151A US 9215161 A US9215161 A US 9215161A US 3128178 A US3128178 A US 3128178A
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- tantalum
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- 229910045601 alloy Inorganic materials 0.000 title description 31
- 239000000956 alloy Substances 0.000 title description 31
- VSSLEOGOUUKTNN-UHFFFAOYSA-N tantalum titanium Chemical compound [Ti].[Ta] VSSLEOGOUUKTNN-UHFFFAOYSA-N 0.000 title description 3
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052715 tantalum Inorganic materials 0.000 claims description 10
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 150000007513 acids Chemical class 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- 239000010955 niobium Substances 0.000 claims description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 22
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 17
- 238000005260 corrosion Methods 0.000 description 17
- 230000007797 corrosion Effects 0.000 description 17
- 235000011007 phosphoric acid Nutrition 0.000 description 12
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 11
- 229910052759 nickel Inorganic materials 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 208000021017 Weight Gain Diseases 0.000 description 5
- 230000004584 weight gain Effects 0.000 description 5
- 235000019786 weight gain Nutrition 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003708 ampul Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910001362 Ta alloys Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- WHMSMGOTLMHZNQ-UHFFFAOYSA-N [Ti].[Ni].[Ta] Chemical compound [Ti].[Ni].[Ta] WHMSMGOTLMHZNQ-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011260 aqueous acid Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/02—Alloys based on vanadium, niobium, or tantalum
Definitions
- This invention relates to tantalum-titanium base metal alloys, particularly to such alloys which contain alloying metals of vanadium and nickel as essential components, which make the resulting alloys ductile and resistant to corrosion by hot oxidizing and hot non-oxidizing acids.
- Alloys with the above properties are most useful for lining chemical reaction vessels, auxiliary equipment and connecting lines, which are exposed to hot phosphoric acid and hot sulfuric acid.
- Liquid phosphoric acid is recognized as an efficient catalyst for certain organic chemical reactions, including alkylation and isomerization and the polymerization of normally gaseous olefins. Corrosive attack appears to be the greatest with aqueous solutions of about 85% phosphoric acid. While considerable progress has been made in controlling corrosion in the presence of liquid phosphoric acid (see, for example, Kemp and Zeh Patent 2,65 3,177 and Piehl Patent 2,854,- 497), there is need for further improvement and particularly for alloys which are also resistant to corrosion in the presence of hot oxidizing acids such as sulfuric acid. Sulfonations, cleavage and hydrolysis reactions often employ hot sulfuric acid. The most corrosive concentration for hot aqueous solutions of sulfuric acid appears to be about 55 sulfuric acid.
- Prior art alloys are poor in corrosion resistance in the presence of either or both hot phosphoric acid and hot sulfuric acid. Usually resistance to sulfuric acid corrosion is readily attained, but the characteristic of resistance to corrosion by hot phospohric acid is difiicult to add. Even more diflicult is to retain these corrosion resistant characteristics in an alloy that is ductile and can be worked sufficiently so that it can be used without sole reliance upon casting as the method of shaping.
- the metal alloy of this invention has the above desirable characteristics. It is a tantalum base alloy comprised by Weight of about 10 to 30% titanium, 3 to 10% vanadium and 0.25 to 3% nickel. Preferably, for good workability and ductility, the alloy contains 20 to 25% titanium and 5 to 7.5% vanadium. Without vanadium, a tantalum-titanium-nickel alloy was extremely difficult to work, either in cold rolling or hot rolling with protective cladding. *For use with the most corrosive hot phosphoric acid concentrations, i.e., about 85%, the alloy should contain at least 0.5%, and preferably about 1%, of nickel. Optionally, columbium and tungsten can be added.
- Tungsten in amounts to serves to increase further the resistance to hydrogen embrittlement as well as to stabilize and to add strength to the alloy.
- the alloy shoud contain no less than 30%, and preferably at least 50% of tantalum.
- the carbon content of the alloy should be no more than 0.03%; the oxygen content, no more than about 0.05%; the nitrogen con-tent, no more than 0.008%; the hydrogen content, no more than about 0.001%.
- the carbon content of the alloy should be no more than 0.03%; the oxygen content, no more than about 0.05%; the nitrogen con-tent, no more than 0.008%; the hydrogen content, no more than about 0.001%.
- the resulting metal sandwiches of alloys were rolled at 2000 The rolling was done in a Stana-t two-high mill and the metal was reduced 7.5% to 15% per pass to a total of about
- the alloys were tested for corrosion by exposing them to solutions of 55% sulfuric acid and phosphoric acid sealed in heavy-wall Pyrex ampules. Alloy specimens were prepared by grinding, sanding and finishing of surfaces and edges, and degreasing. Surface areas (generally about 6.5 cm. weights and densities were then determined. The density was measured by weight-in weight-out of water method. The volumes of sulfuric acid and phosphoric acid solutions were 40 and 30 ml., respectively.
- alloys Nos. 1 and 2 without nickel the high penetration or corrosion rates in phosphoric acid show considerable hydrogen embrittlement.
- alloy compositions 3, 4 and 5 were ductile and were readily hot rolled to give slight weight gains in the corrosion tests.
- the weight gain shows the formation of an insoluble protective film on the metal surface.
- the weight gain becomes constant. For example, alloy No. 5, upon exposure to 85% phosphoric acid at 400 F. gained no further weight after continuing the run for 164 hours. Testing alloy No. 5 under the same conditions for a total of 336 hours showed that the constant weight was attained in 48 hours. Similarly, alloy No. 4 when tests in 55% sulfuric acid at 450 F.
- a ductile metal composition resistant to the action of hot oxidizing and non-oxidizing acids consisting essentially of, in percent by weight, 1030% of titanium, 3-10% of vanadium, .25 to 3% of nickel, up to 25 columbium, up to 10 tungsten, and the balance essentially tantalum, with the tantalum being present in an amount of at least 2.
- a ductile metal composition resistant to the action of hot oxidizing and non-oxidizing acids consisting essentially of, in percent by weight, 20-25% of titanium, 5-7.5% of vanadium, 0.5 to 3% of nickel, up to 25% columbi-um, up to "10% tungsten, and the balance essentially tantalum, with the tantalum being present in an amount of at least References Cited in the file of this patent UNITED STATES PATENTS 1,588,518 Brace June 15, 1926 2,964,399 Lyons Dec. 13, 1960 FOREIGN PATENTS 803,855 Great Britain Apr. 3, 1957 201,297 Austria Dec. 27, 1958
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Arc Welding In General (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Description
United States Patent 3,128,178 TANTALUM-TTTANIUM BASE ALLQY Edward F. Dutieir, in, Mountain View, Qalit, assignor to California Research florporation, an Francisco, Calif.,
a corporation of Delaware No Drawing. Filed Feb. 28, 1961, Ser. No. 92,151 2 Claims. (=Cl. 75--174) This invention relates to tantalum-titanium base metal alloys, particularly to such alloys which contain alloying metals of vanadium and nickel as essential components, which make the resulting alloys ductile and resistant to corrosion by hot oxidizing and hot non-oxidizing acids.
Alloys with the above properties are most useful for lining chemical reaction vessels, auxiliary equipment and connecting lines, which are exposed to hot phosphoric acid and hot sulfuric acid. Liquid phosphoric acid is recognized as an efficient catalyst for certain organic chemical reactions, including alkylation and isomerization and the polymerization of normally gaseous olefins. Corrosive attack appears to be the greatest with aqueous solutions of about 85% phosphoric acid. While considerable progress has been made in controlling corrosion in the presence of liquid phosphoric acid (see, for example, Kemp and Zeh Patent 2,65 3,177 and Piehl Patent 2,854,- 497), there is need for further improvement and particularly for alloys which are also resistant to corrosion in the presence of hot oxidizing acids such as sulfuric acid. Sulfonations, cleavage and hydrolysis reactions often employ hot sulfuric acid. The most corrosive concentration for hot aqueous solutions of sulfuric acid appears to be about 55 sulfuric acid.
Prior art alloys are poor in corrosion resistance in the presence of either or both hot phosphoric acid and hot sulfuric acid. Usually resistance to sulfuric acid corrosion is readily attained, but the characteristic of resistance to corrosion by hot phospohric acid is difiicult to add. Even more diflicult is to retain these corrosion resistant characteristics in an alloy that is ductile and can be worked sufficiently so that it can be used without sole reliance upon casting as the method of shaping.
The metal alloy of this invention has the above desirable characteristics. It is a tantalum base alloy comprised by Weight of about 10 to 30% titanium, 3 to 10% vanadium and 0.25 to 3% nickel. Preferably, for good workability and ductility, the alloy contains 20 to 25% titanium and 5 to 7.5% vanadium. Without vanadium, a tantalum-titanium-nickel alloy was extremely difficult to work, either in cold rolling or hot rolling with protective cladding. *For use with the most corrosive hot phosphoric acid concentrations, i.e., about 85%, the alloy should contain at least 0.5%, and preferably about 1%, of nickel. Optionally, columbium and tungsten can be added. Up to 15%, and sometimes up to 25%, of columbium can be used where lighter weight is an important factor. Tungsten in amounts to serves to increase further the resistance to hydrogen embrittlement as well as to stabilize and to add strength to the alloy. However, the alloy shoud contain no less than 30%, and preferably at least 50% of tantalum.
We have found that, as compared to high temperature air oxidation, corrosion in aqueous conditions such as with the above aqueous acids is much more sensitive to impurities in the metal components of the alloy. Hence, impurities in the alloy should be kept to a minimum for the best results. Most desirably, the carbon content of the alloy should be no more than 0.03%; the oxygen content, no more than about 0.05%; the nitrogen con-tent, no more than 0.008%; the hydrogen content, no more than about 0.001%. 'In addition, no more than about 0.3% of the combined elements aluminum, chromium,
3,128,178 Patented Apr. 7, 1964 controlled atmospheres of argon, helium and the like are employed. Arc furnaces with water-cooled copper hearths and non-consumable electrodes (e.g. 2% thoriatedtungsten tip) were used in the preparations described below. Measured amounts of the metal components were The alloy compositions, all in terms of weight percent, were melted, the button of alloy inverted, and remelted four times before final cooling and solidifying. Alternatively, other furnaces and known melting techniques such as with continuous feed of metal components, inductive heating, or other means could be used with adequate protection against contamination.
In the folloding illustrative examples, most of the all'oys'were clad in 310 stainless steel to avoid oxidation at the high temperatures used in fabrication. Cladding was done by lathe machining the alloy button into circular discs, enclosing them inside a 3 x 3 x A-inch steel sheet having a circular hole in the middle, and welding 2% x 2% x As-inch steel plates on each side. The resulting metal sandwiches of alloys were rolled at 2000 The rolling was done in a Stana-t two-high mill and the metal was reduced 7.5% to 15% per pass to a total of about The alloys were tested for corrosion by exposing them to solutions of 55% sulfuric acid and phosphoric acid sealed in heavy-wall Pyrex ampules. Alloy specimens were prepared by grinding, sanding and finishing of surfaces and edges, and degreasing. Surface areas (generally about 6.5 cm. weights and densities were then determined. The density was measured by weight-in weight-out of water method. The volumes of sulfuric acid and phosphoric acid solutions were 40 and 30 ml., respectively. C-ontaminations due to silica formation in the phosphoric acid tests were avoided by liners of Teflon tubing inside the glass ampules. The corrosion tests were for 72 hours. From the measurements of weight loss, density and surface area, the penetration or corrosion rates in mils per year (i.e., m.p.y.) were determined.
The following table shows the results of tests carried out as described above:
Composition, percent Corrosion rates,
by weight In.p.y.
Number 557 857 Ta Ti v Ni rnsoi at Hard, at
25 5 0 2.5 67. 25 7. 5 0 2.5 61. 25 5 1 Wt. Wt.
galn. gain. 25 7. 5 1 d0 D03 25 5 2 do Do.
1 Weight gain of about .001 gms/cmfl. 2 Weight gain of about .003 gms./cm.
The above tests illustrate the need for nickel in the composition. In alloys Nos. 1 and 2 without nickel, the high penetration or corrosion rates in phosphoric acid show considerable hydrogen embrittlement. On the other hand, alloy compositions 3, 4 and 5 were ductile and were readily hot rolled to give slight weight gains in the corrosion tests. The weight gain shows the formation of an insoluble protective film on the metal surface. The weight gain becomes constant. For example, alloy No. 5, upon exposure to 85% phosphoric acid at 400 F. gained no further weight after continuing the run for 164 hours. Testing alloy No. 5 under the same conditions for a total of 336 hours showed that the constant weight was attained in 48 hours. Similarly, alloy No. 4 when tests in 55% sulfuric acid at 450 F. for a total of 168 hours reached a constant weight in about 48 hours. Unalloyed tantalum or the tantalum alloys Nos. 1 and 2 above show under such conditions a steadily increasing weight loss. The alloys of the present invention are therefore superior since corrosion and hence hydrogen embrittlement are minimized.
For comparison, an alloy without titanium and composed of 74% tantalum, 25 vanadium and 1% nickel recrystallized and cracked on attempted rolling at 2000 F. after cladding. Further, solutionizing of this alloy for 68 hours at 1900 F. did not improve the workability.
Other ductile tantalum-titanium base alloys which illustrate the corrosion resistance (to hot sulfuric and phosphoric acids) alloy compositions of the present in vention are tabulated as follows:
[Cmpositlon, percent by weight] These various ductile, corrosion resistant alloys of the present invention are preferably used as lining materials for vessels and other equipment. They can be applied after rolling or other suitablejabricating manner by conventional methods of welding, brazing, vacuum joining, and the like.
I claim:
1, A ductile metal composition resistant to the action of hot oxidizing and non-oxidizing acids and consisting essentially of, in percent by weight, 1030% of titanium, 3-10% of vanadium, .25 to 3% of nickel, up to 25 columbium, up to 10 tungsten, and the balance essentially tantalum, with the tantalum being present in an amount of at least 2. A ductile metal composition resistant to the action of hot oxidizing and non-oxidizing acids and consisting essentially of, in percent by weight, 20-25% of titanium, 5-7.5% of vanadium, 0.5 to 3% of nickel, up to 25% columbi-um, up to "10% tungsten, and the balance essentially tantalum, with the tantalum being present in an amount of at least References Cited in the file of this patent UNITED STATES PATENTS 1,588,518 Brace June 15, 1926 2,964,399 Lyons Dec. 13, 1960 FOREIGN PATENTS 803,855 Great Britain Apr. 3, 1957 201,297 Austria Dec. 27, 1958
Claims (1)
1. A DUCTILE METAL COMPOSITION RESISTANT TO THE ACTION OF HOT OXIDIZING AND NON-OXIDIZING ACIDS AND CONSISTING ESSENTIALLY OF, IN PERCENT BY WEIGHT, 10-30% OF TITANIUM, 3-10% OF VANADIUM, .25 TO 3% OF NICKEL, UP TO 25% COLUMBIUM, UP TO 10% TUNGSTEN, AND THE BALANCE ESSENTIALLY TANTALUM, WITH THE TANTALUM BEING PRESENT IN AN AMOUNT OF AT LEAST 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US92151A US3128178A (en) | 1961-02-28 | 1961-02-28 | Tantalum-titanium base alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US92151A US3128178A (en) | 1961-02-28 | 1961-02-28 | Tantalum-titanium base alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3128178A true US3128178A (en) | 1964-04-07 |
Family
ID=22231879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US92151A Expired - Lifetime US3128178A (en) | 1961-02-28 | 1961-02-28 | Tantalum-titanium base alloy |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3128178A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3249429A (en) * | 1963-12-27 | 1966-05-03 | Clo E Armantrout | Tantalum brazing alloy |
| US3293741A (en) * | 1964-04-20 | 1966-12-27 | Ralph G Gilliland | Brazing alloys for refractory metals |
| US3449118A (en) * | 1966-11-15 | 1969-06-10 | Us Navy | Vanadium-columbium-tantalum alloys |
| US4496373A (en) * | 1981-12-11 | 1985-01-29 | Kernforschungsanlage Julich Gesellschaft Mit Beschrankter Haftung | Diffusion membrane and process for separating hydrogen from gas mixture |
| US20060153729A1 (en) * | 2005-01-13 | 2006-07-13 | Stinson Jonathan S | Medical devices and methods of making the same |
| US20070276488A1 (en) * | 2003-02-10 | 2007-11-29 | Jurgen Wachter | Medical implant or device |
| US20080038146A1 (en) * | 2003-02-10 | 2008-02-14 | Jurgen Wachter | Metal alloy for medical devices and implants |
| US20080312740A1 (en) * | 2003-02-10 | 2008-12-18 | Jurgen Wachter | Metal alloy for medical devices and implants |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1588518A (en) * | 1919-04-18 | 1926-06-15 | Westinghouse Electric & Mfg Co | Alloy of tantalum |
| GB803855A (en) * | 1957-04-03 | 1958-11-05 | Du Pont | Improvements in or relating to niobium alloys |
| AT201297B (en) * | 1957-10-11 | 1958-12-27 | Plansee Metallwerk | Refractory sintered alloy |
| US2964399A (en) * | 1959-06-25 | 1960-12-13 | Titanium Metals Corp | Tantalum-titanium corrosion resistant alloy |
-
1961
- 1961-02-28 US US92151A patent/US3128178A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1588518A (en) * | 1919-04-18 | 1926-06-15 | Westinghouse Electric & Mfg Co | Alloy of tantalum |
| GB803855A (en) * | 1957-04-03 | 1958-11-05 | Du Pont | Improvements in or relating to niobium alloys |
| AT201297B (en) * | 1957-10-11 | 1958-12-27 | Plansee Metallwerk | Refractory sintered alloy |
| US2964399A (en) * | 1959-06-25 | 1960-12-13 | Titanium Metals Corp | Tantalum-titanium corrosion resistant alloy |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3249429A (en) * | 1963-12-27 | 1966-05-03 | Clo E Armantrout | Tantalum brazing alloy |
| US3293741A (en) * | 1964-04-20 | 1966-12-27 | Ralph G Gilliland | Brazing alloys for refractory metals |
| US3449118A (en) * | 1966-11-15 | 1969-06-10 | Us Navy | Vanadium-columbium-tantalum alloys |
| US4496373A (en) * | 1981-12-11 | 1985-01-29 | Kernforschungsanlage Julich Gesellschaft Mit Beschrankter Haftung | Diffusion membrane and process for separating hydrogen from gas mixture |
| US20080038146A1 (en) * | 2003-02-10 | 2008-02-14 | Jurgen Wachter | Metal alloy for medical devices and implants |
| US20070276488A1 (en) * | 2003-02-10 | 2007-11-29 | Jurgen Wachter | Medical implant or device |
| US20080312740A1 (en) * | 2003-02-10 | 2008-12-18 | Jurgen Wachter | Metal alloy for medical devices and implants |
| US20100222866A1 (en) * | 2003-02-10 | 2010-09-02 | Jurgen Wachter | Metal alloy for medical devices and implants |
| US8349249B2 (en) | 2003-02-10 | 2013-01-08 | Heraeus Precious Metals Gmbh & Co. Kg | Metal alloy for medical devices and implants |
| US8403980B2 (en) | 2003-02-10 | 2013-03-26 | Heraeus Materials Technology Gmbh & Co. Kg | Metal alloy for medical devices and implants |
| US20060153729A1 (en) * | 2005-01-13 | 2006-07-13 | Stinson Jonathan S | Medical devices and methods of making the same |
| US7727273B2 (en) | 2005-01-13 | 2010-06-01 | Boston Scientific Scimed, Inc. | Medical devices and methods of making the same |
| US20100228336A1 (en) * | 2005-01-13 | 2010-09-09 | Stinson Jonathan S | Medical devices and methods of making the same |
| US7938854B2 (en) | 2005-01-13 | 2011-05-10 | Boston Scientific Scimed, Inc. | Medical devices and methods of making the same |
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