CH209201A - Palladium-ruthenium alloy. - Google Patents
Palladium-ruthenium alloy.Info
- Publication number
- CH209201A CH209201A CH209201DA CH209201A CH 209201 A CH209201 A CH 209201A CH 209201D A CH209201D A CH 209201DA CH 209201 A CH209201 A CH 209201A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- ruthenium
- palladium
- copper
- alloy
- Prior art date
Links
- 229910000929 Ru alloy Inorganic materials 0.000 title claims description 8
- OYJSZRRJQJAOFK-UHFFFAOYSA-N palladium ruthenium Chemical compound [Ru].[Pd] OYJSZRRJQJAOFK-UHFFFAOYSA-N 0.000 title claims description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 27
- 229910045601 alloy Inorganic materials 0.000 claims description 19
- 239000000956 alloy Substances 0.000 claims description 19
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 16
- 229910052707 ruthenium Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 229910052763 palladium Inorganic materials 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005494 tarnishing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/04—Alloys based on a platinum group metal
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Adornments (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Palladium-Ruthenium-Legierung. Die Erfindung bezieht sich auf eine Legie rung, die Ruthenium und Palladium enthält.
Palladium ist bekanntlich ein verhältnis mässig weiches Metall, sowohl im ausgeglüh ten als im hart bearbeiteten Zustand. Es ist auch bekannt, dass Palladium durch Legie ren mit Ruthenium gehärtet werden kann. Indessen ist das Gefüge von Palladium- Ruthenium-Legierungen kein gutes.
Die Be standteile neigen dazu, der Bildung eines gleichmässigen kristallinen Gefüges zu wi derstreben; die Folge davon ist, dass die här teren Rutheniumteilchen in der Legierung als Streifen erscheinen, besonders wenn die Legierung poliert wird. Überdies werden die Palladium - Ruthenium - Legierungen so gut wie unbearbeitbar, wenn sie mehr als 10 Ruthenium enthalten.
Es wurde nun gefunden, dass diese Nach teile der Palladium-Ruthenium-Legierungen behoben oder verkleinert werden können, in dem zu dem Palladium und Ruthenium ein Zusatz von Kupfer gemacht wird. Das Kup fer wirkt als gegenseitiges Lösungsmittel für das Palladium und Ruthenium und führt demgemäss zu einer Legierung von gleich mässigem Gefüge. Die Legierungen gemäss der Erfindung sind hart aber nicht spröde, lassen sich auf Hochglanz polieren, wider stehen der Oxydation und dem Anlaufen und sind leicht zu bearbeiten.
Infolgedessen kön nen sie zu vielen verschiedenartigen Gegen ständen einfacher und komplizierter Formen, z. B. Schmuckwaren, Schreibfedern, Kontak ten für elektrische Schalter, Spinndüsen zur Herstellung von Kunstseide, elektrischen Widerstandsdrähten, Zahnersatzteilen usw. verarbeitet werden.
Die erfindungsgemässe Legierung enthält mindestens 70 % Palladium und einen Zusatz von Kupfer. Die Verhältnisse der die Legie rung zusammensetzenden Metalle können sich sonst in weiten Grenzen ändern. Die Palla- diummenge liegt vorzugsweise zwischen 80 und 98,%,. Der Rutheniumgehalt kann bis auf 0,5 % heruntergehen oder bis zu 15 % steigen, liegt aber vorzugsweise zwischen 1 Lind 10%. Der Gehalt an Kupfer kann ähnlich zwischen 0,5 und 15 % schwanken, jedoch liegt er vor zugsweise zwischen 1 und 10 % .
Die beson ders bevorzugte Legierung enthält<B>93,5%</B> Palladium, etwa 3,5% Ruthenium und etwa 3 % Kupfer.
Das tberraschende an der Erfindung ist die Entdeckung, dass die 3längel der bekann ten Palladium-Ruthenium-Legierungen beho ben oder verkleinert werden durch den Zu satz von Kupfer zu dem Palladium und Ruthenium. Diese bemerkenswerte Wirkung von Kupfer zeigt sich besonders bei der Härte der Legierungen.
Bisher wurden Legierungen
EMI0002.0012
Pd <SEP> Ru <SEP> Cu <SEP> Brinellhärte <SEP> (2 <SEP> mm <SEP> Kugel, <SEP> 120 <SEP> kg <SEP> Druck)
<tb> <B>0/0 <SEP> % <SEP> 0,10</B> <SEP> hart <SEP> bearbeitet <SEP> geglüht <SEP> 1000 <SEP> 15 <SEP> Minuten.
<tb> 98 <SEP> 1 <SEP> 1 <SEP> 109 <SEP> 89
<tb> 95 <SEP> 4 <SEP> 1 <SEP> 158 <SEP> 89
<tb> 93.5 <SEP> 4.5 <SEP> 2 <SEP> 175 <SEP> 107
<tb> 95 <SEP> 2 <SEP> 3 <SEP> 123 <SEP> 74
<tb> 93.5 <SEP> 3.5 <SEP> 3 <SEP> 163 <SEP> 90
<tb> 80 <SEP> 10 <SEP> 10 <SEP> 227 <SEP> 166
<tb> 70 <SEP> 15 <SEP> 15 <SEP> 237 <SEP> 152
<tb> 84.5 <SEP> 0.5 <SEP> 15 <SEP> 178 <SEP> 101
<tb> 84.5 <SEP> 15 <SEP> 0.5 <SEP> 229 <SEP> 198
Palladium-ruthenium alloy. The invention relates to an alloy containing ruthenium and palladium.
Palladium is known to be a relatively moderately soft metal, both in the annealed as in the hard-worked state. It is also known that palladium can be hardened by alloying it with ruthenium. However, the structure of palladium-ruthenium alloys is not good.
The constituents tend to strive against the formation of a uniform crystalline structure; the result is that the harder ruthenium particles appear as streaks in the alloy, especially when the alloy is being polished. In addition, the palladium - ruthenium alloys become as good as unworkable if they contain more than 10 ruthenium.
It has now been found that these parts of the palladium-ruthenium alloys can be remedied or reduced by adding copper to the palladium and ruthenium. The copper acts as a mutual solvent for the palladium and ruthenium and accordingly leads to an alloy with a uniform structure. The alloys according to the invention are hard but not brittle, can be polished to a high gloss, resist oxidation and tarnishing and are easy to work with.
As a result, they can NEN to many different items of simple and complicated shapes, such. B. jewelry, pens, Kontak th for electrical switches, spinnerets for the production of rayon, electrical resistance wires, dental prostheses, etc. are processed.
The alloy according to the invention contains at least 70% palladium and an addition of copper. The proportions of the metals composing the alloy can otherwise change within wide limits. The amount of palladium is preferably between 80 and 98%. The ruthenium content can go down to 0.5% or increase up to 15%, but is preferably between 1 and 10%. The copper content can similarly vary between 0.5 and 15%, but it is preferably between 1 and 10%.
The particularly preferred alloy contains <B> 93.5 </B> palladium, about 3.5% ruthenium and about 3% copper.
The surprising thing about the invention is the discovery that the lengths of the known palladium-ruthenium alloys are fixed or reduced by adding copper to the palladium and ruthenium. This remarkable effect of copper is particularly evident in the hardness of the alloys.
So far, alloys
EMI0002.0012
Pd <SEP> Ru <SEP> Cu <SEP> Brinell hardness <SEP> (2 <SEP> mm <SEP> ball, <SEP> 120 <SEP> kg <SEP> pressure)
<tb> <B> 0/0 <SEP>% <SEP> 0.10 </B> <SEP> hard <SEP> machined <SEP> annealed <SEP> 1000 <SEP> 15 <SEP> minutes.
<tb> 98 <SEP> 1 <SEP> 1 <SEP> 109 <SEP> 89
<tb> 95 <SEP> 4 <SEP> 1 <SEP> 158 <SEP> 89
<tb> 93.5 <SEP> 4.5 <SEP> 2 <SEP> 175 <SEP> 107
<tb> 95 <SEP> 2 <SEP> 3 <SEP> 123 <SEP> 74
<tb> 93.5 <SEP> 3.5 <SEP> 3 <SEP> 163 <SEP> 90
<tb> 80 <SEP> 10 <SEP> 10 <SEP> 227 <SEP> 166
<tb> 70 <SEP> 15 <SEP> 15 <SEP> 237 <SEP> 152
<tb> 84.5 <SEP> 0.5 <SEP> 15 <SEP> 178 <SEP> 101
<tb> 84.5 <SEP> 15 <SEP> 0.5 <SEP> 229 <SEP> 198
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US187660A US2132116A (en) | 1938-01-29 | 1938-01-29 | Alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH209201A true CH209201A (en) | 1940-03-31 |
Family
ID=22689912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH209201D CH209201A (en) | 1938-01-29 | 1938-08-04 | Palladium-ruthenium alloy. |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2132116A (en) |
| CH (1) | CH209201A (en) |
| DE (1) | DE692208C (en) |
| GB (1) | GB510640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009059046A1 (en) * | 2009-12-14 | 2011-06-16 | Wieland Dental + Technik Gmbh & Co. Kg | Palladium jewelry alloy, useful in semi-finished product for jewelry industry, comprises palladium, ruthenium and/or niobium, and a further metal comprising copper, tungsten or rhenium |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1092212B (en) * | 1957-04-20 | 1960-11-03 | Degussa | Use of a noble metal alloy as a material for resistors, especially for potentiometer wires |
| DE1092213B (en) * | 1957-04-20 | 1960-11-03 | Degussa | Use of a noble metal alloy as a material for resistors, especially for potentiometer wires |
| US4387072A (en) * | 1982-04-27 | 1983-06-07 | The J. M. Ney Company | Novel palladium alloy and dental restorations utilizing same |
| US4419325A (en) * | 1982-07-21 | 1983-12-06 | Jeneric Industries, Inc. | Dental alloys for porcelain-fused-to-metal restorations |
| US4451639A (en) * | 1982-07-21 | 1984-05-29 | Jeneric Industries, Inc. | Dental alloys for porcelain-fused-to-metal restorations |
| US4400350A (en) * | 1982-09-29 | 1983-08-23 | W. C. Heraeus Gmbh | Palladium dental alloy |
| US4412970A (en) * | 1982-12-06 | 1983-11-01 | Jeneric Industries, Inc. | Palladium based dental alloys |
| US4518564A (en) * | 1983-10-03 | 1985-05-21 | Jeneric Industries, Inc. | Gallium and silver free, palladium based dental alloys for porcelain-fused-to-metal restorations |
| FR2617191B1 (en) * | 1987-06-26 | 1989-12-08 | Louyot Comptoir Lyon Alemand | NEW PALLADIUM-BASED ALLOYS CONTAINING AT LEAST ONE ADDITION ELEMENT SELECTED FROM THE GROUP CONSISTING OF INDIUM, ANTIMONY, BISMUTH, CADMIUM, ZINC, COPPER AND MONEY, ESPECIALLY USED IN THE INDUSTRY GLASS AND USE OF SUCH ALLOYS IN THE GLASS INDUSTRY |
| RU2352660C2 (en) * | 2007-01-09 | 2009-04-20 | Федеральное государственное образовательное учреждение высшего профессионального образования Сибирский федеральный университет | Alloy on basis of palladium |
| RU2349660C1 (en) * | 2007-08-08 | 2009-03-20 | Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" (ОАО "Красцветмет") | Jewelry alloy on basis of palladium |
| RU2349659C1 (en) * | 2007-08-08 | 2009-03-20 | Открытое акционерное общество "Красноярский завод цветных металлов имени В.Н. Гулидова" (ОАО "Красцветмет") | Jewelry alloy of white color on basis of palladium |
-
1938
- 1938-01-29 US US187660A patent/US2132116A/en not_active Expired - Lifetime
- 1938-07-30 GB GB22749/38A patent/GB510640A/en not_active Expired
- 1938-08-03 DE DE1938B0184136 patent/DE692208C/en not_active Expired
- 1938-08-04 CH CH209201D patent/CH209201A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009059046A1 (en) * | 2009-12-14 | 2011-06-16 | Wieland Dental + Technik Gmbh & Co. Kg | Palladium jewelry alloy, useful in semi-finished product for jewelry industry, comprises palladium, ruthenium and/or niobium, and a further metal comprising copper, tungsten or rhenium |
Also Published As
| Publication number | Publication date |
|---|---|
| GB510640A (en) | 1939-08-04 |
| DE692208C (en) | 1940-06-14 |
| US2132116A (en) | 1938-10-04 |
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