GB941886A - Improvements in or relating to metalliferous compositions - Google Patents
Improvements in or relating to metalliferous compositionsInfo
- Publication number
- GB941886A GB941886A GB20670/60A GB2067060A GB941886A GB 941886 A GB941886 A GB 941886A GB 20670/60 A GB20670/60 A GB 20670/60A GB 2067060 A GB2067060 A GB 2067060A GB 941886 A GB941886 A GB 941886A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- oxygen
- oxides
- dispersion
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
- C22C1/057—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of phases other than hard compounds by solid state reaction sintering, e.g. metal phase formed by reduction reaction
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Metals or alloys from the group the oxides of which have heats of formation at 27 DEG C. within the range 30 to 105 kilocals. per gram atom of oxygen (i.e. Cu, Cd, Tl, Ge, Sn, Pb, Sb, Bi, Ni, Co, Fe, Mo, W, Re, In, Zn, Cr. Mn, Nb, Te, Si, V, Ti), or alloys at least one constituent of which is from that group, have their properties improved by the incorporation therein of submicron particles of one or more refractory oxides having a melting point above 1000 DEG C. and a heat of formation at 1000 DEG C. in excess of 60 kilocals per gram-atom of oxygen, (i.e. Y2O3, CaO, La2O3, BeO, ThO2, MgO, UO2, HfO2, CeO2, Al2O3, ZrO2, BaO, ZrSiO4, TiO, TiO2, SIO2, Ta2O5, V2O3, NbO2, Cr2O3, including also silicates, titanates vanadates, chromates, zirconates and spinels), and preferably at least 52+ 0.016M. where M. is the melting point of the metal or alloy in DEG K. The composition is produced by depositing a hydrous oxygen-containing compound of the metal to be improved together with substantially discrete particles of compounds which when heated to constant weight at 1500 DEG C. form the refractory oxide or oxides, reducing the hydrous compounds to metal while maintaining a temperature below the sintering temperature of the metal or alloy to form a powder product, sintering the said product until its surface area is less than 10 square meters/gram, mixing the sintered powder dispersion with metal powder, sintering the mixture to form a product having a density 60-100% of its absolute density, and hot working. The ratio of dispersion: metal powder may be 0.3:1 to 2.5:1 by volume, and the ratio of refractory oxide: metal in the dispersion may be up to 1 : 1 by volume, but is generally 0.01-0.35 : 1. The hydrous compounds of the metal or metals may be precipitated from a solution of their salts on to the refractory oxide in the form of an aquasol. Specifications 667,154, 699,557, 938,546 and U.S.A. Specifications 2,731,326 and 2,750,345 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20670/60A GB941886A (en) | 1960-06-13 | 1960-06-13 | Improvements in or relating to metalliferous compositions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20670/60A GB941886A (en) | 1960-06-13 | 1960-06-13 | Improvements in or relating to metalliferous compositions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB941886A true GB941886A (en) | 1963-11-13 |
Family
ID=10149719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20670/60A Expired GB941886A (en) | 1960-06-13 | 1960-06-13 | Improvements in or relating to metalliferous compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB941886A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3397979A (en) * | 1966-01-10 | 1968-08-20 | Fansteel Metallurgical Corp | Process for incorporating aluminum into dispersion-modified metals |
| DE1290723B (en) * | 1964-11-30 | 1969-03-13 | Plansee Metallwerk | Use of a zirconium oxide-containing material for resistance to oxidic melts with high resistance to oxidic melts at high temperatures, in particular to glass melts |
| EP0170651A4 (en) * | 1984-01-31 | 1986-07-24 | Scm Corp | Metal modified dispersion strengthened copper. |
| GB2276376A (en) * | 1990-10-08 | 1994-09-28 | Matsushita Electric Works Ltd | Ceramic-metal composites |
-
1960
- 1960-06-13 GB GB20670/60A patent/GB941886A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1290723B (en) * | 1964-11-30 | 1969-03-13 | Plansee Metallwerk | Use of a zirconium oxide-containing material for resistance to oxidic melts with high resistance to oxidic melts at high temperatures, in particular to glass melts |
| US3397979A (en) * | 1966-01-10 | 1968-08-20 | Fansteel Metallurgical Corp | Process for incorporating aluminum into dispersion-modified metals |
| EP0170651A4 (en) * | 1984-01-31 | 1986-07-24 | Scm Corp | Metal modified dispersion strengthened copper. |
| GB2276376A (en) * | 1990-10-08 | 1994-09-28 | Matsushita Electric Works Ltd | Ceramic-metal composites |
| GB2276376B (en) * | 1990-10-08 | 1995-07-05 | Matsushita Electric Works Ltd | Method of making a sintered ceramic-metal composite product |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB611515A (en) | An improved heat-resisting machinable alloy for use as electric resistance material for high temperatures as well as for manufacturing details of construction exposed to high temperatures | |
| GB1524586A (en) | High temperature oxidation resistant cerment compositions | |
| GB730703A (en) | Magnetic materials and methods of manufacturing such materials | |
| US3501287A (en) | Metal-metal oxide compositions | |
| US3753699A (en) | Refractory metal alloys for use in oxidation environments | |
| GB1454350A (en) | Sintered vitreous bodies | |
| GB941886A (en) | Improvements in or relating to metalliferous compositions | |
| US3044867A (en) | Method for the production of metallicceramic materials | |
| GB1064932A (en) | Coloured metal-glass composites | |
| US3533760A (en) | Dispersion strengthened nickel-chromium alloy composition | |
| US2033707A (en) | Vitreous enamel opacifier | |
| GB1223043A (en) | Chromium alloys of dispersion-modified iron-group metals | |
| US2872726A (en) | Sintered hard compositions | |
| US3165417A (en) | High strength beryllia articles | |
| US2767463A (en) | Metallo-ceramic compositions and process of producing same | |
| GB1479539A (en) | Sintered products | |
| US2490570A (en) | Pyrophoric alloys of lead and zirconium and sparking devices containing the same | |
| GB1137934A (en) | Nickel refractory oxide compositions in powder form | |
| GB938546A (en) | Improvements in or relating to metalliferous compositions | |
| US2668118A (en) | Electric insulator | |
| US3226328A (en) | Method for making lithium nickel ferrite having a substantially rectangular hysteresis loop | |
| GB949569A (en) | Improvements in or relating to metalliferous compositions | |
| GB737398A (en) | Improvements in or relating to the manufacture of alloys | |
| US2995517A (en) | Ferrites containing niobium | |
| US2986523A (en) | Modified lithium ferrite |