GB379681A - Alloys and methods of making same - Google Patents
Alloys and methods of making sameInfo
- Publication number
- GB379681A GB379681A GB9550/31A GB955031A GB379681A GB 379681 A GB379681 A GB 379681A GB 9550/31 A GB9550/31 A GB 9550/31A GB 955031 A GB955031 A GB 955031A GB 379681 A GB379681 A GB 379681A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alloy
- vacuo
- refractory metal
- tantalum
- degasefication
- 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
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/14—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on borides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
An alloy for tools &c., is composed of a preponderant proportion of a boride of a refractory metal such as tantalum, niobium or vanadium and an auxiliary metal of the iron group. In making the alloy boron and the refractory metal in just sufficient or in slight excess of quantity required to combine with the boron after a thorough mixing in a ball mill are placed in a tantalum crucible surrounded by tantalum powder inside a graphite crucible and heated in an evacuated electric furnace. The boride is ground and after degasefication by heating in vacuo in an electric furnace is thoroughly mixed with a hydrogen reduced auxiliary metal, shaped under great pressure and finally heated in vacuo. All traces of embrittling gases are removed from the alloy by heating each of the components to a degasefication temperature in 2 vacuo before or after mixing with the other components. The Specification as open to inspection under Sect. 91 (3) (a) includes also tungsten and molybdenum borides as examples of refractory metal borides. This subject-matter does not appear in the Specification as accepted.ALSO:An alloy for tools &c. is composed of a preponderant proportion of a boride of a refractory metal such as tantalum, niobium or vanadium and an auxiliary metal of the iron group. In making the alloy boron and the refractory metal in just sufficient or in slight excess of the quantity required to combine with the boron, after a thorough mixing in a ball mill, are placed in a tantalum crucible surrounded by tantalum powder inside a graphite crucible and heated in an evacuated electric furnace. The boride is ground and after degasefication by heating in vacuo in an electric furnace is thoroughly mixed with a hydrogen reduced auxiliary metal, shaped under great pressure and finally heated in vacuo. All traces of embrittling gases are removed from the alloy by heating each of the components to a degasefication temperature in vacuo before or after mixing with the other components. The Specification as open to inspection under Sect. 91 (3) (a) includes also tungsten and molybdenum borides as examples of refractory metal borides. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US379681XA | 1930-05-29 | 1930-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB379681A true GB379681A (en) | 1932-08-30 |
Family
ID=21897340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9550/31A Expired GB379681A (en) | 1930-05-29 | 1931-03-30 | Alloys and methods of making same |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB379681A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4626407A (en) * | 1979-02-16 | 1986-12-02 | United Technologies Corporation | Method of making amorphous boron carbon alloy cutting tool bits |
US4652183A (en) * | 1979-02-16 | 1987-03-24 | United Technologies Corporation | Amorphous boron-carbon alloy tool bits and methods of making the same |
US5088202A (en) * | 1988-07-13 | 1992-02-18 | Warner-Lambert Company | Shaving razors |
-
1931
- 1931-03-30 GB GB9550/31A patent/GB379681A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4626407A (en) * | 1979-02-16 | 1986-12-02 | United Technologies Corporation | Method of making amorphous boron carbon alloy cutting tool bits |
US4652183A (en) * | 1979-02-16 | 1987-03-24 | United Technologies Corporation | Amorphous boron-carbon alloy tool bits and methods of making the same |
US5088202A (en) * | 1988-07-13 | 1992-02-18 | Warner-Lambert Company | Shaving razors |
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