GB728952A - Boron-containing hard cemented materials and production thereof - Google Patents
Boron-containing hard cemented materials and production thereofInfo
- Publication number
- GB728952A GB728952A GB14922/51A GB1492251A GB728952A GB 728952 A GB728952 A GB 728952A GB 14922/51 A GB14922/51 A GB 14922/51A GB 1492251 A GB1492251 A GB 1492251A GB 728952 A GB728952 A GB 728952A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boron
- boride
- metal
- excess
- per cent
- 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)
- Ceramic Products (AREA)
Abstract
A refractory composition consists of cemented particles of at least one major ingredient and an additional ingredient compressed and heated between 1200 DEG -2500 DEG C. whereby a liquid phase of some of the substances of the ingredients is formed, the major ingredient consisting of a boride or a boride and a carbide of at least one of the metals zirconium, titanium, tungsten, molybdenum, vanadium and chromium, and which contains 2-50 per cent of boron which forms the metal boride, the additional ingredient consisting of an excess of boron above that combining into the boride, the said excess constituting 2 to 25 per cent of the composition. Preferably, the composition analyses, in percentages, carbon 3-12; boron 15-35; and metal 53-82.ALSO:A refractory composition consists of cemented particles of at least one major ingredient and an additional ingredient compressed and heated between 1200 DEG -2500 DEG C. whereby a liquid phase of some of the substances of the ingredients is formed, the major ingredient consisting of a boride or a boride and a carbide of at least one of the metals of zirconium, titanium, tungsten, molybdenum, vanadium and chromium, and which contains 2 to 50 per cent of boron which forms the metal boride, the additional ingredient consisting of an excess of boron above that combining into the metal boride, the said excess of boron constituting 2 to 25 per cent by weight of the composition. Preferably the composition analyses, in percentages, carbon 3-12; boron (total) 15-35; and metal 53-82. The ingredients are finely ground in a ball-mill under an oxidation suppressing cover of a bath of saturated hydrocarbons, in an inert gas, and the preferred particle size is 2 microns or less.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US728952XA | 1950-06-24 | 1950-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB728952A true GB728952A (en) | 1955-04-27 |
Family
ID=22110391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14922/51A Expired GB728952A (en) | 1950-06-24 | 1951-06-22 | Boron-containing hard cemented materials and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB728952A (en) |
-
1951
- 1951-06-22 GB GB14922/51A patent/GB728952A/en not_active Expired
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