GB388090A - Improvements in and relating to metal compositions - Google Patents
Improvements in and relating to metal compositionsInfo
- Publication number
- GB388090A GB388090A GB24276/31A GB2427631A GB388090A GB 388090 A GB388090 A GB 388090A GB 24276/31 A GB24276/31 A GB 24276/31A GB 2427631 A GB2427631 A GB 2427631A GB 388090 A GB388090 A GB 388090A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- tantalum
- mixture
- temperature
- nickel
- 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
- C22C1/053—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 hard compounds
- C22C1/055—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 hard compounds using carbon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Tantalum carbide is prepared by intimately mixing tantalum with carbon, and firing the mixture in a closed graphite tube in a hydrogen furnace at a temperature of about 1550-1600 DEG C. Specification 213,524, [Class 1 (ii), Inorganic compounds, other than &c.], is referred to. Reference has been directed by the Comptroller to Specifications 373,708 and 376,299.ALSO:A hard composition suitable for a cutting-tool bit consists of tantalum carbide and a metal binder such as nickel. The composition is prepared by intimately mixing tantalum with carbon, firing the mixture in a closed graphite tube in a hydrogen furnace at a temperature of about 1550-1600 DEG C., grinding the carbide so obtained and mixing it with the binding metal, pressing the mixture to the desired shape, and sintering it in a closed graphite crucible in a hydrogen furnace at a temperature of about 1300 DEG C. Iron or cobalt may be used as the binding metal. A tool bit thus formed may be copper brazed to a steel shank. Specification 213,524, [Class 82 (i), Metals, Extracting &c.], is referred to. The Specification as open to inspection under Sect. 91 comprises also the use of nickel alloys, e.g. an alloy containing 45 per cent of nickel and 55 per cent of tungsten, or an alloy consisting of about 47 per cent of iron and 53 per cent of molybdenum, as binding material for the tantalum carbide. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 373,708 and 376,299.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US388090XA | 1930-08-28 | 1930-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB388090A true GB388090A (en) | 1933-02-23 |
Family
ID=21902022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24276/31A Expired GB388090A (en) | 1930-08-28 | 1931-08-28 | Improvements in and relating to metal compositions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB388090A (en) |
-
1931
- 1931-08-28 GB GB24276/31A patent/GB388090A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB471784A (en) | Improvements in and relating to hard metal tools for machining or shaping materials | |
| GB388090A (en) | Improvements in and relating to metal compositions | |
| US1913100A (en) | Method of making hard alloys | |
| GB389564A (en) | Improvements in and relating to metal compositions | |
| GB390236A (en) | Improvements in and relating to metal compositions | |
| GB390554A (en) | Improvements in and relating to metal compositions | |
| US1893078A (en) | Sintered hard metal alloy | |
| GB436939A (en) | Improvements in and relating to hard metal compositions | |
| GB396129A (en) | Improvements in and relating to metal compositions | |
| GB348641A (en) | Improvements relating to alloys | |
| GB361363A (en) | An improved tool alloy | |
| US2053151A (en) | Cemented tantalum carbide | |
| GB303751A (en) | Improvements in and relating to hard metal compositions | |
| GB405119A (en) | Improvements in or relating to the manufacture of hard alloys | |
| GB387684A (en) | An improved alloy for tools and working appliances and a process for the production of the same | |
| GB359303A (en) | Improvements in or relating to lathes or other like machine tools | |
| GB461872A (en) | An improved method for the production of sintered hard metal alloys | |
| GB370566A (en) | Improvements in or relating to hard metal alloys | |
| GB391984A (en) | Improvements in hard alloys | |
| GB391933A (en) | Improvements in and relating to metal compositions | |
| GB514035A (en) | Improvements in or relating to methods of preparing hard compositions of matter containing metallic carbides | |
| GB436255A (en) | Improvements in or relating to hard metal compositions | |
| GB471966A (en) | Tool elements and hard alloys therefor | |
| GB376299A (en) | Method of making hard alloys for cutting tools | |
| GB448423A (en) | Improvements in and relating to compositions for use in applying hard facing material to metal articles |