GB613356A - Improvements relating to hard alloys resistant to oxidation at elevated temperatures - Google Patents

Improvements relating to hard alloys resistant to oxidation at elevated temperatures

Info

Publication number
GB613356A
GB613356A GB1874346A GB1874346A GB613356A GB 613356 A GB613356 A GB 613356A GB 1874346 A GB1874346 A GB 1874346A GB 1874346 A GB1874346 A GB 1874346A GB 613356 A GB613356 A GB 613356A
Authority
GB
United Kingdom
Prior art keywords
per cent
carbide
hard alloys
oxidation
ingots
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
Application number
GB1874346A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hard Metal Tools Ltd
Original Assignee
Hard Metal Tools Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hard Metal Tools Ltd filed Critical Hard Metal Tools Ltd
Priority to GB1874346A priority Critical patent/GB613356A/en
Publication of GB613356A publication Critical patent/GB613356A/en
Expired legal-status Critical Current

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
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds

Abstract

Sintered hard alloys consist of a solid solution or mixed crystals of chromium carbide and titanium carbide containing 5-35 per cent, preferably 10-20 per cent, of chromium carbide to which has been added an auxiliary binder in amount from 10-60 per cent, preferably 40-50 per cent, of the whole composition, such auxiliary binder being chosen from one or more of the metals cobalt, nickel and iron. The alloy may be made by heating a mixture of titanium dioxide, chromic oxide and finely divided carbon, preferably in the form of lampblack, in a reducing atmosphere or vacuum, e.g., to a temperature of about 2000 DEG C., reducing the double carbide so produced to a fine powder, intimately mixing the powder with the binder metal, pressing the mixture to ingots which are presintered in reducing atmosphere or vacuum, machining the ingots to pieces of the desired shape and finally sintering in the said atmosphere, e.g. at 1250 DEG -1450 DEG C.
GB1874346A 1946-06-21 1946-06-21 Improvements relating to hard alloys resistant to oxidation at elevated temperatures Expired GB613356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1874346A GB613356A (en) 1946-06-21 1946-06-21 Improvements relating to hard alloys resistant to oxidation at elevated temperatures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1874346A GB613356A (en) 1946-06-21 1946-06-21 Improvements relating to hard alloys resistant to oxidation at elevated temperatures

Publications (1)

Publication Number Publication Date
GB613356A true GB613356A (en) 1948-11-25

Family

ID=10117634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1874346A Expired GB613356A (en) 1946-06-21 1946-06-21 Improvements relating to hard alloys resistant to oxidation at elevated temperatures

Country Status (1)

Country Link
GB (1) GB613356A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765227A (en) * 1950-12-16 1956-10-02 Sintercast Corp America Titanium carbide composite material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765227A (en) * 1950-12-16 1956-10-02 Sintercast Corp America Titanium carbide composite material

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