GB379681A - Alloys and methods of making same - Google Patents

Alloys and methods of making same

Info

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
Application number
GB9550/31A
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.)
FANSTEEL PROD CO Inc
Original Assignee
FANSTEEL PROD CO Inc
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 FANSTEEL PROD CO Inc filed Critical FANSTEEL PROD CO Inc
Publication of GB379681A publication Critical patent/GB379681A/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
    • C22C29/14—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.
GB9550/31A 1930-05-29 1931-03-30 Alloys and methods of making same Expired GB379681A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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