GB898811A - Process of grain-refining molybdenum or tungsten - Google Patents

Process of grain-refining molybdenum or tungsten

Info

Publication number
GB898811A
GB898811A GB1204461A GB1204461A GB898811A GB 898811 A GB898811 A GB 898811A GB 1204461 A GB1204461 A GB 1204461A GB 1204461 A GB1204461 A GB 1204461A GB 898811 A GB898811 A GB 898811A
Authority
GB
United Kingdom
Prior art keywords
tungsten
grain
refining
molybdenum
refining molybdenum
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
GB1204461A
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.)
Stauffer Chemical Co
Original Assignee
Stauffer Chemical Co
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 Stauffer Chemical Co filed Critical Stauffer Chemical Co
Publication of GB898811A publication Critical patent/GB898811A/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
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00—Obtaining refractory metals
    • C22B34/30—Obtaining chromium, molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
    • C22C27/04—Alloys based on tungsten or molybdenum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Fine-grained Mo or W is produced by adding 0,01-0,3% B to the metal, vacuum-melting the mixture and allowing it to solidify. The B may be added as crystalline or amorphous boron, boron carbide or a boride of a refractory metal.
GB1204461A 1960-04-11 1961-04-04 Process of grain-refining molybdenum or tungsten Expired GB898811A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2114260A 1960-04-11 1960-04-11

Publications (1)

Publication Number Publication Date
GB898811A true GB898811A (en) 1962-06-14

Family

ID=21802577

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1204461A Expired GB898811A (en) 1960-04-11 1961-04-04 Process of grain-refining molybdenum or tungsten

Country Status (4)

Country Link
BE (1) BE602441A (en)
CH (1) CH394624A (en)
GB (1) GB898811A (en)
LU (1) LU39983A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292078A (en) * 1978-11-07 1981-09-29 Nippon Tungsten Co., Ltd. Electrical contact material
CN108018453A (en) * 2017-12-14 2018-05-11 武汉理工大学 A kind of W/B4C heterogeneous composite materials and smelting preparation method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853703B2 (en) * 1980-07-08 1983-11-30 株式会社東芝 Molybdenum material with excellent hot workability
US4755712A (en) * 1986-12-09 1988-07-05 North American Philips Corp. Molybdenum base alloy and lead-in wire made therefrom
US5120738A (en) * 1989-10-06 1992-06-09 Fujirebio Inc. Pantothenic acid derivatives

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292078A (en) * 1978-11-07 1981-09-29 Nippon Tungsten Co., Ltd. Electrical contact material
CN108018453A (en) * 2017-12-14 2018-05-11 武汉理工大学 A kind of W/B4C heterogeneous composite materials and smelting preparation method
CN108018453B (en) * 2017-12-14 2019-10-01 武汉理工大学 A kind of W/B4C heterogeneous composite material and smelting preparation method

Also Published As

Publication number Publication date
BE602441A (en) 1961-10-11
CH394624A (en) 1965-06-30
LU39983A1 (en) 1961-06-07

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