GB1025655A - Sintering method - Google Patents

Sintering method

Info

Publication number
GB1025655A
GB1025655A GB8360/63A GB836063A GB1025655A GB 1025655 A GB1025655 A GB 1025655A GB 8360/63 A GB8360/63 A GB 8360/63A GB 836063 A GB836063 A GB 836063A GB 1025655 A GB1025655 A GB 1025655A
Authority
GB
United Kingdom
Prior art keywords
metal
sintered
sintering
vapour pressure
pressure
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
GB8360/63A
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.)
Bendix Corp
Original Assignee
Bendix Corp
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 Bendix Corp filed Critical Bendix Corp
Publication of GB1025655A publication Critical patent/GB1025655A/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
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/1003—Use of special medium during sintering, e.g. sintering aid
    • B22F3/1007—Atmosphere
    • 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
    • C22C1/10—Alloys containing non-metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
    • C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
    • C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents

Abstract

In a process of vacuum sintering a metal powder such as Cr, a material such as a ceramic e.g. MgO, which has a lower vapour pressure than the metal and forms a porous coating on the metal during sintering, is added to the metal and the mixture is vacuum sintered at a pressure which is lower than the vapour pressure of the metal and high than the vapour pressure of the additive at the sintering temperature. Other metals which may be sintered are Mn, Ag, Al, Be, Fe, Cu, Ni, Au, Ti, V, Zr, Pt, Re, Mo, Nb, Ta and W and other materials added may be SiO2, B, Si, Al2O3, ZrO2, BeO ThO2, C. Alloying may also be effected during sintering and in the example 6% MgO and 0.5% Ti are added to Cr powder and sintered. The powders are all -325 mesh (20-40 microns) and in general the absolute pressure of sintering is 0.1 to 0.001 of the vapour pressure of the material being sintered The sintered body may be hot pressed to increase the density.
GB8360/63A 1962-03-23 1963-03-01 Sintering method Expired GB1025655A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US182073A US3264102A (en) 1962-03-23 1962-03-23 Method of sintering

Publications (1)

Publication Number Publication Date
GB1025655A true GB1025655A (en) 1966-04-14

Family

ID=22666959

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8360/63A Expired GB1025655A (en) 1962-03-23 1963-03-01 Sintering method

Country Status (2)

Country Link
US (1) US3264102A (en)
GB (1) GB1025655A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090068055A1 (en) * 2007-09-07 2009-03-12 Bloom Energy Corporation Processing of powders of a refractory metal based alloy for high densification

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2698990A (en) * 1950-01-25 1955-01-11 Union Carbide & Carbon Corp Chromium-alumina metal ceramics
US3102044A (en) * 1960-09-12 1963-08-27 United Aircraft Corp Applying protective coating from powdered material utilizing high temperature and low pressure

Also Published As

Publication number Publication date
US3264102A (en) 1966-08-02

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