GB1101865A - Improvements in or relating to the manufacture of porous metal articles - Google Patents

Improvements in or relating to the manufacture of porous metal articles

Info

Publication number
GB1101865A
GB1101865A GB6792/65A GB679265A GB1101865A GB 1101865 A GB1101865 A GB 1101865A GB 6792/65 A GB6792/65 A GB 6792/65A GB 679265 A GB679265 A GB 679265A GB 1101865 A GB1101865 A GB 1101865A
Authority
GB
United Kingdom
Prior art keywords
sintering
mould
alloy
gas
volume
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
GB6792/65A
Inventor
George Stephen Foerster
Garth Duane Lawrence
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.)
Dow Chemical Co
Original Assignee
Dow 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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1101865A publication Critical patent/GB1101865A/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
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0408—Light metal alloys
    • C22C1/0416—Aluminium-based alloys
    • 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
    • B22F3/11—Making porous workpieces or articles
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/041—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by mechanical alloying, e.g. blending, milling
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)

Abstract

A porous sintered Al alloy body containing at least 57.6% weight Al is made from particles of the alloy free from an oxide film thicker than 700 A by liquid phase sintering the particles in a mould under conditions to form 15-70% weight of a liquid phase. The Al alloy is formed by atomizing a melt in a dry non oxidizing atmosphere e.g. natural gas, argon or air containing < 0.3% volume H2O or a vacuum, or by machining the solidified alloy. The powder is preferably stored under dry conditions e.g. in N2, He or A. The sintering mould is made of a material which does not give off an oxidizing gas during sintering e.g. glass; steel coated with ceramic or porcelain enamel; ceramic; pyrolytic graphite. The sintering atmosphere contains < 0.3% volume H2O and is preferably natural gas, He, A, H2, N2, CH4, C2H5 or mixtures of these or a vacuum. Sintering may be effected in a sealed mould flushed with the required gas or a positive gas pressure is maintained in the mould. If an oxidizing gas is present during sintering the mould size is selected so that there is < 40% volume of free headspace above the charge. Alternatively a getter such as Mg may be used during the sintering. Prior to placing in the sintering mould the powder may be compacted to a density of at least 2.16g./cc. at a temperature below 260 DEG C. The Al alloys given contain any of the following: Cu, Mg, Si, Be, B, Fe, Mn, Zr, Li.
GB6792/65A 1964-02-19 1965-02-17 Improvements in or relating to the manufacture of porous metal articles Expired GB1101865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US345847A US3359095A (en) 1964-02-19 1964-02-19 Sintering of loose particulate aluminum metal

Publications (1)

Publication Number Publication Date
GB1101865A true GB1101865A (en) 1968-01-31

Family

ID=23356730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6792/65A Expired GB1101865A (en) 1964-02-19 1965-02-17 Improvements in or relating to the manufacture of porous metal articles

Country Status (3)

Country Link
US (1) US3359095A (en)
DE (1) DE1483688B2 (en)
GB (1) GB1101865A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416520A1 (en) * 1978-02-02 1979-08-31 Nippon Dia Clevite Co Porous sintered aluminium (alloy) body - produced by liq. phase sintering of different aluminium alloy powders
EP0388026A1 (en) * 1989-03-14 1990-09-19 Corning Incorporated Aluminide structures
WO1999029281A2 (en) * 1997-12-04 1999-06-17 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. Method for producing dental castings
GB2451761A (en) * 2007-08-08 2009-02-11 Iain Bridge Porous body

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990006828A1 (en) * 1988-12-14 1990-06-28 M. Laumen Thermotechnik Gmbh Process for manufacturing mechanically stable, porous, permeable elements from aluminium powder or granules
US5176740A (en) * 1989-12-29 1993-01-05 Showa Denko K.K. Aluminum-alloy powder, sintered aluminum-alloy, and method for producing the sintered aluminum-alloy
JPH04293705A (en) * 1991-03-20 1992-10-19 Akebono Brake Res & Dev Center Ltd Production of disk rotor of aluminum-based composite material
US7517492B2 (en) * 2003-12-01 2009-04-14 The Ex One Company Processes for sintering aluminum and aluminum alloy components
DE102009019041B4 (en) * 2009-04-27 2011-07-07 Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH, 21502 Process for the production of magnesium or magnesium alloy components by sintering
CN107779639A (en) * 2016-08-31 2018-03-09 国研高能（北京）稳态传热传质技术研究院有限公司 A kind of aluminum material of porous sponge structure and preparation method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2287251A (en) * 1939-07-07 1942-06-23 Jones William David Manufacture of nonporous metal articles
GB544833A (en) * 1940-03-07 1942-04-29 Gen Motors Corp Improved method of making porous metal articles
US2293400A (en) * 1941-01-21 1942-08-18 Isthmian Metals Inc Method for producing metal bodies
US2391752A (en) * 1942-05-30 1945-12-25 Stern Max Method for treating aluminum or aluminum alloy scrap
GB626764A (en) * 1946-04-16 1949-07-21 American Electro Metal Corp Improvements in method of producing shaped bodies from powdery aluminium
US2796660A (en) * 1946-07-17 1957-06-25 Aluminium Ind Ag Method for the production of light metal articles
US2809891A (en) * 1954-10-12 1957-10-15 Aluminum Co Of America Method of making articles from aluminous metal powder
US3100933A (en) * 1956-10-15 1963-08-20 Gen Motors Corp Method of cold welding aluminum
US3232754A (en) * 1961-11-07 1966-02-01 Alloys Res & Mfg Corp Porous metallic bodies and fabrication methods therefor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416520A1 (en) * 1978-02-02 1979-08-31 Nippon Dia Clevite Co Porous sintered aluminium (alloy) body - produced by liq. phase sintering of different aluminium alloy powders
EP0388026A1 (en) * 1989-03-14 1990-09-19 Corning Incorporated Aluminide structures
WO1999029281A2 (en) * 1997-12-04 1999-06-17 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. Method for producing dental castings
WO1999029281A3 (en) * 1997-12-04 1999-09-10 Herbst Bremer Goldschlaegerei Method for producing dental castings
GB2451761A (en) * 2007-08-08 2009-02-11 Iain Bridge Porous body

Also Published As

Publication number Publication date
DE1483688A1 (en) 1970-04-30
US3359095A (en) 1967-12-19
DE1483688B2 (en) 1970-04-30

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