GB1141576A - Production of chromium alloys - Google Patents

Production of chromium alloys

Info

Publication number
GB1141576A
GB1141576A GB50140/67A GB5014067A GB1141576A GB 1141576 A GB1141576 A GB 1141576A GB 50140/67 A GB50140/67 A GB 50140/67A GB 5014067 A GB5014067 A GB 5014067A GB 1141576 A GB1141576 A GB 1141576A
Authority
GB
United Kingdom
Prior art keywords
mixture
powder
sintering
nov
excess
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
GB50140/67A
Inventor
Harold Hilton Honaker
James Custer Judd
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.)
Henry Wiggin and Co Ltd
Original Assignee
Henry Wiggin and Co 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 Henry Wiggin and Co Ltd filed Critical Henry Wiggin and Co Ltd
Publication of GB1141576A publication Critical patent/GB1141576A/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
    • C22C1/0433—Nickel- or cobalt-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
    • B22F3/001—Starting from powder comprising reducible metal compounds
    • 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
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%

Abstract

1,141,576. Powder metallurgy; nickel alloy. HENRY WIGGIN & CO. Ltd. Nov. 3, 1967 [Nov.14, 1966], No. 50140/67. Headings C7A and C7D. A sintered alloy consisting of or having a base of Cr and at least one of Fe, Co or Ni is formed by compacting a powder mixture of the metals containing carbon in excess of the stoichiometric amount to combine with the oxygen present as chromium oxide and also containing a particulate pore former such as an ammonium halide and sintering in a reducing gas such as H 2 or cracked NH 3 at a minimum of 1040‹C. The sintered compact is hot rolled or extruded. The powder mixture should have a particle size less than 40 microns and may consist of 5-60% Cr, 0-90% Ni, 0-90% Fe, 0-20% Co, 0-5% Nb, 0-4% Cu, 0-20% Mo and 0-10% W. If Al, Ti, Si or Mn is required then these are added as the powders coated with Ni, Fe or Co. The carbon is added 20-100% in excess of the stoichiometric amount required and preferably 0À1-0À8% of the mixture. It may be in the form of powder 0À5-50 micron or as a hydrocarbon or carbolydrate. The pore former content is 0À01- 0À5% of the mixture and compaction is preferably hydrostatic. Sintering is carried out at 1095‹ - 1260‹C. for at least 4 hours to form a sintered body with a porosity of 15-25%. The following alloy is Specified: 77% Ni, 7% Fe, 16% Cr.
GB50140/67A 1966-11-14 1967-11-03 Production of chromium alloys Expired GB1141576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US594012A US3357826A (en) 1966-11-14 1966-11-14 Powder metallurgical production of chromium-containing alloys

Publications (1)

Publication Number Publication Date
GB1141576A true GB1141576A (en) 1969-01-29

Family

ID=24377154

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50140/67A Expired GB1141576A (en) 1966-11-14 1967-11-03 Production of chromium alloys

Country Status (7)

Country Link
US (1) US3357826A (en)
AT (1) AT279191B (en)
BE (1) BE706484A (en)
CH (1) CH504534A (en)
DE (1) DE1558719A1 (en)
GB (1) GB1141576A (en)
SE (1) SE324062B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3460940A (en) * 1967-03-09 1969-08-12 Charles Robert Talmage Method of producing wrought high purity steels by powder metallurgy
US3463679A (en) * 1967-07-24 1969-08-26 Nasa Process for producing dispersion strengthened nickel with aluminum
US3495958A (en) * 1969-03-06 1970-02-17 Charles Robert Talmage High purity steel by powder metallurgy
DE2822956C2 (en) * 1977-05-27 1983-04-14 Mitsubishi Denki K.K., Tokyo Process for the production of switching contacts for a vacuum switch
US4239557A (en) * 1978-01-11 1980-12-16 Gould Inc. Thermally stable sintered porous metal articles
JPS5619832A (en) * 1979-07-27 1981-02-24 Mitsubishi Electric Corp Vacuum breaker contact
US4693863A (en) * 1986-04-09 1987-09-15 Carpenter Technology Corporation Process and apparatus to simultaneously consolidate and reduce metal powders
US4722826A (en) * 1986-09-15 1988-02-02 Inco Alloys International, Inc. Production of water atomized powder metallurgy products
DK58196A (en) * 1996-05-15 1997-11-16 Man B & W Diesel Gmbh Hanging in a combustion chamber in an incinerator

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656595A (en) * 1953-10-27 Chromium-alloyed corrosion-resist
DE583869C (en) * 1929-02-23 1933-09-11 I G Farbenindustrie Akt Ges Process for the production of electrodes for accumulators by pressure and / or heat treatment of metal powders expediently obtained from metal carbonyl
GB468518A (en) * 1935-01-22 1937-07-07 Accumulatoren Fabri Ag Method of producing porous metal bodies
US2122053A (en) * 1935-01-22 1938-06-28 Accumulatoren Fabrik Ag Process of manufacturing porous metallic bodies
US2471630A (en) * 1944-01-13 1949-05-31 Callite Tungsten Corp Pressed and sintered oxidation resistant nickel alloys
US2441126A (en) * 1944-01-13 1948-05-11 Callite Tungsten Corp Oxidation resistant alloys
US2397831A (en) * 1944-05-15 1946-04-02 Harry T Bellamy Production of molded metallic articles
US2470790A (en) * 1945-04-24 1949-05-24 Westinghouse Electric Corp Manufacture of alloys
US2657127A (en) * 1950-03-31 1953-10-27 American Electro Metal Corp Production of chromium-alloyed corrosion-resistant metal powders and related products
US2806786A (en) * 1954-05-14 1957-09-17 Gen Electric Method of making sintered electrical contact material
US2872725A (en) * 1954-05-27 1959-02-10 Gen Electric Chromium base refractory compositions
US2827407A (en) * 1954-06-15 1958-03-18 Federal Mogul Corp Method of producing powdered steel products
FR1261401A (en) * 1960-04-08 1961-05-19 Csf Method of manufacturing an element of sintered material permeable to gas and element thus obtained

Also Published As

Publication number Publication date
US3357826A (en) 1967-12-12
BE706484A (en) 1968-05-14
DE1558719A1 (en) 1970-04-23
AT279191B (en) 1970-02-25
SE324062B (en) 1970-05-19
CH504534A (en) 1971-03-15

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