GB1102025A - Production of sintered metal bodies - Google Patents

Production of sintered metal bodies

Info

Publication number
GB1102025A
GB1102025A GB1197865A GB1197865A GB1102025A GB 1102025 A GB1102025 A GB 1102025A GB 1197865 A GB1197865 A GB 1197865A GB 1197865 A GB1197865 A GB 1197865A GB 1102025 A GB1102025 A GB 1102025A
Authority
GB
United Kingdom
Prior art keywords
anode
powder mixture
sintered
alloys
anodized
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
GB1197865A
Inventor
Thaddeus Leonard Kolski
Harry Wilson Ling
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to GB1197865A priority Critical patent/GB1102025A/en
Publication of GB1102025A publication Critical patent/GB1102025A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
    • B22F3/1134—Inorganic fillers

Abstract

In a process for producing porous sintered bodies consisting e.g. capacitor anodes, essentially of Ta, Nb or Ta-Nb alloys, a powder mixture of a) at least one of Ta, Nb or Ta-Nb alloys and b) a more volatile metal selected from Ti, V or Ti-V alloys is compacted and heated in the range from 1600 DEG C. to within 200 DEG C. of the melting temperature of component a) and continuing the heating until at least 80% by weight of component b) has vaporized and been removed. The powder mixture contains 5-90% by weight of component b) and the powder particle size is less than 50 mesh (U.S.), preferably minus 100 plus 200 mesh. The heating may be effected under vacuum or under a stream of argon. The mixture may alternatively be hot pressed. The powder mixture is formed by melting the metals together, hydriding the ingot, grinding and dehydriding or by coprecipitation 1% of stearic acid is added as a binder. The powder mixture may be compacted around a Nb wire which acts as a connector when the body is used as a capacitor anode. The sintered body is anodized in 0.1% H3PO4 at 200 volts. The anodized sintered anode may be impregnated with Mn(No3)2, heated, and re-anodized.ALSO:A sintered porous anode of N6-Ti is anodised, impregnated with Mn(NO3)2 and heated to form a coating of MnO2. The anode was then re-anodised and coated with graphite by dipping in a colloidal graphite slurry containing 7% solids. An electrically conducting coating of epoxy resin was then applied and a copper cathode connector wire was imbedded in the coating.
GB1197865A 1965-03-22 1965-03-22 Production of sintered metal bodies Expired GB1102025A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1197865A GB1102025A (en) 1965-03-22 1965-03-22 Production of sintered metal bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1197865A GB1102025A (en) 1965-03-22 1965-03-22 Production of sintered metal bodies

Publications (1)

Publication Number Publication Date
GB1102025A true GB1102025A (en) 1968-02-07

Family

ID=9996164

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1197865A Expired GB1102025A (en) 1965-03-22 1965-03-22 Production of sintered metal bodies

Country Status (1)

Country Link
GB (1) GB1102025A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1201337A1 (en) * 2000-10-24 2002-05-02 Future Metal Co., Ltd. Method for making porous metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1201337A1 (en) * 2000-10-24 2002-05-02 Future Metal Co., Ltd. Method for making porous metals

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