GB645541A - Metallurgical processes for producing materials or articles of platinum or allied metals, or their alloys, and materials or articles made by or from the products of suchprocesses - Google Patents

Metallurgical processes for producing materials or articles of platinum or allied metals, or their alloys, and materials or articles made by or from the products of suchprocesses

Info

Publication number
GB645541A
GB645541A GB1570543A GB1570543A GB645541A GB 645541 A GB645541 A GB 645541A GB 1570543 A GB1570543 A GB 1570543A GB 1570543 A GB1570543 A GB 1570543A GB 645541 A GB645541 A GB 645541A
Authority
GB
United Kingdom
Prior art keywords
per cent
platinum
materials
alloys
articles
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
GB1570543A
Inventor
Colin James Smithells
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.)
BAKER PLATINUM Ltd
Original Assignee
BAKER PLATINUM 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 BAKER PLATINUM Ltd filed Critical BAKER PLATINUM Ltd
Priority to GB1570543A priority Critical patent/GB645541A/en
Publication of GB645541A publication Critical patent/GB645541A/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
    • 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
    • C22C32/0021—Matrix based on noble metals, Cu or alloys thereof
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Powder Metallurgy (AREA)
  • Conductive Materials (AREA)

Abstract

A metallurgical process consists in agglomerating by pressing and sintering metals of the platinum class with or without alloying ingredients in amounts yielding cold-working alloys with one or more alkaline earth oxides, namely, oxides of calcium, barium, strontium, magnesium and beryllium, the quantity of which oxide is not greater than 10 per cent by weight of the metal, all ingredients being in a finely divided condition, the sintered body being subsequently swaged, rolled, drawn or otherwise treated to bring it into the form of a wire or sheet suitable for use in the production of desired articles. A minor part of the alkaline oxide constituent may be replaced by one or more other oxides which are stable at the sintering temperature whether or not sintering is carried out in the presence of hydrogen or other reducing gas. The following binary alloys may be used, namely, platinum alloyed with up to 30 per cent of rhodium, iridium or palladium, or with up to 8 per cent of tungsten, up to 15 per cent of gold or ruthenium, up to 8 per cent of molybdenum, up to 8 per cent of manganese, up to 15 per cent of cobalt or up to 15 per cent of nickel. In an example, 100 c.cs. of distilled water containing 90 grammes of platinum in the form of a suspension of ammonium chloroplatinate, 50 c.cs. of a solution containing 10 grammes of rhodium in the form of ammonium hexachlororhodate and 10 c.cs. of a solution containing 0.25 grammes of calcium oxide in the form of calcium acetate are mixed, made up to 200 c.cs. wth distilled water, evaporated to dryness and heated slowly to 350 DEG C to decompose the salts to metal and calcium oxide which decomposition is completed at about 600 DEG C. The product is crushed, heated in a stream of hydrogen at about 850 DEG C, pressed in a steel mould at about 30 tons/square inch, sintered in hydrogen at about 1400 DEG C-1500 DEG C and treated to bring it to wire or sheet form. A further example is given of the production, in a similar manner of a composition containing platinum, tungsten and magnesia. The product may be used as sparking plug electrodes, thermo-couples, electric-furnace heating elements or wire gauze catalysts.
GB1570543A 1943-09-24 1943-09-24 Metallurgical processes for producing materials or articles of platinum or allied metals, or their alloys, and materials or articles made by or from the products of suchprocesses Expired GB645541A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1570543A GB645541A (en) 1943-09-24 1943-09-24 Metallurgical processes for producing materials or articles of platinum or allied metals, or their alloys, and materials or articles made by or from the products of suchprocesses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1570543A GB645541A (en) 1943-09-24 1943-09-24 Metallurgical processes for producing materials or articles of platinum or allied metals, or their alloys, and materials or articles made by or from the products of suchprocesses

Publications (1)

Publication Number Publication Date
GB645541A true GB645541A (en) 1950-11-01

Family

ID=10063991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1570543A Expired GB645541A (en) 1943-09-24 1943-09-24 Metallurgical processes for producing materials or articles of platinum or allied metals, or their alloys, and materials or articles made by or from the products of suchprocesses

Country Status (1)

Country Link
GB (1) GB645541A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166417A (en) * 1962-05-07 1965-01-19 Int Nickel Co Platinum-group metal sheet
US3201236A (en) * 1962-08-24 1965-08-17 Engelhard Ind Inc Method of making metal bodies incorporated with non-metallic refractory material andproduct thereof
EP0683240A2 (en) * 1994-05-19 1995-11-22 Schott Glaswerke Process for preparing Yltrium oxide dispersion hardened pure platinum material, workpieces and plates

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166417A (en) * 1962-05-07 1965-01-19 Int Nickel Co Platinum-group metal sheet
US3201236A (en) * 1962-08-24 1965-08-17 Engelhard Ind Inc Method of making metal bodies incorporated with non-metallic refractory material andproduct thereof
EP0683240A2 (en) * 1994-05-19 1995-11-22 Schott Glaswerke Process for preparing Yltrium oxide dispersion hardened pure platinum material, workpieces and plates
EP0683240A3 (en) * 1994-05-19 1997-12-17 Schott Glaswerke Process for preparing Yltrium oxide dispersion hardened pure platinum material, workpieces and plates

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