GB645681A - Metallurgical processes for producing materials or articles of platinum or allied metals, or their alloys, and materials or articles produced by or from the products of such processes - Google Patents

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

Info

Publication number
GB645681A
GB645681A GB1570643A GB1570643A GB645681A GB 645681 A GB645681 A GB 645681A GB 1570643 A GB1570643 A GB 1570643A GB 1570643 A GB1570643 A GB 1570643A GB 645681 A GB645681 A GB 645681A
Authority
GB
United Kingdom
Prior art keywords
platinum
per cent
oxide
articles
processes
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
GB1570643A
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 GB1570643A priority Critical patent/GB645681A/en
Publication of GB645681A publication Critical patent/GB645681A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/023—Composite material having a noble metal as the basic material
    • H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
    • 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)
  • Composite Materials (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Powder Metallurgy (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 of the following oxides, namely zirconia, hafnia, ceric oxide and titanium dioxide, the quantity of which oxide is not greater than 10 per cent by weight of the metal, all the 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 said oxide content 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 molybdenum, manganese or tungsten, or up to 15 per cent of ruthenium, gold, cobalt or nickel. In an example 100 c.c.s. of distilled water containing 90 grammes of platinum in the form of a suspension of ammonium chloroplatinate, 50 c.c.s. of a solution containing 10 grammes of rhodium as ammonium hexachlororhodate and 10 c.cs. of a solution containing 0.2 grammes of zirconium oxide in the form of zirconium nitrate are mixed, made up to 200 c.c.s. with distilled water, evaporated to dryness and heated slowly to about 350 DEG C to decompose the salts to metal and zirconium oxide, the decomposition being completed at about 600 DEG C. The product is crushed, heated in a stream of hydrogen at about 850 DEG C, sieved, pressed in a steel mould under a pressure of about 30 tons per square inch, sintered in hydrogen at about 1400-1500 DEG C and treated mechanically to bring it to the desired form such as wire or sheet. The product may be used as sparking plug electrodes, thermocouples, electric-furnace heating elements or wire gauze catalysts.
GB1570643A 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 produced by or from the products of such processes Expired GB645681A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1570643A GB645681A (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 produced by or from the products of such processes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1570643A GB645681A (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 produced by or from the products of such processes

Publications (1)

Publication Number Publication Date
GB645681A true GB645681A (en) 1950-11-08

Family

ID=10064007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1570643A Expired GB645681A (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 produced by or from the products of such processes

Country Status (1)

Country Link
GB (1) GB645681A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783530A (en) * 1954-05-19 1957-03-05 Union Carbide & Carbon Corp Metal ceramic product
US2841862A (en) * 1954-05-27 1958-07-08 Gen Electric Chromium and titanium oxide refractory compositions
US2872725A (en) * 1954-05-27 1959-02-10 Gen Electric Chromium base refractory compositions
US3070468A (en) * 1958-10-29 1962-12-25 Nicholas J Grant Method of producing dispersion hardened titanium alloys
US3709667A (en) * 1971-01-19 1973-01-09 Johnson Matthey Co Ltd Dispersion strengthening of platinum group metals and alloys
FR2323218A1 (en) * 1975-09-05 1977-04-01 Engelhard Min & Chem ELECTRICAL CONTACTS IN GOLD REINFORCED BY A DISPERSE PHASE
GB2279967A (en) * 1993-07-14 1995-01-18 Nagahori Kk Platinum alloy
GB2299813A (en) * 1995-04-08 1996-10-16 Ford Motor Co Spark plug electrode
EP1295954A4 (en) * 2000-06-28 2003-03-26 Tanaka Precious Metal Ind Platinum material reinforced by oxide dispersion and process for producing the same
EP1295953A4 (en) * 2000-06-28 2003-03-26 Tanaka Precious Metal Ind Method for producing platinum material reinforced with dispersed oxide
WO2007041431A1 (en) * 2005-10-03 2007-04-12 Analog Devices, Inc. Mems switch contact system
US7968364B2 (en) 2005-10-03 2011-06-28 Analog Devices, Inc. MEMS switch capping and passivation method
US8194382B2 (en) 2006-12-22 2012-06-05 Analog Devices, Inc. Method and apparatus for driving a switch

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783530A (en) * 1954-05-19 1957-03-05 Union Carbide & Carbon Corp Metal ceramic product
US2841862A (en) * 1954-05-27 1958-07-08 Gen Electric Chromium and titanium oxide refractory compositions
US2872725A (en) * 1954-05-27 1959-02-10 Gen Electric Chromium base refractory compositions
US3070468A (en) * 1958-10-29 1962-12-25 Nicholas J Grant Method of producing dispersion hardened titanium alloys
US3709667A (en) * 1971-01-19 1973-01-09 Johnson Matthey Co Ltd Dispersion strengthening of platinum group metals and alloys
FR2323218A1 (en) * 1975-09-05 1977-04-01 Engelhard Min & Chem ELECTRICAL CONTACTS IN GOLD REINFORCED BY A DISPERSE PHASE
GB2279967A (en) * 1993-07-14 1995-01-18 Nagahori Kk Platinum alloy
GB2299813A (en) * 1995-04-08 1996-10-16 Ford Motor Co Spark plug electrode
EP1295954A4 (en) * 2000-06-28 2003-03-26 Tanaka Precious Metal Ind Platinum material reinforced by oxide dispersion and process for producing the same
EP1295953A4 (en) * 2000-06-28 2003-03-26 Tanaka Precious Metal Ind Method for producing platinum material reinforced with dispersed oxide
EP1295953A1 (en) * 2000-06-28 2003-03-26 Tanaka Kikinzoku Kogyo Kabushiki Kaisha Method for producing platinum material reinforced with dispersed oxide
EP1295954A1 (en) * 2000-06-28 2003-03-26 Tanaka Kikinzoku Kogyo K.K. Platinum material reinforced by oxide dispersion and process for producing the same
WO2007041431A1 (en) * 2005-10-03 2007-04-12 Analog Devices, Inc. Mems switch contact system
US7968364B2 (en) 2005-10-03 2011-06-28 Analog Devices, Inc. MEMS switch capping and passivation method
US8194382B2 (en) 2006-12-22 2012-06-05 Analog Devices, Inc. Method and apparatus for driving a switch

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