GB611813A - Improvements in and relating to the production of metal-metal oxide compositions or alloys - Google Patents

Improvements in and relating to the production of metal-metal oxide compositions or alloys

Info

Publication number
GB611813A
GB611813A GB14018/46A GB1401846A GB611813A GB 611813 A GB611813 A GB 611813A GB 14018/46 A GB14018/46 A GB 14018/46A GB 1401846 A GB1401846 A GB 1401846A GB 611813 A GB611813 A GB 611813A
Authority
GB
United Kingdom
Prior art keywords
metal
metals
composition
alloy
silver
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
GB14018/46A
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.)
Mallory Metallurgical Products Ltd
Original Assignee
Mallory Metallurgical Products 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 Mallory Metallurgical Products Ltd filed Critical Mallory Metallurgical Products Ltd
Publication of GB611813A publication Critical patent/GB611813A/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
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1078—Alloys containing non-metals by internal oxidation of material in solid state
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising

Landscapes

  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Operated Clutches (AREA)
  • Sliding-Contact Bearings (AREA)
  • Powder Metallurgy (AREA)

Abstract

A method of forming a metal-metal oxide composition or alloy suitable for use as an electrical contact material, a bearing or bearing material, a brake lining or a clutch facing which comprises internally oxidizing the oxidizable metal or metals of a metal-metal oxide composition or alloy of which at least one metal has a high diffusion rate for oxygen without forming a stable oxide or oxides and the other metal or metals has or have a high affinity for oxygen and a tendency to form stable oxides, the first-mentioned metal or metals remaining unoxidized and unaffected. The oxidizable metal or metals may have low-melting points, the unoxodizable metal having a relatively high melting-point, the body being heated to melt the low melting point metal or metals and an agent capable of oxidizing the low melting point metals is dispersed in the body under ambient pressure sufficient to prevent boiling off of the said low melting point metal or metals. The composition or alloy may be subjected to heat and to an oxidizing agent so as to diffuse the said oxidizing agent through the composition. The relative distribution of the metals is preferably not affected by the treatment. The composition may comprise a silver base alloy, e.g., silver-cadmium or silver-lead or an alloy of gold, palladium or platinum group metal and cadmium, lead, thallium or copper or a silver-thorium or silver-beryllium alloy. In the manufacture of a composition having high secondary emission the invention is applied to a silver base composition containing material consisting of one or more of magnesium, calcium, strontium, barium, thorium, uranium, titanium and zirconium.
GB14018/46A 1945-07-28 1946-05-09 Improvements in and relating to the production of metal-metal oxide compositions or alloys Expired GB611813A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US611813XA 1945-07-28 1945-07-28

Publications (1)

Publication Number Publication Date
GB611813A true GB611813A (en) 1948-11-04

Family

ID=22034155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14018/46A Expired GB611813A (en) 1945-07-28 1946-05-09 Improvements in and relating to the production of metal-metal oxide compositions or alloys

Country Status (1)

Country Link
GB (1) GB611813A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636819A (en) * 1951-01-31 1953-04-28 Baker & Co Inc Grain stabilizing metals and alloys
US3114631A (en) * 1960-08-24 1963-12-17 Handy & Harman Silver composition
US3135601A (en) * 1961-11-16 1964-06-02 Martin Marietta Corp Alumina-silver alloy
US3509694A (en) * 1964-05-16 1970-05-05 Yunoshin Imai Process and apparatus for selectively permeating oxygen
US3933485A (en) * 1973-07-20 1976-01-20 Chugai Denki Kogyo Kabushiki-Kaisha Electrical contact material
US4462841A (en) * 1982-04-23 1984-07-31 Mitsubishi Kinzoku Kabushiki Kaisha Silver-metal oxide alloy electrical contact materials
US4826808A (en) * 1987-03-27 1989-05-02 Massachusetts Institute Of Technology Preparation of superconducting oxides and oxide-metal composites
EP0437917A2 (en) * 1990-01-19 1991-07-24 Chugai Denki Kogyo Kabushiki Kaisha Internal-oxidation method for production of electrical contact materials
US5189009A (en) * 1987-03-27 1993-02-23 Massachusetts Institute Of Technology Preparation of superconducting oxides and oxide-metal composites
US5204318A (en) * 1987-03-27 1993-04-20 Massachusetts Institute Of Technology Preparation of superconducting oxides and oxide-metal composites

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636819A (en) * 1951-01-31 1953-04-28 Baker & Co Inc Grain stabilizing metals and alloys
US3114631A (en) * 1960-08-24 1963-12-17 Handy & Harman Silver composition
US3135601A (en) * 1961-11-16 1964-06-02 Martin Marietta Corp Alumina-silver alloy
US3509694A (en) * 1964-05-16 1970-05-05 Yunoshin Imai Process and apparatus for selectively permeating oxygen
US3933485A (en) * 1973-07-20 1976-01-20 Chugai Denki Kogyo Kabushiki-Kaisha Electrical contact material
US4462841A (en) * 1982-04-23 1984-07-31 Mitsubishi Kinzoku Kabushiki Kaisha Silver-metal oxide alloy electrical contact materials
US4826808A (en) * 1987-03-27 1989-05-02 Massachusetts Institute Of Technology Preparation of superconducting oxides and oxide-metal composites
US5189009A (en) * 1987-03-27 1993-02-23 Massachusetts Institute Of Technology Preparation of superconducting oxides and oxide-metal composites
US5204318A (en) * 1987-03-27 1993-04-20 Massachusetts Institute Of Technology Preparation of superconducting oxides and oxide-metal composites
US5439880A (en) * 1987-03-27 1995-08-08 Massachusetts Institute Of Technology Preparation of superconducting oxides by oxidizing a metallic alloy
US5545613A (en) * 1987-03-27 1996-08-13 Massachusetts Institute Of Technology Preparation of superconducting oxides and oxide-metal composites
US5643856A (en) * 1987-03-27 1997-07-01 Massachusetts Institute Of Technology Preparartion of superconducting oxides and oxide-metal composites
US5883052A (en) * 1987-03-27 1999-03-16 Massachusetts Institute Of Technology Preparation of superconducting oxides and oxide-metal composites
EP0437917A2 (en) * 1990-01-19 1991-07-24 Chugai Denki Kogyo Kabushiki Kaisha Internal-oxidation method for production of electrical contact materials
EP0437917A3 (en) * 1990-01-19 1992-04-22 Chugai Denki Kogyo Kabushiki Kaisha Internal-oxidation method for production of electrical contact materials

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