GB1348393A - Method of increasing the particle size of transition metal powders - Google Patents

Method of increasing the particle size of transition metal powders

Info

Publication number
GB1348393A
GB1348393A GB4965771A GB4965771A GB1348393A GB 1348393 A GB1348393 A GB 1348393A GB 4965771 A GB4965771 A GB 4965771A GB 4965771 A GB4965771 A GB 4965771A GB 1348393 A GB1348393 A GB 1348393A
Authority
GB
United Kingdom
Prior art keywords
increasing
particle size
transition metal
metal powders
oct
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
GB4965771A
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.)
Rederi Nordstjernan AB
Original Assignee
Rederi Nordstjernan AB
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
Priority claimed from SE14522/70A external-priority patent/SE349016B/xx
Priority claimed from SE15529/70A external-priority patent/SE360844B/xx
Application filed by Rederi Nordstjernan AB filed Critical Rederi Nordstjernan AB
Publication of GB1348393A publication Critical patent/GB1348393A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C23C8/40—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 liquids, e.g. salt baths, liquid suspensions
    • C23C8/42—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 liquids, e.g. salt baths, liquid suspensions only one element being applied
    • C23C8/44—Carburising
    • 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
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
    • C22C1/053—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds
    • C22C1/055—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor with in situ formation of hard compounds using carbon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

1348393 Tungsten carbide REDERI AB NORDSTJERNAN 26 Oct 1971 [28 Oct 1970 17 Nov 1970] 49657/71 Heading C1A [Also in Division C7] Tungsten carbide is prepared by mixing tungsten powder with carbon black and cobalt dichloride powder, and heating in a hydrogen atmosphere at 1600‹ C. to produce larger carbide particles than a cobalt-free mixture; the cobalt dichloride may alternatively be added as a solution in alcohol.
GB4965771A 1970-10-28 1971-10-26 Method of increasing the particle size of transition metal powders Expired GB1348393A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE14522/70A SE349016B (en) 1970-10-28 1970-10-28
SE15529/70A SE360844B (en) 1970-11-17 1970-11-17

Publications (1)

Publication Number Publication Date
GB1348393A true GB1348393A (en) 1974-03-13

Family

ID=26656004

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4965771A Expired GB1348393A (en) 1970-10-28 1971-10-26 Method of increasing the particle size of transition metal powders

Country Status (4)

Country Link
CA (1) CA934994A (en)
DE (1) DE2153626A1 (en)
FR (1) FR2110081A5 (en)
GB (1) GB1348393A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131450A (en) * 1977-02-04 1978-12-26 Mitsubishi Kinzoku Kabushiki Kaisha Process for manufacturing cobalt-base reduced powder

Also Published As

Publication number Publication date
FR2110081A5 (en) 1972-05-26
CA934994A (en) 1973-10-09
DE2153626A1 (en) 1972-05-04

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees