GB902719A - Methods for producing fine metal powders - Google Patents

Methods for producing fine metal powders

Info

Publication number
GB902719A
GB902719A GB1551557A GB1551557A GB902719A GB 902719 A GB902719 A GB 902719A GB 1551557 A GB1551557 A GB 1551557A GB 1551557 A GB1551557 A GB 1551557A GB 902719 A GB902719 A GB 902719A
Authority
GB
United Kingdom
Prior art keywords
metal
vapour
powder
subjecting
methods
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
GB1551557A
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.)
RICHARD JOHN FLETCHER
Original Assignee
RICHARD JOHN FLETCHER
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 RICHARD JOHN FLETCHER filed Critical RICHARD JOHN FLETCHER
Priority to GB1551557A priority Critical patent/GB902719A/en
Publication of GB902719A publication Critical patent/GB902719A/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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/30—Making metallic powder or suspensions thereof using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/12—Making metallic powder or suspensions thereof using physical processes starting from gaseous material

Abstract

Fine metal powder is prepared by a process which includes producing a metal vapour by vacuum evaporation or electrical discharge and subjecting the vapour to such conditions and vacuum or low pressure that it is condensed as a fine powder. The metal vapour may be formed by evaporation of the metal by means of an electrically-heated, heat-resistant filament, boat or crucible, by subjecting the metal in the form of a filament to an electric discharge, or by subjecting the vapour of a compound of the metal to an electrical discharge. In the second method a metal wire and an electrode are included in a charging circuit and the distance between them is reduced until discharge occurs. In the third method vapour of the metal compound, with or without a reducing gas, may be passed through a space between electrodes which are included in a charging circuit. This method, in an example, is applied to the production of titanium powder from a vapour of titanium tetraiodide. The metal may be condensed as powder by passing the vapour into contact with an inert gas at low pressure, or by passing a stream of inert gas into contact with the vapour.
GB1551557A 1957-07-15 1957-07-15 Methods for producing fine metal powders Expired GB902719A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1551557A GB902719A (en) 1957-07-15 1957-07-15 Methods for producing fine metal powders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1551557A GB902719A (en) 1957-07-15 1957-07-15 Methods for producing fine metal powders

Publications (1)

Publication Number Publication Date
GB902719A true GB902719A (en) 1962-08-09

Family

ID=10060489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1551557A Expired GB902719A (en) 1957-07-15 1957-07-15 Methods for producing fine metal powders

Country Status (1)

Country Link
GB (1) GB902719A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100444995C (en) * 2004-07-22 2008-12-24 北京颐鑫安科技发展有限公司 Process for producing superfine aluminium powder and nano grade aluminium powder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100444995C (en) * 2004-07-22 2008-12-24 北京颐鑫安科技发展有限公司 Process for producing superfine aluminium powder and nano grade aluminium powder

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