Tin-containing iron base powder and process for making

PCT No. PCT/JP84/00278 Sec. 371 Date Feb. 1, 1985 Sec. 102(e) Date Feb. 1, 1985 PCT Filed Jun. 1, 1984 PCT Pub. No. WO84/04712 PCT Pub. Date Dec. 6, 1984.The invention provides a tin-containing iron base powder comprising iron base particulates each having tin-rich portions on the surface in which a...

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Bibliographic Details
Main Author TAKAJO; SHIGEAKI
Format Patent
LanguageEnglish
Published 25.04.1989
Edition4
Subjects
ALLOYS
BASIC ELECTRIC ELEMENTS
CASTING
CHEMISTRY
ELECTRICITY
FERROUS OR NON-FERROUS ALLOYS
INDUCTANCES
MAGNETS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WORKING METALLIC POWDER
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Summary:PCT No. PCT/JP84/00278 Sec. 371 Date Feb. 1, 1985 Sec. 102(e) Date Feb. 1, 1985 PCT Filed Jun. 1, 1984 PCT Pub. No. WO84/04712 PCT Pub. Date Dec. 6, 1984.The invention provides a tin-containing iron base powder comprising iron base particulates each having tin-rich portions on the surface in which at least a part of the tin forms a compound with iron, wherein the total tin content ranges from 1 to 20% by weight of the powder. The invention also provides a process for making such a tin-containing iron base powder by mixing an iron base powder with a powder tin compound capable of generating metallic tin upon thermal decomposition, and heating the mixture to a temperature of 450 DEG to 700 DEG C. in a reducing or non-oxidizing atmosphere. Using this tin-containing iron base powder as a sintering material, there can be obtained sintered products having a high density and excellent magnetic properties.
Bibliography:Application Number: US19870070144