ALUMINUM COMPOSITE MATERIAL LOW IN COEFFICIENT OF THERMAL EXPANSION

PROBLEM TO BE SOLVED: To produce a lightweight Al composite body small in the coefficient of thermal expansion by mixing Si-Al alloy powder having a specified compsn. and Cu powder at a specified ratio and subjecting to compacting by hot press or the like. SOLUTION: Si-Al allay powder of <=590μm...

Full description

Saved in:
Bibliographic Details
Main Authors YOSHINO SHOICHI, OSADA KAZUO, TANI TOSHIO, KOYANAGI HISASHI
Format Patent
LanguageEnglish
Published 25.03.1997
Edition6
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To produce a lightweight Al composite body small in the coefficient of thermal expansion by mixing Si-Al alloy powder having a specified compsn. and Cu powder at a specified ratio and subjecting to compacting by hot press or the like. SOLUTION: Si-Al allay powder of <=590μm having a compsn. composed of, by weight, 50 to 90% Si, and the balance Al is mixed with Cu powder in which the coefficient of thermal expansion is lower than that of Al to prepare a powdery mixture composed of Si-Al alloy powder composed of 5 to 50% Cu powder, and the balance Si-Al allay powder. This powdery mixture is subjected to hot working by a method such as hot press to produce a compacted body, from which the lightweight composite material low in the coefficient of thermal expansion is produced.
Bibliography:Application Number: JP19950262091