Hitachi Metals, Ltd.

Takeo Mizuguchi

Tsutomu Inui

Rokuo Ichiyasu

Hidemi Takao

Shun-ichiro Matsumoto

Makoto Ishihara

Tetsunori Hayafuji

A Fe--Ni based alloy sheet having superior surface characteristic and superior etchability, essentially consisting, by weight, of 30 to 50% nickel, 0.05 to 0.5% manganese, 0.001 to 0.02% silicon, not more than 0.0015% aluminum, not more than 150 ppm oxygen, and the balance iron and incidental impurities, the value of Mn content(weight %)/Si content (weight %) being not less than 20. Preferably, silicon content is 0.001 to 0.01%, aluminum being not more than 0.0005%, oxygen being not more than 90 ppm, sulfur which is one of important impurities being not more than 0.005%, and boron which is one of important impurities being not more than 0.005%.

Fe-Ni based alloy sheet having superior surface characteristic and

A sintered target member consisting essentially of 50-75 weight % of Co, 3-12 weight % of Cr and balance substantially Ni, which has a structure comprising dispersion phases consisting essentially of one or more elements constituting the target member and having a maximum permeability of 50 or less. This target member is produced by mixing metal or alloy powders corresponding to low-permeability dispersion phases, charging the resulting mixture into a metal container; sealing the metal container under reduced pressure; sintering it at a temperature of 900.degree.-1300.degree. C. and pressure of 500 atm or more; and removing the metal container from the resulting sintered body.

Sintered target member and method of producing same

Growing community of inventors

Yasugi, Japan

Takeo Mizuguchi