Title:
FeSi2系熱電変換素子用原料粉末の製造方法
Document Type and Number:
Japanese Patent JP3579186
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To restrain oxidation of material alloy powder and enable inexpensive manufacture of material fine powder, by roughly crushing a dissolution ingot of iron silicon containing a specified quantity of silicon in an inert gas atmosphere, then carrying out jet mill crushing using an inert gas, and adding and mixing a specified quantity of transition metal powder. SOLUTION: After a dissolution ingot of iron silicon containing 50% by weight or more of silicon is roughly crushed in an inert gas atmosphere, jet mill crushing is carried out using an inert gas. Then, transition metal powder is added and mixed at an atomic ratio of the powder transition metal element to silicon being 1:2. For example, in addition to a mixing method using a V- cone, a method for stirring in an inert gas atmosphere using a universal mixer, a planetary mixer or a speed mixer is effective. In addition, in order to improve the fluidity of the powder at the time of press molding, reduce the simplex unevenness, and improve the dimensional accuracy and sintering density, it is effective to form grains by a spray drier unit.
Inventors:
Osamu Yamashita
Akira Makita
Masami Ueda
Nobuhiro Sadatomi
Akira Makita
Masami Ueda
Nobuhiro Sadatomi
Application Number:
JP17863696A
Publication Date:
October 20, 2004
Filing Date:
June 18, 1996
Export Citation:
Assignee:
Neomax corporation
International Classes:
B22F9/08; H01L35/14; H01L35/34; (IPC1-7): H01L35/14; B22F9/08; H01L35/34
Attorney, Agent or Firm:
Shigenobu Ikejo
Yoshiteru Oshida
Yoshiteru Oshida