公开(公告)号：JPH10251707A

公开(公告)日：1998-09-22

申请号：JP7078497

申请日：1997-03-07

Applicant: AGENCY IND SCIENCE TECHN

Inventor： KATO KIYOTAKA ,  MATSUMOTO AKIHIRO

IPC: C04B35/64 ,  B22F3/10 ,  C22C1/04

Abstract: PROBLEM TO BE SOLVED: To prevent the infiltration of carbon from a furnace body and an exothermic body to the utmost, at the time of sintering Ti in a vacuum sintering furnace where carbon is used for a furnace body and an exothermic body, and to provide a method of production of a Ti sintered compact free from formation of a carbide at the surface of the sintered compact and excellent in mechanical properties. SOLUTION: A green compact 3, composed of fine Ti powder of Torr at

公开(公告)号：JP2000277815A

公开(公告)日：2000-10-06

申请号：JP8275999

申请日：1999-03-26

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SUGIYAMA AKIRA ,  KOBAYASHI KEIZO ,  MATSUMOTO AKIHIRO ,  OZAKI KOYO ,  NISHIO TOSHIYUKI

IPC: H01L35/14 ,  B22F1/00 ,  C22C23/00 ,  C22C47/14 ,  H01L35/34

Abstract: PROBLEM TO BE SOLVED: To obtain a method for dispersing short thin metallic wires in a thermoelectric material composed of a magnesium-silicon compound and a thermoelectric material having superior thermoelectric characteristic. SOLUTION: A magnesium-silicon compound sintered body, in which short and thin metallic wires are uniformly scattered is obtained, in such a way that mixed powder in which the formation of a magnesium-silicon compound is clearly confirmed by X-ray diffraction is manufactured by mechanically alloying magnesium powder, silicon powder, and their inevitable metallic elements at an atomic ratio of 2:1 between magnesium atoms and silicon atoms. Then, after the short and thin metallic wires are mixed in the mixed powder at a rate of 5-30 vol.% with respect to 100 vol.% powder and the powder is dried, the powder is sintered under pressure.

公开(公告)号：JP2000265226A

公开(公告)日：2000-09-26

申请号：JP6957899

申请日：1999-03-16

Applicant: AGENCY IND SCIENCE TECHN

Inventor： KOBAYASHI KEIZO ,  SUGIYAMA AKIRA ,  MATSUMOTO AKIHIRO ,  NISHIO TOSHIYUKI ,  OZAKI KOYO

IPC: B22F3/02 ,  B22F1/00 ,  B22F3/10 ,  B22F9/02 ,  C22C1/04

Abstract: PROBLEM TO BE SOLVED: To provide a technique of manufacturing an alloy powder composed essentially of titanium by a mechanical alloying method in high efficiency and also to provide a solidification and forming technique causing no deterioration in the functional property of the alloy. SOLUTION: In the method for synthesizing an alloy powder containing >=50 atomic % titanium, a magnesium powder in an amount of