公开(公告)号：JP2007002302A

公开(公告)日：2007-01-11

申请号：JP2005184120

申请日：2005-06-23

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： ZHANG HONGWANG ,  RAGHAVAN GOPALAN ,  MUKAI TOSHIMOTO ,  HOUNO KAZUHIRO

IPC: C22C38/00 ,  B22F3/105 ,  B22F9/04 ,  C22C37/00

Abstract: PROBLEM TO BE SOLVED: To provide a carbon steel in which high strength and high ductility are balanced. SOLUTION: Each powder of pure iron and carbon or the powder of a carbon steel is subjected to mechanical milling treatment. The obtained powder is subjected to discharge plasma sintering, so as to be a steel having a structure in which the average crystal grain size of a mother phase is COPYRIGHT: (C)2007,JPO&INPIT

公开(公告)号：JP2003099920A

公开(公告)日：2003-04-04

申请号：JP2001288171

申请日：2001-09-21

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： TAKAHASHI YUKIKO ,  ONUMA MASATO ,  HOUNO KAZUHIRO

IPC: C23C14/14 ,  C23C14/34 ,  G11B5/65 ,  G11B5/73 ,  G11B5/738 ,  G11B5/851 ,  H01F10/14 ,  H01F41/18

Abstract: PROBLEM TO BE SOLVED: To obtain an PePt phase of L10 structure regularized immediately after the film is formed without high temperature treatment at a temperature of 600 deg.C or higher after the film is formed and without adding a third element to obtain large coercive force at a low temperature. SOLUTION: The FePt phase of L10 structure regularized right after forming the film is obtained by forming the film by a sputtering method while heating a substrate at a temperature of 200-300 deg.C, and making the regularization advance for the FePt phase by the surface dispersion of atoms occurring on the surface during the film formation.

公开(公告)号：EP2157201A4

公开(公告)日：2014-07-09

申请号：EP08752560

申请日：2008-05-09

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： MENDIS CHAMINI ,  OISHI KEIICHIRO ,  HOUNO KAZUHIRO ,  KAWAMURA YOSHIAKI ,  KAMADO SHIGEHARU

IPC: C22C23/04 ,  C22C23/00

CPC classification number: C22C23/04