公开(公告)号：JP2003096525A

公开(公告)日：2003-04-03

申请号：JP2001288186

申请日：2001-09-21

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： RO YOSHIICHI ,  MITARAI YOKO ,  HARADA KOJI ,  NAKAZAWA SHIZUO ,  SAKAUCHI HIDENORI

IPC: C22C5/04 ,  C22C19/03

Abstract: PROBLEM TO BE SOLVED: To provide a platinum-iridium alloy which has a compressive strength above that of an Ni based single crystal heat resistant alloy at 1,200 deg.C, and has sufficiently high room temperature toughness. SOLUTION: In a Pt-Ir binary alloy, the content of Ir is >0 to

公开(公告)号：JP2002285260A

公开(公告)日：2002-10-03

申请号：JP2001091137

申请日：2001-03-27

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： MITARAI YOKO ,  TANI TSUKIMINE ,  RO YOSHIICHI ,  NAKAZAWA SHIZUO ,  HARADA KOJI

IPC: F01D5/28 ,  C22C5/04

Abstract: PROBLEM TO BE SOLVED: To provide Ir-Nb alloy having improved creep life which is considered to be a material useful for members for use in high temperature and high stress, such as a jet engine, turbine blades and turbine vane of a gas turbine, and further a space-plane engine, etc. SOLUTION: In the Ir-Nb alloy in which iridium (Ir) is used as a base and niobium (Nb) is added to it and precipitates with Ll2 structure are precipitated in a matrix with fcc structure in a manner to be coherent with the matrix. In this alloy, >=1 atomic % niobium and >=1 atomic % zirconium (Zr) are added and the sum of the additive quantities of niobium and zirconium is made to 10-20 atomic %, and further, this alloy exhibits >=100 hr creep life at >=1,600 deg.C.

公开(公告)号：JP2001303152A

公开(公告)日：2001-10-31

申请号：JP2000120110

申请日：2000-04-20

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： MITARAI YOKO ,  TANI TSUKIMINE ,  RO YOSHIICHI ,  HARADA KOJI

IPC: C22C5/00 ,  C22C5/04

Abstract: PROBLEM TO BE SOLVED: To produce an iridium based cemented carbide which has excellent high temperature strength, or higher strength and in which grain boundaries are strengthened, and intergranular cracking is suppressed. SOLUTION: In the iridium based cemented carbide having a composition consisting of iridium as a base, to which one or more kinds of metals selected from the metallic groups consisting of vanadium, titanium, niobium, tantalum, hafnium and zirconium are added by 2 to 22 atomic %, and in which precipitates having an LI2 structure are comformably precipitated into a base phase having an fcc structure, further, carbon or boron (in the case of boron, by 200 wppm at most) in a trace amount by which a third phase does not appear is added.

公开(公告)号：JP2003121320A

公开(公告)日：2003-04-23

申请号：JP2001311065

申请日：2001-10-09

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： YAMAMOTO YOSHINOBU ,  MITARAI YOKO ,  HIROSAKI NAOTO ,  HARADA KOJI

IPC: G01N1/28

Abstract: PROBLEM TO BE SOLVED: To provide a method for accurately and simply analyzing an iridium alloy, enabling the melting and chemical analysis of the iridium alloy chemically stable and difficult to melt because of a metal bond. SOLUTION: An alkaline peroxide is added to a powder sample of the iridium alloy to heat and melt the iridium alloy. This molten iridium alloy is dissolved in aqua regia to obtain a solution sample which is, in turn, used to quantify the element in the iridium alloy.

公开(公告)号：EP2617860A4

公开(公告)日：2014-06-25

申请号：EP11823634

申请日：2011-09-08

Applicant: NAT INST FOR MATERIALS SCIENCE

Inventor： BAO ZEBIN ,  MITARAI YOKO ,  MURAKAMI HIDEYUKI

IPC: C23C10/48 ,  B22F1/02 ,  C22C5/04 ,  C22C29/12

CPC classification number: B32B15/16 ,  B05D5/00 ,  B22F7/04 ,  B32B15/043 ,  C22C5/04 ,  C22C28/00 ,  C22C32/0021 ,  C23C10/48 ,  Y10T428/12063

Abstract: An Ir-based alloy material or Ru-based alloy material containing in Ir or Ru at least one member of Al, Sc, Ti, V, Cr, Mn, Y, Zr, Nb, Mo, Tc, Hf, Ta, W, and Re in such an amount that a precipitation phase is not formed, wherein the Ir-based alloy material or Ru-based alloy material has a surface uniformly covered with an IrAl intermetallic compound film or a RuAl intermetallic compound film.

Abstract translation: 基于IR的合金材料或以铱或Ru的Al，钪，钛，钒，铬，锰，钇，锆，铌，钼，锝，铪，钽，W中的至少一个成员包含Ru基合金材料， 和再在寻求量没有沉淀相未形成，worin基于铱合金材料或Ru基合金材料具有覆盖有均匀地IRAL金属间化合物或电影的RuAl金属间化合物电影的表面。

公开(公告)号：EP2733227A4

公开(公告)日：2015-04-01

申请号：EP12814884

申请日：2012-07-13

Applicant: NAT INST FOR MATERIALS SCIENCE ,  IHI CORP

Inventor： MITARAI YOKO ,  KAWAKITA MAMIKO ,  PING DE-HAI ,  HARA TORU ,  TAKAHASHI SATOSHI ,  TAKAHASHI MADOKA

IPC: C22C5/04 ,  C22C14/00 ,  C22F1/00 ,  C22F1/14

CPC classification number: F03G7/065 ,  C21D2201/01 ,  C21D2211/008 ,  C22C5/04 ,  C22C14/00 ,  C22F1/006 ,  C22F1/14 ,  C22F1/183

Abstract: The present invention provides a high-temperature shape memory alloy, in which Hf, Zr, Ta, Nb, V, Mo, and W as a third element except Ni are added to TiPd to thereby improve high-temperature strength and exhibit large shape recovery in a high-temperature range of 200°C to 500°C, and a method for producing the high-temperature shape memory alloy.