公开(公告)号：US20230113633A1

公开(公告)日：2023-04-13

申请号：US18081322

申请日：2022-12-14

申请人： TANAKA KIKINZOKU KOGYO K.K. ,  TOKUSHIMA UNIVERSITY

发明人： Michimasa OKUBO ,  Kenji GOTO ,  Kunihiro TANAKA ,  Kojiro SHIRAISHI ,  Kunihiro SHIMA ,  Yuya KATO ,  Kenichi HAMADA ,  Eiichi HONDA ,  Emi TAKEGAWA

IPC分类号： C22C5/02 ,  A61L29/02 ,  A61L31/02 ,  C22F1/14

摘要： The present invention relates to a medical Au-Pt-Pd alloy including Au, Pt,Pd, and inevitable impurities. The Au-Pt-Pd alloy has an alloy compositioninside a polygon (A1-A2-A3-A4) surrounded by straight lines connected at pointA1 (Au: 53 atom%, Pt: 4 atom%, and Pd: 43 atom%), point A2 (Au: 70 atom%,Pt: 4 atom%, and Pd: 26 atom%), point A3 (Au: 69.9 atom%, Pt: 30 atom%, and Pd: 0.1 atom%), and point A4 (Au: 49.9 atom%, Pt: 50 atom%, and Pd: 0.1 atom%) in a Au-Pt-Pd ternary state diagram. In a metal structure of the alloy, at least one of a Au-rich phase and a Pt-rich phase is distributed, and the total of the area ratio of the Au-rich phase and the area ratio of the Pt-rich phase is 1.5% or more and 25.4% or less.

公开(公告)号：US20220213576A1

公开(公告)日：2022-07-07

申请号：US17607397

申请日：2020-09-24

申请人： TANAKA KIKINZOKU KOGYO K.K. ,  TOKUSHIMA UNIVERSITY

发明人： Michimasa OKUBO ,  Kenji GOTO ,  Kunihiro TANAKA ,  Kojiro SHIRAISHI ,  Kunihiro SHIMA ,  Yuya KATO ,  Kenichi HAMADA ,  Eiichi HONDA ,  Emi TAKEGAWA

IPC分类号： C22C5/02 ,  C22C1/02

摘要： The present invention relates to a medical Au—Pt—Pd alloy including Au, Pt, Pd, and inevitable impurities. The alloy has an alloy composition inside a polygon (A1-A2-A3-A4-A5-A6) surrounded by straight lines connected at point A1 (Au: 37.9 atom %, Pt: 0.1 atom %, and Pd: 62 atom %), point A2 (Au: 79.9 atom %, Pt: 0.1 atom %, and Pd: 20 atom %), point A3 (Au: 79.9 atom %, Pt: 20 atom %, and Pd: 0.1 atom %), point A4 (Au: 69.9 atom %, Pt: 30 atom %, and Pd: 0.1 atom %), point A5 (Au: 49 atom %, Pt: 30 atom %, and Pd: 21 atom %), and point A6 (Au: 39 atom %, Pt: 40 atom %, and Pd: 21 atom %) in a Au—Pt—Pd ternary state diagram. The metal structure of the alloy is optimized, and the metal structure is close to a single-phase structure, and has little precipitation of a Au-rich phase and a Pt-rich phase different in composition from a mother phase.