公开(公告)号：US20240158890A1

公开(公告)日：2024-05-16

申请号：US18284377

申请日：2022-03-25

Applicant: Tokyo University of Science Foundation

Inventor： Ryuji Tamura ,  Kazuki Minami ,  Hiyori Yokoyama ,  Yutaro Abe ,  Asuka Ishikawa

IPC: C22C5/02 ,  C22C1/02

CPC classification number: C22C5/02 ,  C22C1/02

Abstract: A gold alloy and a method for producing the gold alloy. The gold alloy includes: gold; and an Au—X-RE-based hypermaterial represented by a compositional formula AU100-(a+b)XaREb, wherein, in the compositional formula, X represents at least one atom selected from the group consisting of Al, Ga, In, Si, Ge, and Sn; RE represents a rare-earth element; and a and b respectively represent a content of X and a content of RE, expressed in at %, and satisfy the following (1) and (2): 10≤a≤40 (1); and 13≤b≤17 (2), wherein the Au—X-RE-based hypermaterial is dispersed in a gold matrix phase.