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Property of Ge, In Added Silver Alloy with Plastic Deformation

Ge, In 첨가 은합금 주조물의 가압성형에 따른 물성변화 연구

  • Kim, Jun-Hwan (Dept. of Material Science and Engineering, University of Seoul) ;
  • Song, Oh-Sung (Dept. of Material Science and Engineering, University of Seoul)
  • 김준환 (서울시립대학교 신소재공학과) ;
  • 송오성 (서울시립대학교 신소재공학과)
  • Received : 2009.12.17
  • Accepted : 2010.05.13
  • Published : 2010.05.31

Abstract

We newly propose the silver alloys of Ag-5wt%Ge-2.5wt%Cu(Ge1) and Ag-5wt%In-2.5wt%(In1) to overcome the tarnish and mechanically weak problems of the conventional sterling silver Ag-7.5wt%Cu (Cu1). We check the castability, surface color stability during process and wearing, and work hardening with plastic deformation of all three silver alloys. Our newly proposed silver alloys of Ge1 and In1 showed improved castability, anti-tarnish stability, and work hardening property compared to the conventional sterling silver, which implied that these alloys might be more appropriate for the high-end silver jewelry.

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