인듐, 주석, 동 첨가에 따른 도재소부용 금합금의 기계적 특성 변화

This study was performed to observe the microhardness change of the surface and the bonding strengthbetween the porcelain and alloy specimens in order to investigate the effects of appended indium, tin and copperon interfacial properties of Au-Pd-Ag alloys. The hardness of castings was measured with a micro-Vicker'shardness tester.The interfacial shear bonding strength between alloy specimen and fused porcelain was measured with amechanical testing system(MTS 858.20).The microhardness of Au-Pd-Ag alloy was increased by adding indium and tin, but not increased by addingcopper. The shear bonding strength of Au-Pd-Ag-Sn alloy and Au-Pd-Ag-Cu alloy showed 87MPa, 57MPa. Thehigher concentration of adding elements showed the higher shear bonding strength.