연화열처리가 모의소성 된 금속-세라믹용 Pd-Au-Zn-In-Sn계 합금의 후열처리에 따른 경도 및 미세구조 변화에 미치는 영향
Effect of Softening Heat-treatment on the Hardness and Microstructural Changes by Post-firing Heat-treatment of a Firing Simulated Pd-Au-Zn-In-Sn Metal-Ceramic Alloy
신혜정, 김민정, 김성민, 권용훈, 김형일, 설효정,
소속 상세정보
신혜정 ( Shin Hye-Jung ) - 부산대학교 치의학전문대학원 치과재료학교실
김민정 ( Kim Min-Jung ) - 부산대학교 치의학전문대학원 치과재료학교실
김성민 ( Kim Sung-Min ) - 부산대학교 치의학전문대학원 치과재료학교실
권용훈 ( Kwon Yong-Hoon ) - 부산대학교 치의학전문대학원 치과재료학교실
김형일 ( Kim Hyung-Il ) - 부산대학교 치의학전문대학원 치과재료학교실
설효정 ( Seol Hyo-Joung ) - 부산대학교 치의학전문대학원 치과재료학교실
KMID : 1035320160430030257
Abstract
Effect of softening heat-treatment on the hardness and microstructural changes by post-firing heat-treatment of a firing simulated Pd-Au-Zn-In-Sn metal-ceramic alloy was examined by observing the change in hardness, crystal structure and microstructure. By post-firing heat-treatment after firing simulation of the as-cast and softening heat-treated specimens, the hardness value increased gradually and then reached to the maximum value at holding time of 25min at 600℃. And the gap of hardness value among the specimens was not great. The increased hardness began to decrease from the holding time of 30min, thus post-firing heat-treatment longer than 25min was not advisable. The hardness increase during the post-firing heat-treatment was resulted from the precipitation of the Au-containing PdZn phase of the f.c.t. structure from the Pd-Au-rich matrix of the f.c.c. structure.
키워드
Pd-Au-Zn-In-Sn metal-ceramic alloy; Post-firing heat-treatment; Solution-treatment; Precipitation hardening; Simulated complete firing
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