Au-Cu-Zn계 합금의 구강내 온도에서의 시효경화효과에 미치는 첨가원소의 영향
Effects of alloying elements on age-hardenability of Au-Cu-Zn alloys at intra-oral temperature
설효정, 조수연, 이광영, 정지인, 표애리, 권용훈, 김형일,
소속 상세정보
설효정 ( Seol Hyo-Joung ) - 부산대학교 치의학전문대학원 치과재료학교실
조수연 ( Cho Su-Yoen ) - 부산대학교 치의학전문대학원 치과재료학교실
이광영 ( Lee Gwang-Young ) - 부산대학교 치의학전문대학원 치과재료학교실
정지인 ( Jeong Ji-In ) - 부산대학교 치의학전문대학원 치과재료학교실
표애리 ( Pyo Ae-Ri ) - 부산대학교 치의학전문대학원 치과재료학교실
권용훈 ( Kwon Yong-Hoon ) - 부산대학교 치의학전문대학원 치과재료학교실
김형일 ( Kim Hyung-Il ) - 부산대학교 치의학전문대학원 치과재료학교실
KMID : 0362220130400010007
Abstract
In the present study, the age-hardenability at intra-oral temperature of various Au-Cu-Zn alloys containing Ga, Ti, Sn, Cr was evaluated by means of hardness test and X-ray diffraction (XRD) study after solution-treatment at various temperatures and then aging at intra-oral temperature. By the addition of Ti and Sn, the age-hardenability at intra-oral temperature of Au-Cu-Zn alloys decreased apparently.And by the addition of Ga and Cr, the apparent age-hardenability at intra-oral temperature of Au-Cu-Zn alloys was preserved. In Cr-added Au-Cu-Zn alloys, the reduction of Cu content rather than Zn content was much more effective for preserving the age-hardenability at intra-oral temperature. The apparent age-hardenability at intra-oral temperature of Ga- or Cr-added Au-Cu-Zn alloys attributed to the formation of the AuCu II ordered phase. In the Au-Cu-Zn alloys containing Cr, the increased Cr content did not prevent the formation of AuCu II ordered phase at intra-oral temperature, but possibly reduced the driving force for the formation of AuCu II ordered phase at intra-oral temperature. If Ga- or Cr-added Au-Cu-Zn alloy having apparent age-hardenability at intra-oral temperature is used as a dental alloy, it will become harder in the oral cavity without additional heat-treatment.
키워드
Age-hardenability; Intra-oral temperature; AuCu II; Au-Cu-Zn-Cr; Au-Cu-Zn-Ga
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