Pd가 함유된 Au-Cu-Zn계 합금의 구강내온도에서의 시효경화능
Age-Hardenability of Au-Cu-Zn Alloy Containing Pd at Intraoral Temperature
이광영, 조수연, 표애리, 권용훈, 김형일, 설효정,
소속 상세정보
이광영 ( Lee Gwang-Young ) - 부산대학교 치의학전문대학원 치과재료학교실
조수연 ( Cho Su-Yoen ) - 부산대학교 치의학전문대학원 치과재료학교실
표애리 ( Pyo Ae-Ri ) - 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 : 0362220120390030183
Abstract
In the present study, the age-hardenability of various Au-Cu-Zn alloys containing Pd at intraoral temperature was evaluated by means of hardness test and X-ray diffraction (XRD) study after solution-treatment at various temperatures and then aging at intraoral temperature. The apparent age-hardenability of Pd-free AuCu-20Zn(at%) alloys (specimen 1) at intraoral temperature resulted from the formation of the AuCu Il ordered phase, and the age-hardenability at intraoral temperature became apparent with increasing solution-treatment temperature. The age-hardenability of the Au-Cu-Zn alloys containing Pd at intraoral temperature decreased with increasing Pd content. The alloys containing 5 at% Pd showed relatively apparent age-hardenability at intraoral temperature, which resulted from the atomic diffusion by the help of quenched in excess vacancies. The low e/a-value (electrons per atom) of Pd was thouhgt to be the reason for the inhibition of the AuCu Il phase formation in the Au-Cu-Zn alloys containing Pd.
키워드
Age-hardenability at intraoral temperature; AuCu Il; Solution-treatment; Au-Cu-Zn-Pd
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