인산염계 SiO2 주형재와 치과주조용 Ti-Zr-(Cu)계 합금의 계면반응
Surface Reaction between Phosphate bonded SiO2 Investment and Ti-Zr-(Cu) based Alloys for Dental castings
주규지,
소속 상세정보
주규지 ( Joo Kyu-Ji ) - 비젼치과기공소
KMID : 0362120050270010057
Abstract
Experimental Ti-13%Zr and Ti-13%Zr-5%Cu alloys were made in an argon-arc melting furnace. The grade 2 CP Ti was used to control. To investigate the surface reaction layers produced by the reaction with mold materials and the influence of the reaction layers on the hardness of castings, A phosphate bonded SiO2 base investment was used as mold material, and microstructure observation and hardness test were performed. The surface reaction layers of Ti-13%Zr and Ti-13%Zr-5%Cu alloys were thinner than that of CP Ti had a clearly multiple structure. A difference of the hardness between surface and inner of the Ti-13%Zr and Ti-13%Zr-5%Cu alloys became less than that of CP Ti. From the results, it was found that the Ti-Zr-(Cu) based alloys were possible to cast with SiO2 base investment without the great changes of mechanical properties of the castings.
키워드
argon-arc melting furnace;the surface reaction layers;phosphate bonded SiO2 base investment;microstructure observation
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