3Y-TZP Zirconia 조성에서 Frit의 첨가에 의한 기계적 특성 연구
A Study on the Mechanical Properties Based on Frit Addition in 3Y-TZP Zirconia Composition
권은자, 이규선, 이채현,
소속 상세정보
권은자 ( Kwon Eun-Ja ) - 혜전대학 치기공과
이규선 ( Lee Gyu-Sun ) - 동남보건대학 치기공과
이채현 ( Lee Chae-Hyun ) - 배재대학교 재료공학과
KMID : 0362120070290010049
Abstract
This study was to add crushed frit with different grain sizes to 3Y-TZP so that it could determine the mechanical properties depending on sintering temperature. In this study, 3 types specimens were prepared in powder with respective additions of 20wt.% frit, which was sized through 24-, 48- and 72-hour ball milling with zirconia. Then, sintered pellets were tested in experiments under the temperature variations for different compositions. As a result, this study came to the following findings: 1. It was found that the higher sintering temperature and the longer ball milling time of frit led to the higher sintered density. 2. Bending strength tended to increase with higher sintering temperature and longer ball milling time of frit. 3. Hardness tended to increase with higher sintering temperature and longer ball milling time of frit. 4. However, it was found that fracture toughness didn’t vary significantly depending on sintering temperature. From these findings, it was concluded that the smaller frit grain size and the narrower particle size distribution of frit lead to the better mechanical properties.
키워드
3Y-TZP Zirconia;Frit;Sintering temperature
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