| 3Y-TZP의 기계적 물성에 미치는 영향: (II) 알루미나의 첨가 |
| 양성구, 배경만1, 조범래2, 강종봉3 |
경남대학교 대학원 재료공학과, 경남대학교 공동기기센터
1경남대학교 대학원 재료공학과
2계명대학교 신소재공학과
3경남대학교 신소재공학부 |
| Effect on Mechanical Properties of 3Y-TZP; (II) Addition of Alumina |
| Seong-Koo Yang, Kyung-Man Bae1, Bum-Rae Cho2, Jong-Bong Kang3 |
Department of Materials Science and Engineering, Kyungnam University, The Center for Instrumental Analysis in Kyungnam University
1Department of Materials Science and Engineering, Kyungnam University
2Department of Advanced Materials Engineering, Keimyung University
3Division of Advanced Materials Engineering, Kyungnam University |
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| ABSTRACT |
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Although a lot of studies in fracture toughness of Y-TZP ceramics for structural applications have been done, it remains an important challenge to be able to improve fracture toughness of Y-TZP ceramics. In this research, milling method adding monoclinic zirconia and $Al_2O_3$ to 3Y-TZP was introduced to improve the fracture toughness of 3Y-TZP. Experimental results showed that addition of small amount of $Al_2O_3$ causes to make lots of oxygen vacancies (VO) by substituting $Al^{3+}$ for $Zr^{4+}$. It is believed that the produced vacancies provides useful routes far mass transfer. Y-TZP ceramics having higher microhardness and better fracture toughness was fabricated by sintering at $1400^{circ}C$. |
| Key words:
3Y-TZP, Milling method, Fracture toughness |
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