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J. Korean Ceram. Soc. > Volume 42(6); 2005 > Article
Journal of the Korean Ceramic Society 2005;42(6): 411.
doi: https://doi.org/10.4191/kcers.2005.42.6.411
3Y-TZP의 기계적 물성에 미치는 영향: (I) 단사정지르코니아의 첨가
양성구, 배경만1, 조범래2, 강종봉3
경남대학교 대학원 재료공학과, 경남대학교 공동기기센터
1경남대학교 대학원 재료공학과
2계명대학교 신소재공학과
3경남대학교 신소재공학부
Effect on Mechanical Properties of 3Y-TZP; (I) Addition of Monoclinic Zirconia
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
Y-TZP(Yttria-stabilized Tetragonal Zirconia Polycrystal) ceramics are of great interest as engineering and structural materials due to their excellent mechanical properties arising from transformation toughening, it is also reported that the 3Y-TZP($3 mol%$ Yttria-stabilized Tetragonal Zirconia Polycrystal) has the best mechanical properties in Y-TZP ceramics. But to use widely for engineering and structural materials, it remains an important challenge to be able to improve its fracture toughness. In order to produce the 3Y- TZP ceramics showing much better mechanical properties, milling method adding monoclinic zirconia to 3Y-TZP was adopted and the resultant mechanical properties containing apparent density and fracture toughness were measured by using proper techniques. Experimental results showed that the 3Y-TZP specimen containing $33 wt%$ of monoclinic zirconia, which was sintered at $1450^{circ}C$, has the highest fracture toughness value of $11.38 MPa{cdot}m^{1/2}$ which is three times higher than that of normal 3Y-TZP ceramics.
Key words: 3Y-TZP, Milling method, Fracture toughness, Transformation toughening
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