3Y-TZP ceramics with improved hydrothermal degradation resistance and fracture toughness

被引：102
作者：
Zhang, F. [1 ]
Vanmeensel, K. [1 ]
Inokoshi, M. [2 ,3 ]
Batuk, M. [4 ]
Hadermann, J. [4 ]
Van Meerbeek, B. [2 ,3 ]
Naert, I. [2 ,3 ]
Vleugels, J. [1 ]
机构：
[1] Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Leuven, Belgium
[2] Katholieke Univ Leuven, Dept Met & Mat Engn, B-3001 Leuven, Belgium
[3] Univ Hosp Leuven, B-3000 Leuven, Belgium
[4] Univ Antwerp, Electron Microscopy Mat Res, B-2020 Antwerp, Belgium
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2014年 / 34卷 / 10期
关键词：
Coated; 3Y-TZP; Co-precipitated; Degradation; Alumina; LOW-TEMPERATURE DEGRADATION; TETRAGONAL ZIRCONIA POLYCRYSTALS; Y-TZP; MECHANICAL-PROPERTIES; PHASE-TRANSFORMATION; GRAIN-SIZE; MARTENSITIC-TRANSFORMATION; YTTRIA; ALUMINA; POWDER;
D O I：
10.1016/j.jeurceramsoc.2014.02.026
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Different factors such as the way of incorporating the Y2O3 stabilizer, alumina addition and sintering temperature were assessed with the goal to improve the low temperature degradation (LTD) resistance of 3Y-TZP without compromising on the mechanical properties. The degradation of hydrothermally treated specimens was studied by X-ray diffraction, micro-Raman spectroscopy and scanning electron microscopy. Decreasing the sintering temperature decreased the LTD susceptibility of 3Y-TZPs but did not allow to obtain a LTD resistant 3Y-TZT with optimized mechanical properties. Alumina addition along with the use of Y2O3 stabilizer coated starting powder allowed to combine both an excellent toughness and LTD resistance, as compared to alumina-free and stabilizer co-precipitated powder based equivalents. Transmission electron microscopy revealed that the improved LTD resistance could be attributed to the segregation of Al3+ at the grain boundary and the heterogeneously distributed Y3+ stabilizer. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2453 / 2463
页数：11
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