含不同稳定剂氧化锆陶瓷的抗水热老化性能及其机理
Hydrothermal Aging Property and Mechanism of Zirconia Ceramics with Different Stabilizers
摘 要
将复合稳定剂稳定（C-TZP）、Y2O3稳定（Y-TZP）和CeO2稳定（Ce-TZP）四方相氧化锆多晶陶瓷在200℃水热处理0~45 h，研究了水热处理前后陶瓷的微观形貌、物相组成，以及不同水热时间下的力学性能，分析了其水热老化机理。结果表明：随着水热时间的延长，3种氧化锆陶瓷的硬度、抗弯强度及断裂韧性均有不同程度下降，其中Y-TZP陶瓷的下降幅度最大，C-TZP陶瓷的次之；与水热处理前的相比，Y-TZP陶瓷水热处理30 h后其单斜相体积分数增加了58%，Ce-TZP陶瓷和C-TZP陶瓷水热处理45 h后单斜相含量增加较少，Y-TZP陶瓷的抗水热老化性能最差；Y2O3是引起水热老化的直接原因，减少Y2O3增加CeO2含量有利于抑制水热老化，其水热老化过程符合氧化锆陶瓷水热老化的化学腐蚀模型。
氧化锆陶瓷
水热老化
机理
composite stabilized
zirconia ceramics
hydrothermal aging
mechanism
Abstract
Composite stabilizer-stabilized (C-TZP), Y2O3-stabilized (Y-TZP) and CeO2-stabilized (Ce-TZP) tetragonal zirconia polycrystalline ceramics were hydrothermally treated at 200℃ for 0-45 h. The micromorphology, phase composition, and the mechanical properties at different hydrothermal time of the ceramics before and after hydrothermal treatment were studied. The hydrothermal aging mechanism was also analyzed. The results show that with the increase of hydrothermal time, the hardness, bending strength and fracture toughness of three zirconia ceramics all decreased, among which the decrease range of the Y-TZP ceramics was the largest, followed by that of the C-TZP ceramics. Comparing to that before hydrothermal treatment, the volume fraction of the monoclinic phase in Y-TZP ceramics increased by 58% after hydrothermal treatment for 30 h, while that in Ce-TZP and C-TZP ceramics increased relatively little after hydrothermal treatment for 45 h. The hydrothermal aging resistance of the Y-TZP ceramics was the worst. The direct reason for the hydrothermal aging was because of the addition of Y2O3. Decreasing the Y2O3 content and increasing the CeO2 content was in favor of controlling the hydrothermal aging. The hydrothermal aging process coincided well with the chemical etching model of the zirconia ceramics.
中图分类号 TQ174.1 DOI 10.11973/jxgccl201702005
所属栏目 试验研究
基金项目 清远市科技计划项目（2015D09）
收稿日期 2015/7/31
修改稿日期 2016/12/8
网络出版日期
作者单位点击查看
备注周宏明(1974-),男,湖南株洲人,副教授,博士。
引用该论文: ZHOU Hong-ming,XIA Qing-lu,LI Jian. Hydrothermal Aging Property and Mechanism of Zirconia Ceramics with Different Stabilizers[J]. Materials for mechancial engineering, 2017, 41(2): 24～29
周宏明,夏庆路,李荐. 含不同稳定剂氧化锆陶瓷的抗水热老化性能及其机理[J]. 机械工程材料, 2017, 41(2): 24～29
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参考文献
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【4】孙静, 黄传真, 刘含莲, 等. 稳定氧化锆陶瓷的研究现状[J]. 机械工程材料, 2005, 29(8):1-3.
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【6】KOBAYASHI K, KUWAJIMA H, MASAKI T. Phase change and mechanical properties of ZrO2-Y2O3 solid electrolyte after ageing[J]. Solid State Ionics, 1981, 3:489-493.
【7】NOGIWA-VALDEZ A A, RAINFORTH W M, STEWART T D. Wear and degradation on retrieved zirconia femoral heads[J]. Journal of the Mechanical Behavior of Biomedical Materials, 2014, 31:145-151.
【8】CATTANI-LORENTE M, SCHERRER S S, DURUAL S, et al. Effect of different surface treatments on the hydrothermal degradation of a 3Y-TZP ceramic for dental implants[J]. Dental Materials, 2014, 30(10):1136-1146.
【9】周振君, 吴学倩, 肖素岗, 等. Y-TZP/板状氧化铝复相陶瓷的低温时效行为[J]. 机械工程材料, 2009, 33(4):79-81.
【10】LANGE F F, DUNLOP G L, DAVIS B I. Degradation during aging of transformation-toughened ZrO2-Y2O3 materials at 250℃[J]. Journal of the American Ceramic Society, 1986, 69(3):237-240.
【11】SCHUBERT H. Anisotropic thermal expansion coefficients of Y2O3-stabilized tetragonal zirconia[J]. Journal of the American Ceramic Society, 1986, 69(3):270-271.
【12】LEPISTÖ T T, MANTYLA T A. A model for structural degradation of Y-TZP ceramics in humid atmosphere[C]//A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2.[S.l.]:John Wiley & Sons, Inc., 1989:658-667.
【13】GOLIESKARDI M, SATGUNAM M, RAGURAJAN D. Densification behaviour and mechanical properties of aluminium oxide and cerium oxide-doped yttria tetragonal zirconia polycrystal ceramics using two-step sintering[J/OL]. Journal of Nanoscience, 2014:303579. http://dx.doi.org/10.1155/2014/303579.
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【16】MASAKI T. Mechanical properties of Y-PSZ after aging at low temperature[J]. International Journal of High Technology Ceramics, 1986, 2(2):85-98.
【17】KEUPER M, EDER K, BERTHOLD C, et al. Direct evidence for continuous linear kinetics in the low-temperature degradation of Y-TZP[J]. Acta Biomaterialia, 2013, 9(1):4826-4835.
【18】KOHORST P, BORCHERS L, STREMPEL J,et al. Low-temperature degradation of different zirconia ceramics for dental applications[J]. Acta Biomaterialia, 2012, 8(3):1213-1220.
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