SiO_2杂质对部分稳定ZrO_2陶瓷稳定剂固溶的影响
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- 英文论文题名：Influence of SiO_2 Impurity on Solid Solution of Stabilizer in Partially Stabilized Zirconia Ceramic
- 论文作者：赵亮 ; 薛群虎
- 英文论文作者：ZHAO Liang ; XUE Qunhu ; College of Materials and Mineral Resources ; Xi'an University of Architecture and Technology ; Shaanxi Techno-institute of Recycling Economy
- 年：2016
- 作者机构：西安建筑科技大学材料与矿资学院;陕西循环经济工程技术院;
- 论文关键词：部分稳定氧化锆 ; 杂质 ; 稳定剂 ; 固溶
- 英文论文关键词：partially stabilized zirconia ; impurity ; stabilizer ; solid solution
- 会议召开时间：2016-11-18
- 会议录名称：第一届先进材料前沿学术会议论文集（《材料导报》2016年第30卷第Z1期）
- 语种：中文
- 分类号：TQ174.758.11
- 学会代码：CLDB
- 会议名称：第一届先进材料前沿学术会议
- 会议地点：中国陕西西安
- 主办单位：《材料导报》杂志社
- 学会名称：材料导报编辑部
- 页数：4
- 文件大小：1339k
- 原文格式：O
- 会议级别：全国
摘要
分别以MgO和MgO+Y_2O_3为稳定剂、单斜氧化锆细粉为主要原料制备了部分稳定ZrO_2陶瓷试样,借助X射线衍射仪、扫描电子显微镜和能谱仪等表征手段,研究了在工作温度下SiO_2杂质对部分稳定ZrO_2陶瓷中稳定剂固溶过程的影响。结果表明:1 710℃烧结2 h后,MgO单一稳定的ZrO_2陶瓷试样中稳定剂固溶并未达到平衡状态,一部分MgO稳定剂会富集在SiO_2杂质集中的位置形成低熔点相,导致试样中氧化锆稳定相含量较少。随着在1 540℃工作温度下保温时间的延长,低熔点相会逐步分解,MgO稳定剂的固溶和氧化锆陶瓷的稳定化会在8 h内完成;而MgO+Y_2O_3复合稳定的试样在烧成后稳定剂的固溶已基本完成,1 540℃热处理后SiO_2杂质对稳定剂分布及稳定化程度基本没有影响。
The partially stabilized zirconia ceramic samples were prepared using desilicated zirconia powder as raw material,MgO or MgO+Y_2O_3 as stabilizers.The influence of SiOfe impurity on solid solution process of stabilizers in the PSZ ceramic under working temperature was studied by XRD,SEM and EDS.Results show that the zirconia ceramic after sintering at 1 710 t for 2 h can not be stabilized by MgO completely,and some MgO are enriched in the area of impurity SiO_2 forming low-melting phase so the stability degree of sample can not reach its equilibrium state.The low-melting phase composed of SiO_2 and MgO decomposed partly with prolonging dwelling time of heat treatment at working temperature of 1 540 t,and the solid solution of MgO stabilizer and stabilization of the sample can be completed in 8 h.For zirconia ceramic sample stabilized by MgO+Y_2O_3,solid solution had been completed after sintering at 1 710℃ for 2 h,the SiO_2 has little influence on the stability degree of sample and the distribution of MgO+Y_2O_3 stabilizers with prolonging dwelling time of heat treatment.
The partially stabilized zirconia ceramic samples were prepared using desilicated zirconia powder as raw material,MgO or MgO+Y_2O_3 as stabilizers.The influence of SiOfe impurity on solid solution process of stabilizers in the PSZ ceramic under working temperature was studied by XRD,SEM and EDS.Results show that the zirconia ceramic after sintering at 1 710 t for 2 h can not be stabilized by MgO completely,and some MgO are enriched in the area of impurity SiO_2 forming low-melting phase so the stability degree of sample can not reach its equilibrium state.The low-melting phase composed of SiO_2 and MgO decomposed partly with prolonging dwelling time of heat treatment at working temperature of 1 540 t,and the solid solution of MgO stabilizer and stabilization of the sample can be completed in 8 h.For zirconia ceramic sample stabilized by MgO+Y_2O_3,solid solution had been completed after sintering at 1 710℃ for 2 h,the SiO_2 has little influence on the stability degree of sample and the distribution of MgO+Y_2O_3 stabilizers with prolonging dwelling time of heat treatment.
引文
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9 Xue Qunhu,Liu Wei,Zhao Liang,et al.The effect of stabilizer on phase composition and microstructure of ZrO_2 sizing nozzle matrix before and after sintering[J].J Funct Mater,2015,46(12):12974(in Chinese).薛群虎,刘微,赵亮,等.稳定剂对ZrO_2质定径水口基质烧成前后相组成和显微结构的影响[J].功能材料,2015,46(12):12974.
10 Porter D L,Heuer A H.Microstructural development in MgO-partially stabilized zirconia(Mg-PSZ)[J].J Am Ceram Soc,1979,62:298.
11 Zhao J X,Zhang Y J,Gong H Y,et al.Fabrication of high-performance Y_2O_3 stabilized hafnium dioxide refractories[J].Ceram Int,2015,41:5232.
12陆佩文.无机材料科学基础[M].武汉:武汉理工大学出版社,2008:152.
2 Yu Xinmeng,Xu Baokui,Yuan Fefa.Stabilizing and applications of zirconia[J].Rare Metals Lett,2007,26(1):28(in Chinese).余鑫萌,徐宝奎,袁发得.二氧化锆的稳定化及其应用[J].稀有金属快报,2007,26(1):28.
3尹衍生,李嘉.氧化锆陶瓷及其复合材料[M].北京:化学工业出版社,2004:1.
4 Lin Zhenhan,Lin Gang,Wu Liang,et al.Phase structure and transformation of zirconia[J].Chin J Rare Metals,2003,27(1):49(in Chinese).林振汉,林钢,吴亮,等.氧化锆系的相结构和转变[J].稀有金属,2003,27(1):49.
5 Chevalier J,Gremillard L,Virkar A V,et al.The tetragonal-monoclinic transformation in zirconia:Lessons learned and future trends[J].J Am Ceram Soc,2009,92(9):1901.
6 Emad M,Matthias W,Werner W.Phase stability and microstructural characteristics of 12 mol%(Mg,Ca)-PSZ prepared via polymeric route[J].Ceram Int,2003,29(2):189.
7 Yannick H,Christoph B,Klaus G N.Wetting and corrosion of yttria stabilized zirconia by molten slags[J].J Eur Ceram Soc,2012,32(11):2859.
8 Sun Jing,Huang Chuanzhen,Liu Hanlian,et al.A review on the stabilized zirconia ceramics doped with stabilizers[J].Mater Mechan Eng,2005,29(8):1(in Chinese).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.
9 Xue Qunhu,Liu Wei,Zhao Liang,et al.The effect of stabilizer on phase composition and microstructure of ZrO_2 sizing nozzle matrix before and after sintering[J].J Funct Mater,2015,46(12):12974(in Chinese).薛群虎,刘微,赵亮,等.稳定剂对ZrO_2质定径水口基质烧成前后相组成和显微结构的影响[J].功能材料,2015,46(12):12974.
10 Porter D L,Heuer A H.Microstructural development in MgO-partially stabilized zirconia(Mg-PSZ)[J].J Am Ceram Soc,1979,62:298.
11 Zhao J X,Zhang Y J,Gong H Y,et al.Fabrication of high-performance Y_2O_3 stabilized hafnium dioxide refractories[J].Ceram Int,2015,41:5232.
12陆佩文.无机材料科学基础[M].武汉:武汉理工大学出版社,2008:152.