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采用常压烧结方法制备了CaZrO3-MgO陶瓷.研究了MgO含量对CaZrO3-MgO陶瓷的显气孔率、体积密度、抗弯强度、物相组成、显微结构和断裂方式的影响.结果表明:含有lwt%~3wt% MgO的CaZrO3-MgO陶瓷由CaZrO3单相构成,气孔率低,体积密度高,抗弯强度大,断裂方式为穿晶与沿晶共存的混合断裂;含有20wt% ~40wt% MgO的CaZrO3-MgO陶瓷由MgO和CaZrO3两相构成,气孔率高,体积密度低,抗弯强度小,CaZrO3与MgO两相间的断裂方式为沿晶断裂;当MgO含量为2wt%时CaZrO3-MgO陶瓷的烧结性能最好,当MgO含量为40wt%时CaZrO3-MgO陶瓷的烧结性能最差.少量Mg2+的引入因其向CaZrO3中单向扩散而促进材料烧结,大量Mg2+的引入因其与Zr4+互扩散导致CaZrO3分解而阻碍材料烧结.

参考文献

[1] P. Stoch;J. Szczerba;J. Lis.Crystal structure and ab initio calculations of CaZrO_3[J].Journal of the European Ceramic Society,20123(3):665-670.
[2] Zhang HW;Fu XY;Niu SY;Xin Q.Blue luminescence of nanocrystalline CaZr3 : Tm phosphors synthesized by a modified Pechini sol-gel method[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,20088(8):1348-1352.
[3] Hwang, SC;Choi, GM.The mixed ionic and electronic conductivity of CaZrO3 with cation nonstoichiometry and oxygen partial pressure[J].Solid state ionics,200821/26(21/26):1042-1045.
[4] Fazli, Rahman;Golestani-Fard, F..Influence of zirconia particle size on the synthesis of CaZrO3 nano-powders from Na2CO3-NaCl molten eutectic salt[J].Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan,20145(5):1547-1553.
[5] M. Khalid;M. Mujahid;A. Nusair Khan.Effect of arc current on microstructure, texturing and wear behavior of plasma sprayed CaZrO_3 coatings[J].CERAMICS INTERNATIONAL,20133(3):2293-2302.
[6] Rodriguez, E. A.;Limones, A. K.;Contreras, J. E.;Ruiz-Valdes, J. J.;Puente-Ornelas, Rodrigo;Maria Arato, Ana;Aguilar-Martinez, J. A..Effect of hercynite spinel content on the properties of magnesia-calcium zirconate dense refractory composite[J].Journal of the European Ceramic Society,20159(9):2631-2639.
[7] 游杰刚;张国栋;金永龙;高配亮.二氧化硅对锆酸钙材料结构及性能的影响[J].人工晶体学报,2014(5):1280-1285.
[8] M.G. Brik;C.-G. Ma;V. Krasnenko.First-principles calculations of the structural and electronic properties of the cubic CaZrO_3 (001) surfaces[J].Surface Science: A Journal Devoted to the Physics and Chemistry of Interfaces,2013Feb.(Feb.):146-153.
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