Low Temperature Synthesis and Characterization of CaO and MgO-Stabilized Nanocrystalline Tetragonal Zirconia by Citrate Gel Process
The citrate gel method,similar to the polymerized complex method,was used to synthesize homogenous tetragonal zirconia at 800℃ and 1000℃.Nanocrystalline tetragonal single phase has been fully stabilized with 3,7,10 mol% CaO and 10,15 mol% MgO at 800℃,respectively.In addition,the XRD analysis showed the absence of monoclinic phase after addition of 7 and 10 mol% CaO into zirconia-based solid solutions,which have been fully stabilized both 800℃ and 1000℃.The crystallite sizes of the t-ZrO2 with 3,7 and 10 mol% CaO at 1000℃ were 32,28 and 29nm,respectively.For ZrO2-x mol% MgO (x=3,10,15) solid solution,the crystallite sizes of samples at 800℃ were less than 29nm,however it was increased up to 69nm at 1000℃.The prepared gel and subsequent heat-treated powders were characterized by X-ray diffraction (XRD),Raman spectroscopy and transmission electron microscopy (TEM) to get detail information regarding to differentiation of polymorphs ofzirconia as well as formation of powders.
Tetragonal zirconia Citrate gel method Calcia Magnesia
Hasan Gocmez Hirotaka Fujimori
Department of Advanced Materials Science and Engineering,Faculty of Engineering,Yamaguchi University Department of Advanced Materials Science and Engineering,Faculty of Engineering,Yamaguchi University
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
754-757
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）