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CaO稳定ZrO_2陶瓷的显微结构特征及其对渗氧性的影响
作者:窦士学 P. D. Pacey C. R. Masson 
单位:东北工学院化学系  达尔豪斯大学化学系  加拿大国家科学委员会大西洋实验室 
关键词:渗氧常数  第二相  渗氧池  时效效应 
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出版年,卷(期):页码:1990,18(1):59-64
DOI:
摘要:
应用扫描电子显微镜、X射线分析以及化学分析技术,研究了掺CaO稳定的ZrO_2陶瓷(CSZ)样品的显微结构特征。显微相片阐明了第二相(玻璃相)、气孔的形成以及晶粒生长特性。利用渗氧池方法测定了各种样品的渗氧常数。测试结果发现第二相中存在Fe_2O_3会明显提高渗氧性并导致时效效应,因此对Fe_2O_3必须加以严格控制。
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Microstructures of calcia-stabilized zirconia (CSZ) from different sources were examined by means of SEM technique, X-ray analyses and chemical analyses. The characteristics of the second phases, pore formation and grain growth were illustrated. Oxygen permeability constants of CSZ were determined using oxygen diffusion cell. It is found that the presence of iron oxide in the second phase enhances the oxygen permeability and induces the aging effect, t-ence iron oxide should be carefully controlled.
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参考文献:
[1] A. W. Smith, F. Mesgaros, and C. D. Amata, J. Amer. Ceram. Soc., 49[5] (1966) 240. [2] M. lwase and T. Mori, Met. Trans., 9B[3] (1978) 365. [3] S. F. Palguev, V. K. Gilderman, and A. D. Neujmin, J. Electrochem. Soc., 122[6] (1975) 745. [4] L. Heyne and N. M. Beekmans, Proc. Brit. Ceram. Soc., 19[2] (1971) 229. [5] Dou Shixue, C. R. Masson, and P. D. Pacey, J. Electrochem. Soc., 132[8] (1985) 1843. [6] Dou Shixue, C. R. Masson, and P. D. Pacey, J. Amer. Ceram. Soc., 68[3] (1985) C-80. [7] M. Sasabe and Y. Kinoshita, Trans. ISIJ, 20[12] (1980) 801. [8] J. A. Kilner and B. C. H. Steele, Nonstoichiometric Oxides, Ed. by O. T. Sorensen,(1981) 233-268. [9] C. R. Masson, P. D. Pacey, and Dou Shixue, United States Patent, No. 4749466(1988) .
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