Al_2O_3/TiB_2/SiC_w陶瓷材料的高温氧化行为

中国腐蚀与防护学报

1997, Vol. 17

Issue (2): 152-156

研究报告

本期目录 | 过刊浏览

Al_2O_3/TiB_2/SiC_w陶瓷材料的高温氧化行为

邓建新;艾兴;丁泽良

山东工业大学机械工程学院;济南250061;山东工业大学机械工程学院;济南250061;山东工业大学机械工程学院;济南250061

OXIDATION BEHAVIOR OF Al_2O_3/TiB_2/SiC_w CERAMICCOMPOSITES

DENG Jianxin AI Xing DING Zeliang (Department of Mechanical Engineering; Shandong University of Technology; Jinan 250061)

全文: PDF(1093 KB)

摘要: 采用热压烧结工艺制备了Al_2O_3/TiB_2/SiC_w陶瓷复合材料,研究了SiC晶须含量对其高温氧化行为的影响.用XRD、SEM、TEM/EDS分析了材料氧化后的相组成及显微结构,探讨了该材料的氧化机理。结果表明,不同SiC_w含量的Al_2O_3/TiB_2/SiC_w陶瓷材料在1400℃空气中氧化30h的氧化增重符合抛物线规律。随SiC晶须含量的增加,材料的氧化活化能降低。

关键词 ：陶瓷材料, 抗氧化性, SiC晶须

Abstract：Al2O3/TiB2/SiCw ceramic composites were produced by hot- pressing. The isothermal oxidation behavior of the composites with different SiCw contents was studied. Phase composition, microstructure and mechanical properties of the oxidized specimens were examind by XRD, SEM and TEM/EDS. It was found that these ceramic composites were oxidized in a parabolic manner of weight gain curves when exposed to air at temperature ranging from 1100℃ to 1400℃. The activation energy of oxidation decreased with increasing SiCw contents. The oxidation products of Al2O3/TiB2/SiCw ceramic composite included 3Al2O3, 2SiO2, B2O3 and CO. Because of the vaporization of B2O3 and CO, numerous open pores were formed on the surface.

Key words： Ceramic materials Oxidation resistance SiC whisker

收稿日期: 1997-04-25

基金资助:国家自然科学基金资助课题

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引用本文:

邓建新;艾兴;丁泽良. Al_2O_3/TiB_2/SiC_w陶瓷材料的高温氧化行为[J]. 中国腐蚀与防护学报, 1997, 17(2): 152-156.
. OXIDATION BEHAVIOR OF Al_2O_3/TiB_2/SiC_w CERAMICCOMPOSITES. J Chin Soc Corr Pro, 1997, 17(2): 152-156.

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https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1997/V17/I2/152

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