Microstructure and Strength of Al_2O_3/Al_2O_3 Joints Bonded with ZnO-Al_2O_3-B_2O_3_SiO_2 GlasseCeramic
查看参考文献17篇
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文摘
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ZnO-Al_2O_3-B_2O_3-SiO_2 (ZABS) glass powder was used as interlayer to join alumina ceramics. The effect of joining temperature on the microstructure and strength of joints was investigated. The results showed that the ZABS glass can react with alumina substrate to form a layer of ZnAl_2O_4 at Al_2O_3/glass interface. Bending test exhibited that low joining temperature (1150 °C) led to low joint strength due to the formation of pores in the interlayer, originated by high viscosity of the glass. High joining temperature (1250 °C) also resulted in low joint strength, because of large CTE (coefficient of thermal expansion) mismatch between amorphous interlayer and alumina substrate. Therefore, only when the joining temperature was appropriate (1200 °C), defect-free interface and high joint strength can be obtained. The optimum joint strength reached 285 MPa, which was the same as the base material strength. |
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来源
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Journal of Materials Science & Technology
,2014,30(9):944-948 【核心库】
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DOI
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10.1016/j.jmst.2014.01.011
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关键词
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Alumina
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Joining
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Glasseceramic
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Microstructure
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Strength
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地址
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Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1005-0302 |
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学科
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金属学与金属工艺 |
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基金
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support within framework FP7 for the CACHET 2 project
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文献收藏号
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CSCD:5244062
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