Fabrication of （Al<sub>2</sub>O<sub>3</sub>）/Al Composites by In-situ Reaction Method

Meng Fanqin  Chen Xiaomin  Zhang Shiquan

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Fabrication of （Al₂O₃）/Al Composites by In-situ Reaction Method
Issue 4, Pages: 63-64(2004)
Published： 2004 ，
DOI：

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[1]孟繁琴,,,,,,,,,程晓民,,,,,,,,,胡斌,,,,,,,,,陈宏涛.原位反应法制备Al_2O_3/Al基复合材料的研究[J].特种铸造及有色合金,2004(04):63-64+80.

Meng Fanqin Chen Xiaomin Zhang Shiquan. Fabrication of （Al₂O₃）/Al Composites by In-situ Reaction Method. [J]. Special Casting & Nonferrous Alloys (4):63-64(2004)
[1]孟繁琴,,,,,,,,,程晓民,,,,,,,,,胡斌,,,,,,,,,陈宏涛.原位反应法制备Al_2O_3/Al基复合材料的研究[J].特种铸造及有色合金,2004(04):63-64+80. DOI：

Meng Fanqin Chen Xiaomin Zhang Shiquan. Fabrication of （Al₂O₃）/Al Composites by In-situ Reaction Method. [J]. Special Casting & Nonferrous Alloys (4):63-64(2004) DOI：

摘要

利用原位反应制备了（Al2 O3 ） p/Al复合材料

生成Al2 O3 颗粒分散度大

无聚集或偏聚现象

分布均匀。通过对反应所得材料的显微组织分析

（Al2 O3 ） p 与基体结合良好

界面无其他新相产生。试验证明 :利用原位反应制备（Al2 O3 ） p/Al复合材料

抗拉强度提高了 2 5 .6%

而伸长率仅下降了 9%

在试验中加入Al2 （SO4） 3 熔剂不仅细化Al2 O3 陶瓷颗粒

而且还起到辅助精炼和分散陶瓷相作用

Abstract

The （Al 2O 3）/Al composites were prepared by in situ reaction method. The generated uniformly distributed Al 2O 3 particle possessed large dispersitity without accumulation or segregation. The analysis of microstructure of prepared composites showed that （Al 2O 3） P and matrix were well bonded and appeared no of new phase in interface. It is found that the tensile strength of the composites was increased by 25.6% while the elongation was only decreased by 9%. The addition of Al 2（SO 4） 3 can not only refine Al 2O 3 particles but also fovor refinement and dispersion of ceramic phase.