Al2O3/Al Composites Fabricated by the Reaction of SiO2 Glass Powder with Molten Aluminum in Situ

Cheng Xiaomin  Tao Yinglong  Zhang Lianmeng

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Al₂O₃/Al Composites Fabricated by the Reaction of SiO₂ Glass Powder with Molten Aluminum in Situ
Issue 4, Pages: 8-9(2003)
Published： 2003 ，
DOI：

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[1]程晓敏,,,,,,,,,,陶应龙,,,,,,,,,,张联盟,,,,,,,,,,陈铁群.SiO_2与液态Al反应生成Al_2O_3/Al复合材料的研究[J].特种铸造及有色合金,2003(04):8-9+67.

Cheng Xiaomin Tao Yinglong Zhang Lianmeng. Al₂O₃/Al Composites Fabricated by the Reaction of SiO₂ Glass Powder with Molten Aluminum in Situ. [J]. Special Casting & Nonferrous Alloys (4):8-9(2003)
[1]程晓敏,,,,,,,,,,陶应龙,,,,,,,,,,张联盟,,,,,,,,,,陈铁群.SiO_2与液态Al反应生成Al_2O_3/Al复合材料的研究[J].特种铸造及有色合金,2003(04):8-9+67. DOI：

Cheng Xiaomin Tao Yinglong Zhang Lianmeng. Al₂O₃/Al Composites Fabricated by the Reaction of SiO₂ Glass Powder with Molten Aluminum in Situ. [J]. Special Casting & Nonferrous Alloys (4):8-9(2003) DOI：

摘要

采用SiO2 粉与液态Al反应制备Al2 O3 /Al复合材料

讨论了SiO2 的加入量、反应温度、反应时间对反应速度的影响

分析了不同反应温度和保温时间下生成复合材料的微观结构。试验证明 :当SiO2 含量较低时

SiO2 与Al发生完全反应

形成均匀Al2 O3 /Al复合层 ;当w（SiO2 ）达一定量时

反应速度反而降低 ;保温时间为 6～ 8h

反应速度最快

之后变慢

Abstract

Al 2 O 3 /Al Si composites were fabricated by the reaction of SiO 2 glass powder with molten aluminum. Effects of SiO 2 addition

reaction temperature and time on reaction speed were investiga ted. The microstructure of the composites were observed at various reaction temp eratures and holding times. It was found that SiO 2 fully reacted with Al t o generate uniform Al 2 O 3 /Al compound layer with lower SiO 2 add ition while reaction speed decreased with higher SiO 2 addition. The fastes t reaction speed occurred at holding time for 6～8 h

subsquently decreased. Com pound layer greatly increased with the increase in reaction temperature.

关键词

原位反应SiO2Al2O3/Al复合材料

Keywords

In situ ReactionSiO 2Al 2 O 3 /Al Composites in Situ

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