Preparation of Al2O3p/Al-Si Composites with SiO2 by In-situ Synthesis

Zhang Ruiying1; Shi Zhiming1; Li Hongxia1

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Preparation of Al₂O_3p/Al-Si Composites with SiO₂ by In-situ Synthesis
Vol. 30, Issue 7, Pages: 668-671(2010)
Published： 2010 ，
DOI：

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[1]张瑞英,史志铭,李红霞.SiO_2原位制备Al_2O_(3P)/Al-Si复合材料[J].特种铸造及有色合金,2010,30(07):668-671+587.

Zhang Ruiying1, Shi Zhiming1, Li Hongxia1. Preparation of Al₂O_3p/Al-Si Composites with SiO₂ by In-situ Synthesis. [J]. Special Casting & Nonferrous Alloys 30(7):668-671(2010)
[1]张瑞英,史志铭,李红霞.SiO_2原位制备Al_2O_(3P)/Al-Si复合材料[J].特种铸造及有色合金,2010,30(07):668-671+587. DOI：

Zhang Ruiying1, Shi Zhiming1, Li Hongxia1. Preparation of Al₂O_3p/Al-Si Composites with SiO₂ by In-situ Synthesis. [J]. Special Casting & Nonferrous Alloys 30(7):668-671(2010) DOI：

摘要

采用液相接触法

以SiO2为原材料制备了Al2O3P/Al-Si复合材料

利用OM

SEM

XRD等分析了复合材料的组织、生成的相以及相的大小、形状与分布。结果表明

Al2O3颗粒主要分布在晶界处Al-Si共晶组织中

颗粒大小约为1μm。原位生成的Si与Al形成的共晶组织不再以针片状形式存在

而是呈粒状

尺寸为0.3～1.5μm。

Abstract

Al2O3p/Al-Si composites were prepared with SiO2 as raw materials by liquid phase contact reaction technique.Microstructure

constituent

size and shape as well as distribution of created phase in the prepared composites were investigated by OM （optical microscope）

SEM （scanning electron microscope） and XRD （X-ray diffraction）.The results reveal that Al2O3 particle with approximately 1 μm in size is mainly distributed in the Al-Si eutectic structure at grain boundary.In-situ Al-Si eutectic phase with 0.3～1.5μm in size exists in particle instead of in needle structure.