Effects of SiC Particle Oxidation on the Wettability and Interfacial Bonding of SiC<sub>p</sub>/Al Composites

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Effects of SiC Particle Oxidation on the Wettability and Interfacial Bonding of SiC_p/Al Composites
Vol. 30, Issue 11, Pages: 1062-1065(2010)
Published： 2010 ，
DOI：

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[1]王传廷,马立群,尹明勇,刘真云,丁毅,张华,陈育贵.SiC_p氧化处理对SiC_p/Al复合材料润湿性和界面结合的影响[J].特种铸造及有色合金,2010,30(11):1062-1065+979.

Effects of SiC Particle Oxidation on the Wettability and Interfacial Bonding of SiC_p/Al Composites. [J]. Special Casting & Nonferrous Alloys 30(11):1062-1065(2010)
[1]王传廷,马立群,尹明勇,刘真云,丁毅,张华,陈育贵.SiC_p氧化处理对SiC_p/Al复合材料润湿性和界面结合的影响[J].特种铸造及有色合金,2010,30(11):1062-1065+979. DOI：

Effects of SiC Particle Oxidation on the Wettability and Interfacial Bonding of SiC_p/Al Composites. [J]. Special Casting & Nonferrous Alloys 30(11):1062-1065(2010) DOI：

摘要

通过对SiCp在不同温度下的氧化处理

研究了颗粒氧化对搅拌铸造法制备的SiCp增强铝基复合材料的润湿性和界面结合的影响。结果表明

氧化处理后的颗粒表面形成了具有一定厚度的SiO2氧化层

该氧化层在高温下与铝熔体发生界面反应

从而有效地改善了颗粒与基体间的润湿性

提高了界面结合强度;所制备的复合材料颗粒分布均匀

界面结合良好;界面处有MgAl2O4、Mg2Si生成

没有发现有害界面反应产物Al4C3;复合材料的断裂方式为颗粒的断裂和颗粒从基体中的拔出。

Abstract

Effects of SiC particle oxidation on the wettability and interfacial bonding of SiCp/Al composites fabricated by stirring casting were analyzed based on oxidizing SiC particle at different temperatures.The results show that SiO2 oxidized layer is formed on the surface of SiC particle by oxidation treatment and reacted with the molten Al at high temperature

which improves the wettability of SiC particle with the molten Al by reducing the interface bonding energy and enhances the interfacial bonding strength.Particle with desirable bonding interface is uniformly distributed in the prepared composites.MgAl2O4

Mg2Si phase can be observed in the interface with the Al4C3 phase free.The fracture mechanism of the composites is characterized by particle crack and pull-out of particle from the matrix.