Study on methods to strengthen SiC preforms for SiCp/Al composites by pressureless infiltration

被引：41

作者：

Shen, Xiaoyu ^{[1
]}

Ren, Shubin ^{[1
]}

He, Xinbo ^{[1
]}

Qin, Mingli ^{[1
]}

Qu, Xuanhui ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 468卷 / 1-2期

关键词：

Composite materials; Preforms; Mechanical properties; Thermal conductivity; Thermal expansion; METAL-MATRIX COMPOSITES; SILICON-CARBIDE; WATER GLASS; OXIDATION; MICROSTRUCTURE;

D O I：

10.1016/j.jallcom.2008.01.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The methods to strengthen SiC preforms for SiCp/Al composites fabricated by pressureless infiltration were studied in this paper. Three methods were used to strengthen debinding SiCp preforms prepared by ceramic injection molding, that is, the SiCp preforms by debinding were dipped with water glass or silica sol, respectively and were calcined in air. The results show that the ideal method is that the debinding SiCp preforms were dipped with 0.75 wt((SiO2))% water glass and then calcined at 800 degrees C for 40 min, at which, the strength of SiCp preforms can reach 3.9 MPa and the properties of prepared composites are hardly affected. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：158 / 163

页数：6

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