Influence of atmosphere and carbon contamination on activated pressureless infiltration of alumina-steel composites

被引：11

作者：

Bahraini, M. ^{[1
]}

Schlenther, E. ^{[2
]}

Kriegesmann, J. ^{[2
]}

Graule, T. ^{[1
]}

Kuebler, J. ^{[1
]}

机构：

[1] Empa, Swiss Fed Labs Mat Testing & Res, Lab High Performance Ceram, CH-8600 Dubendorf, Switzerland

[2] Fachhsch Koblenz, D-56203 Hohr Grenzhausen, Germany

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2010年 / 41卷 / 10期

关键词：

Metal-matrix composites (MMC); Liquid metal infiltration; Inert atmosphere; METAL-MATRIX COMPOSITES; MICROSTRUCTURE; SILICON;

D O I：

10.1016/j.compositesa.2010.06.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Al2O3/steel metal-matrix composites (MMCs) were fabricated by activated pressureless infiltration at atmospheric pressure in different gas atmospheres: N-2, Ar and Ar-5%H-2. The infiltration quality was evaluated with examination of the microstructure, infiltrated area and remaining porosity. The atmosphere with the best infiltration quality was chosen for improvement of infiltration by varying infiltration parameters such as temperature, holding time and heating and cooling rates. Further improvement was achieved by addition of Si or SiO2 powder to the preform in order to reduce the effect of the residual carbon. The results show that the activated melt infiltration can be successfully done at atmospheric pressure in inert gas. (c) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1511 / 1515

页数：5

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