A study of fiber coating in Al2O3 fiber-reinforced NiAlFe matrix composites

被引：19

作者：

Chiu, HP ^{[1
]}

Yang, JM ^{[1
]}

Amato, RA ^{[1
]}

机构：

[1] GE CO,AIRCRAFT ENGINES,CINCINNATI,OH 45125

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1995年 / 203卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

fiber coating; NiAlFe matrix composites; Al2O3;

D O I：

10.1016/0921-5093(95)09846-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effectiveness of using oxide coating to modify the interface in the Al2O3 fiber-reinforced NiAlFe matrix composites was studied. ZrO2, Y2O3-stabilized ZrO2, and yttrium aluminum garnet (i.e. Y3Al5O12) coatings were applied onto the Al2O3 fibers by the sol-gel process, and the composites with Various coated fibers were consolidated by using a tape-casting/hot isostatic pressing technique. The interface morphology and integrity of the coating layer, as well as the chemical compatibility and thermal stability with the matrix were characterized by scanning electron microscopy, energy dispersive spectroscopy, and scanning Auger electron spectroscopy. Transverse tensile and flexural strengths of the uncoated and coated composites were determined at 980 degrees C and room temperature, respectively, to evaluate the effect of coating on their mechanical properties and failure behavior. Critical issues on tailoring a functional interface using fiber coatings to control interdiffusion between the fiber and matrix, and improving the mechanical behavior of the Al2O3/NiAlFe composite were discussed.

引用

页码：81 / 92

页数：12

共 40 条

[21] APPLICATION OF CHEMICAL VAPOR-DEPOSITED YTTRIA FOR THE PROTECTION OF SILICON-CARBIDE FIBERS IN A SIC/NI3AL COMPOSITE [J].