Effect of oxidation on the compressive strength of sintered SiC-fiber bonded ceramics

被引：7

作者：

Ramirez-Rico, Joaquin ^{[1
]}

Martinez-Fernandez, Julian ^{[1
]}

Singh, Mrityunjay ^{[2
]}

机构：

[1] Univ Seville, CSIC, Dpto Fis Mat Condensada, ICMS, Seville 41012, Spain

[2] Ohio Aerosp Inst, Cleveland, OH 44142 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 534卷

关键词：

Strength; Oxidation; Microstructure; Fiber bonded ceramic; Silicon carbide; 1D-SIC/C/SIC COMPOSITE-MATERIALS; TI-C-O; SIC/SIC COMPOSITES; POLYCRYSTALLINE FIBER; SILICON; MICROSTRUCTURE; VOLATILIZATION; MECHANISMS; KINETICS; BEHAVIOR;

D O I：

10.1016/j.msea.2011.11.085

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The compressive strength of SiC-fiber bonded ceramics obtained from hot-pressed amorphous Si-Al-C-O fibers and its degradation by high temperature exposure to an oxidizing environment was studied. Compressive strength was measured at room temperature as a function of strain rate, orientation, and oxidation temperature. Weight loss was monitored as a function of exposure time in atmospheric air at temperatures ranging from 800 to 1600 degrees C, for times ranging from 0.5 to 5 h. Room-temperature compressive strength had a moderate decrease after exposures at 800 degrees C associated to carbon burnout; increased for exposures in the range 1000-1500 degrees C due to a defect-blunting action of the silica scale; and decreased significantly at 1600 degrees C due to extensive surface recession. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：394 / 399

页数：6

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