High-temperature internal friction, stiffness and strength of Zr-Al(Si)-C ceramics

被引：36
|
作者：
He, L. F. [1 ,2 ]
Lu, X. P. [1 ,2 ]
Bao, Y. W. [1 ]
Wang, J. Y. [1 ]
Zhou, Y. C. [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
来源：
SCRIPTA MATERIALIA | 2009年 / 61卷 / 01期
关键词：
Carbide; TEM; Grain boundaries; Elastic behavior; Internal friction; LIQUID REACTION SYNTHESIS; SI-C CERAMICS; GRAIN-BOUNDARY; POLYCRYSTALLINE TI2ALC; ELASTIC PROPERTIES; OXIDATION; MICROSTRUCTURE; RELAXATION; VISCOSITY; ZR2AL3C4;
D O I：
10.1016/j.scriptamat.2009.03.004
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The temperature dependence of internal friction, stiffness and strength of Zr-Al(Si)-C ceramics was studied. For glass-free Zr-Al(Si)-C ceramics, the internal friction curve followed an exponential-like background. For liquid-phase-sintered Zr3Al3C5, an internal peak present at 1590 K revealed the grain-boundary sliding due to wetting of glass phase at grain boundaries and triple junctions. Zr-Al(Si)-C ceramics exhibited high degrees of stiffness and strength at high temperatures up to 1600 and 1400 degrees C, respectively, which render them good high-temperature structural materials. (c) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：60 / 63
页数：4
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