Mechanical and physical behaviors of short pitch-based carbon fiber-reinforced HfB2-SiC matrix composites

被引：60

作者：

Guo, Shuqi ^{[1
]}

Naito, Kimiyoshi ^{[1
]}

Kagawa, Yutaka ^{[1
,2
]}

机构：

[1] Natl Inst Mat Sci, Hybrid Mat Unit, Tsukuba, Ibaraki 3050047, Japan

[2] Univ Tokyo, Res Ctr Adv Sci & Technol, Meguro Ku, Tokyo 1538505, Japan

来源：

CERAMICS INTERNATIONAL | 2013年 / 39卷 / 02期

关键词：

Composites; Electrical conductivity; Mechanical properties; Thermal conductivity; THERMAL-CONDUCTIVITY; TEMPERATURE; CERAMICS;

D O I：

10.1016/j.ceramint.2012.07.108

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Short Pitch-based carbon fiber-reinforced HfB2 matrix composites containing 20 vol% SiC, with fiber volume fractions in the range of 20-50%, were manufactured by hot-press process. Highly dense composite compacts were obtained at 2100 degrees C and 20 MPa for 60 min. The flexural strength of the composites was measured at room temperature and 1600 degrees C. The fracture toughness, thermal and electrical conductivities of the composites were evaluated at room temperature. The effects of fiber volume fractions on these properties were assessed. The flexural strength of the composites depended on the fiber volume fraction. In addition, the flexural strength was significantly greater at 1600 degrees C than at room temperature. The fracture toughness was improved due to the incorporation of fibers. The thermal and electrical conductivities decreased with the increase of fiber volume fraction, however. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：1567 / 1574

页数：8

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