Fabrication and characterization of 3-D Cf/ZrC composites by low-temperature liquid metal infiltration

被引：18

作者：

Zhu, Yulin ^{[1
]}

Wang, Song ^{[1
]}

Chen, Hongmei ^{[1
,2
]}

Li, Wei ^{[1
]}

Chen, Zhaohui ^{[1
]}

机构：

[1] Natl Univ Def Technol, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410073, Hunan, Peoples R China

[2] Hunan Int Econ Univ, Dept Mech Engn, Changsha 410205, Hunan, Peoples R China

来源：

COMPOSITES PART B-ENGINEERING | 2014年 / 56卷

基金：

中国国家自然科学基金;

关键词：

3-Dimensional reinforcement; Liquid metal infiltration; Microstructure; Mechanical properties; REACTIVE MELT INFILTRATION; RELATIVE LOW-TEMPERATURE; CARBON/CARBON COMPOSITES; ZIRCONIUM CARBIDE; ZRC; ABLATION; MICROSTRUCTURE; BEHAVIOR; POROSITY;

D O I：

10.1016/j.compositesb.2013.09.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three-dimensional braided carbon fiber-reinforced ZrC matrix composite, 3-D C-f/ZrC, were prepared by liquid metal infiltration process at 1200 degrees C using a Zr2Cu intermetallic compound as infiltrator. The microstructure and properties of the composites were investigated. The results indicated that ZrC with a yield of 35.2 +/- 1.8 vol.% was certified as the major phase of the composites. The formation of ZrC was controlled by a solution-precipitation mechanism. The obtained composites exhibited good mechanical properties, with a flexural strength of 293.0 +/- 12.1 MPa, a flexural modulus of 82.7 +/- 6.4 GPa and a fracture toughness of 9.8 +/- 0.9 MPa m(1/2). The mass and linear ablation rates of the composites exposed to oxyacetylene torch were 0.0013 +/- 0.0005 g s(-1) and 0.0009 +/- 0.0003 mm s(-1), respectively. The formation of a dense ZrO2 protective layer and the evaporation of residual Cu contributed mainly to the excellent ablation resistance. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：756 / 761

页数：6

共 20 条

[1] The combined effect of porosity and reactivity of the carbon preforms on the properties of SiC produced by reactive infiltration with liquid Si [J].