Preparation of 3D Cf/ZrC-SiC composites by joint processes of PIP and RMI

被引：59
作者：
Jiang, Jinming [1 ]
Wang, Song [1 ]
Li, Wei [1 ]
Chen, Zhaohui [1 ]
Zhu, Yulin [1 ]
机构：
[1] Natl Univ Def Technol, Sci & Technol Adv Ceram Fibers & Composites Lab, Changsha 410073, Hunan, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 607卷
基金：
中国国家自然科学基金;
关键词：
EDS; Mechanical characterization; Composite; ZrC-SiC; Liquid metal infiltration; REACTIVE MELT INFILTRATION; MECHANICAL-PROPERTIES; ABLATION BEHAVIORS; ZRC COMPOSITES; MICROSTRUCTURE; FABRICATION; POLYCARBOSILANE;
D O I：
10.1016/j.msea.2014.03.071
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Three-dimensional carbon fiber zirconium carbide-silicon carbide composite (3D C-f/ZrC-SiC) was prepared by precursor infiltration and pyrolysis (PIP) with reactive melt infiltration (RMI) process. The 3D C-f/C-SiC substrate with open porosity of 20% and density of 1.35 g/cm(3) was designed to be infiltrated by Zr0.912Si0.088 intermetallic compound. Thermodynamics calculations revealed that C could react with liquid Zr0.912Si0.088 to form ZrC at 1600 degrees C. Composites were prepared by heating the two materials to 1600 degrees C for 1 h in vacuum. The micro-structural, mechanical and ablative properties of the 3D C-f/ZrC-SiC composite were studied. ZrC and SiC were identified to be the main constituents. The flexural strength of the composite was 101.5 +/- 8.16 MPa and the elastic modulus was 35.18 +/- 9.58 GPa. The mass loss rate and linear recession rate of the 3D C-f/ZrC-SiC composite during oxyacetylene torch test were 0.013 g/s and 0.022 mm/s, respectively. The formation of ZrO2 melt on the surface of the composite contributed mainly to the excellent ablative property. (C) 2014 Elsevier B.V. All rights reserved.
引用
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页码：334 / 340
页数：7
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