3D Cf/SiC-ZrC-ZrB2 composites fabricated via sol-gel process combined with reactive melt infiltration

被引：54

作者：

Chen, Xiaowu ^{[1
,2
,3
]}

Dong, Shaoming ^{[1
,2
]}

Kan, Yanmei ^{[1
,2
]}

Zhou, Haijun ^{[1
,2
]}

Hu, Jianbao ^{[1
,2
]}

Wang, Dengke ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, Struct Ceram & Composites Engn Res Ctr, Shanghai 200050, Peoples R China

[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2016年 / 36卷 / 15期

基金：

中国国家自然科学基金;

关键词：

UHTCs; Composites; Reactive melt infiltration (RMI); Sol-gel; Oxidation and ablation resistance; F/ZRC-SIC COMPOSITES; CERAMIC-MATRIX COMPOSITES; ABLATION BEHAVIORS; ZRC COMPOSITES; MICROSTRUCTURE; RESISTANCE; OXIDATION;

D O I：

10.1016/j.jeurceramsoc.2016.04.011

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：

Three-dimensional (3D) C-f/SiC-ZrC-ZrB2 composites were successfully fabricated by sol-gel process combined with reactive melt infiltration (RMI) method. With H3BO3 and PVA as raw materials for gel precursor, a porous C-B4C matrix was first introduced into the 3D carbon fiber preform by impregnation of the gel precursor, followed by heat-treatments of pyrolysis and carbothermal processes at 1500 degrees C in Ar atmosphere. Then molten ZrSi2 alloys were infiltrated into the 3D C-f/C-B4C preform to obtain 3D C-f/SiC-ZrC-ZrB2 composites. Based on thermodynamic analysis, the formation mechanism of SiC-ZrC-ZrB2 matrix was revealed. Oxidation resistance and ablation resistance properties of the fabricated 3D C-f/SiC-ZrC-ZrB2 composites were tested using a muffle furnace and a plasma wind tunnel equipment, respectively. The flexural strength of the as prepared composites and its strength retention after oxidation were evaluated. It is revealed that the 3D C-f/SiC-ZrC-ZrB2 composites showed superior flexural strength, good oxidation resistance and excellent anti-ablation properties. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：3607 / 3613

页数：7

共 27 条

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