A novel design of Al-Cr alloy surface sealing for ablation resistant C/C-ZrC-SiC composite

被引：36

作者：

Chang, Yabin ^{[1
]}

Sun, Wei ^{[1
]}

Xiong, Xiang ^{[1
]}

Chen, Zhaoke ^{[1
]}

Wang, Yalei ^{[1
]}

Hao, Zhenhua ^{[1
]}

Xu, Yonglong ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2017年 / 37卷 / 02期

基金：

美国国家科学基金会;

关键词：

C/C composite; Ultra-high temperature ceramics; Surface sealing; Al-Cr alloy; Ablation; REACTIVE MELT INFILTRATION; CARBON-CARBON COMPOSITES; RELATIVE LOW-TEMPERATURE; MECHANICAL-PROPERTIES; OXYACETYLENE FLAME; MICROSTRUCTURE; BEHAVIOR; PROTECTION; COATINGS; SYSTEM;

D O I：

10.1016/j.jeurceramsoc.2016.09.002

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：

To improve anti-ablation property of C/C-ZrC-SiC composite, a novel design of Al-Cr alloy surface sealing was performed by liquid melt impregnation. Results show that Al8Cr5 formed on the surface which could effectively seal the holes and cracks. The cooperation of metal and ceramics contribute a better anti ablation performance to the obtained composite, and its mass and linear ablation rates decrease by 98.3% and 81.2% respectively. This special surface structure evolves into a highly dense oxide scale comprising various solid solutions (including Al-Cr-O, Al-Si-O, Cr-Si-O) and ZrO2, which could significantly improve the anti-ablation performance of C/C-ZrC-SiC composite. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：859 / 864

页数：6

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