Enhanced oxidation properties of ZrB2-SiC composite with short carbon fibers at 1600°C

被引：29

作者：

He, Linkai ^{[1
,3
]}

Sun, Youhong ^{[1
,2
,3
]}

Meng, Qingnan ^{[1
,3
]}

Liu, Baochang ^{[1
,3
]}

Wu, Jinhao ^{[1
,3
]}

Zhang, Xuliang ^{[1
,3
]}

机构：

[1] Jilin Univ, Coll Construct Engn, Changchun 130026, Peoples R China

[2] China Univ Geosci, Beijing 100083, Peoples R China

[3] Minist Nat Resources, Key Lab Drilling & Exploitat Technol Complex Cond, Changchun 130061, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2021年 / 47卷 / 11期

关键词：

ZrB2-SiC-C-f ceramic composites; Oxidation behavior; Barrier mechanism; Partial reduction; THERMAL-SHOCK RESISTANCE; HIGH TEMPERATURE CERAMICS; HOT-PRESSING PARAMETERS; MECHANICAL-PROPERTIES; ZRB2-BASED COMPOSITES; ABLATION PROPERTIES; MICROSTRUCTURE; BEHAVIOR; DENSIFICATION; CARBIDE;

D O I：

10.1016/j.ceramint.2021.02.114

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：

This study investigated the effect of short carbon fiber (C-f) on the oxidation behavior of ZrB2-SiC composites with fiber volume fractions in the range of 0-20%. Precisely, highly dense composite compacts were manufactured by hot-press process at 2000 degrees C and 30 MPa for 60min. The addition of C-f increased the relative density of sintered composite The oxidation treatment at 1600 degrees C in air tube furnace for 0.5 h revealed that oxidation rate of ZrB2-SiC-C-f composites decreased from 292.4 mu m/h to 77.6 mu m/h (almost 73.5% decline), when the content of Cf changed from 0 to 20%. Moreover, C-f played important roles in blocking and deflecting oxygen diffusion during the oxidation process, which provided a local reduction environment of oxidation products.

引用

页码：15483 / 15490

页数：8

共 61 条

[1] Spark plasma sintering of quadruplet ZrB2-SiC-ZrC-Cf composites [J].