Preparation of ZrC-SiC Multi-coating on Graphite with ZrSiO4 Powder via Pack Cementation

被引：7

作者：

Yang Xin ^{[1
]}

Huang Qi-Zhong ^{[1
]}

Chang Xin ^{[1
]}

Su Zhe-An ^{[1
]}

Zhang Ming-Yu ^{[1
]}

Zhou Le-Ping ^{[1
]}

Jin Gu-Yin ^{[1
]}

机构：

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

来源：

JOURNAL OF INORGANIC MATERIALS | 2010年 / 25卷 / 01期

关键词：

graphite; anti-oxidation coating; ZrC; SiC; DEPOSITION; GROWTH; FABRICATION; MECHANISM; CARBON;

D O I：

10.3724/SP.J.1077.2010.00041

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 the oxidation resistance of graphite at high temperature, a dense ZrC-SiC multicoating wits prepared on graphite with ZrSiO4 powder by pack cementation. The structure and morphology of the multi-coating were characterized by XRD, SEM and EDS analysis, and the formation of the coating was discussed With thermodynamics calculation. The results show that the coating has a double-layer structure, which consists of SiC-rich inner layer and ZrC out layer. Besides ZrC and SiC phases, SiC crystals are also formed lit the coating. The formation of the double-layer structure is primarily attributed to the different generation temperatures of the reductive products lit the system, and the dense structure of the multi-coating Can be obtained due to the excellent flowing and filling ability of the liquid Zr formed lit the preparation process.

引用

页码：41 / 46

页数：6

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