Microstructure and thermal property of tungsten coatings prepared by vacuum plasma spraying technology

被引：46
作者：
Niu, Yaran [1 ,2 ]
Zheng, Xuebin [1 ,2 ]
Ji, Heng [1 ,2 ]
Qi, Lingjun [1 ]
Ding, Chuanxian [1 ,2 ]
Chen, Junling [3 ]
Luo, Guangnan [3 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
[2] Chinese Acad Sci, Key Lab Inorgan Coating Mat, Shanghai 200050, Peoples R China
[3] Chinese Acad Sci, Inst Plasma Phys, Hefei, Peoples R China
来源：
FUSION ENGINEERING AND DESIGN | 2010年 / 85卷 / 7-9期
关键词：
Vacuum plasma spraying; Tungsten coatings; Microstructure; Thermal property; FUSION APPLICATIONS; OXIDATION; BEHAVIOR; GRAPHITE;
D O I：
10.1016/j.fusengdes.2010.04.032
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
In the present work, tungsten coatings were deposited by vacuum plasma spraying technology and their microstructure and composition were characterized using SEM, XRD, TEM and EDS. Some basic properties of tungsten coating were detected and the thermal property of the coating was focused. The obtained results showed that the tungsten coating was consisted of well-melted particles overlapped each other and exhibited typical lamellar microstructure. Pores in line and irregular shapes and interfaces between layers were also observed. The thermal diffusivity of the as-received tungsten coating was about 47.7 mm(2) s(-1), which was lower than that of bulk tungsten. Gradient interlayer composed of tungsten and copper improved the bonding strength between the tungsten coating and copper alloy substrate. (C) 2010 Elsevier B.V. All rights reserved.
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页码：1521 / 1526
页数：6
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