对铜基体上真空等离子体喷涂1 mm的钨涂层进行了分析研究,主要包括微观结构、热力学属性以及成分分析.结果显示,钨涂层气孔率仅为7.6%,室温热导率达到79.7 W/(m·K),W/Cu结构界面结合强度高达45 MPa,这些结果对钨作为聚变装置面对等离子体材料的应用是令人鼓舞的.涂层材料的出气性能也是面对等离子材料的一个重要指标,钨涂层出气气体种类主要是氢气和水蒸气.而且在300℃经过4 h高温烘烤后出气率大幅度降低,更长时间的烘烤则对出气率影响不是太明显.因此可以看出钨涂层作为聚变装置面对等离子体材料的应用是可行的.
The characterization of 1 mm W coating on copper alloys by means of vacuum plasma spraying technology was investigated, including microstructure, thermal properties, mechanical properties, and chemical composition. W coating MPa was obtained. These results are interesting for plasma spraying W coating used as plasma facing material. Besides, the gas desorption property of W coating was performed. H<,2> was the gas species with the largest desorption rate, then H2O. The gas desorption rate remarkably decreased after baking for 4 hours at 300℃, and it became not much changed after further baking. Therefore, it can be concluded that tungsten coating used as plasma facing material is feasible.
参考文献
| [1] | Kang HK .Thermal properties of plasma-sprayed tungsten deposits[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2004(1):1-4. |
| [2] | K.Tokunaga;N.Yoshida;Y.Kubota .High heat flux test of actively cooled tungsten-coated carbon divertor mock-ups[J].Fusion engineering and design,2000(0):371-376. |
| [3] | Jiri Matejicek;Yoshie Koza;Vladimir Weinzettl .Plasma sprayed tungsten-based coatings and their performance under fusion relevant conditions[J].Fusion engineering and design,2005(1/4):395-399. |
| [4] | Riccardi B;Montanari R;Casadei M;Costanza G;Filacchioni G;Moriani A .Optimisation and characterisation of tungsten thick coatings on copper based alloy substrates[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2006(1/3):29-35. |
| [5] | Guo QG;Liu ZJ;Li JG;Noda N;Kubota Y;Liu L .High heat flux test of SiC coated doped graphite[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2007(0):1216-1220. |
| [6] | Y. Hirohata;M. Okegawa;H. Yanagihara;T. Hino;N. Ogiwara;J. Yagyu;M. Saidoh .Gas desorption properties of tungsten coated graphite materials[J].Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology,1999(1/2):309-312. |
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