Exposure of W-TiC/Cu Functionally Graded Materials in the Edge Plasma of HT-7 Tokamak

LIU Yang(刘洋); ZHU Dahuan(朱大焕); CHEN Junling(陈俊凌); ZHOU Zhangjian(周张健); YAN Rong(鄢容)

doi:10.1088/1009-0630/14/2/18

Plasma Science and Technology > 2012 > 14(2): 177-180. > DOI: 10.1088/1009-0630/14/2/18

LIU Yang(刘洋), ZHU Dahuan(朱大焕), CHEN Junling(陈俊凌), ZHOU Zhangjian(周张健), YAN Rong(鄢容). Exposure of W-TiC/Cu Functionally Graded Materials in the Edge Plasma of HT-7 Tokamak[J]. Plasma Science and Technology, 2012, 14(2): 177-180. DOI: 10.1088/1009-0630/14/2/18

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Exposure of W-TiC/Cu Functionally Graded Materials in the Edge Plasma of HT-7 Tokamak

1 Institute of plasma physics, Chinese academy of sciences, Hefei 230031, China 2 University of Science and Technology Beijing, Beijing 100083, China

Funds: supported by National Natural Science Foundation of China (No.11175205)

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Received Date: August 05, 2011

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Abstract

Abstract

Six-layered W-TiC/Cu functionally graded materials were fabricated by resistance sintering under ultra-high pressure and exposed in the edge plasma of HT-7 tokamak. Microstructure morphologies show that the TiC particles distribute homogeneously in the W matrix, strengthening the grain boundary, while gradient layers provide a good compositional transition from W-TiC to Cu. After about 360 shots in the HT-7 tokamak, clear surface modification can be observed after plasma exposure, and the addition of nano TiC particles is beneficial to the improvement of plasma loads resistance of W.
- W-TiC,
- Resistance sintering,
- HT-7 tokamak,
- plasma exposure

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