Manufacturing and High Heat Flux Testing of Brazed Flat-Type W/CuCrZr Plasma Facing Components

LIAN Youyun (练友运); LIU Xiang (刘翔); FENG Fan (封范); CHEN Lei (陈蕾); CHENG Zhengkui (程正奎); WANG Jin (王金); CHEN Jiming (谌继明)

doi:10.1088/1009-0630/18/2/15

Plasma Science and Technology > 2016 > 18(2): 184-189. > DOI: 10.1088/1009-0630/18/2/15

LIAN Youyun (练友运), LIU Xiang (刘翔), FENG Fan (封范), CHEN Lei (陈蕾), CHENG Zhengkui (程正奎), WANG Jin (王金), CHEN Jiming (谌继明). Manufacturing and High Heat Flux Testing of Brazed Flat-Type W/CuCrZr Plasma Facing Components[J]. Plasma Science and Technology, 2016, 18(2): 184-189. DOI: 10.1088/1009-0630/18/2/15

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Manufacturing and High Heat Flux Testing of Brazed Flat-Type W/CuCrZr Plasma Facing Components

Center for Fusion Science, Southwestern Institute of Physics, Chengdu 610041, China

Funds: supported by National Natural Science Foundation of China (No. 11205049) and the National Magnetic Confinement Fusion Science Program of China (No. 2011GB110004)

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Received Date: February 12, 2015

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Abstract

Abstract

Water-cooled flat-type W/CuCrZr plasma facing components with an interlayer of oxygen-free copper (OFC) have been developed by using vacuum brazing route. The OFC layer for the accommodation of thermal stresses was cast onto the surface of W at a temperature range of 1150^oC-1200^oC in a vacuum furnace. The W/OFC cast tiles were vacuum brazed to a CuCrZr heat sink at 940^oC using the silver-free filler material CuMnSiCr. The microstructure, bonding strength, and high heat flux properties of the brazed W/CuCrZr joint samples were investigated. The W/Cu joint exhibits an average tensile strength of 134 MPa, which is about the same strength as pure annealed copper. High heat flux tests were performed in the electron beam facility EMS-60. Experimental results indicated that the brazed W/CuCrZr mock-up experienced screening tests of up to 15 MW/m² and cyclic tests of 9 MW/m² for 1000 cycles without visible damage.
- W/CuCrZr mock-up,
- vacuum casting,
- vacuum brazing,
- high heat flux tests

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References

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