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

被引：11
|
作者：
Lian Youyun [1 ]
Liu Xiang [1 ]
Feng Fan [1 ]
Chen Lei [1 ]
Cheng Zhengkui [1 ]
Wang Jin [1 ]
Chen Jiming [1 ]
机构：
[1] Southwestern Inst Phys, Ctr Fus Sci, Chengdu 610041, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2016年 / 18卷 / 02期
基金：
中国国家自然科学基金;
关键词：
W/CuCrZr mock-up; vacuum casting; vacuum brazing; high heat flux tests; ITER DIVERTOR; TUNGSTEN; PERFORMANCE;
D O I：
10.1088/1009-0630/18/2/15
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
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 degrees C-1200 degrees C in a vacuum furnace. The W/OFC cast tiles were vacuum brazed to a CuCrZr heat sink at 940 degrees C 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/m(2) and cyclic tests of 9 MW/m(2) for 1000 cycles without visible damage.
引用
收藏
页码：184 / 189
页数：6
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