Manufacturing and High Heat Flux Testing of Brazed Flat-Type W/CuCrZr Plasma Facing Components |
| |
Affiliation: | Center for Fusion Science, Southwestern Institute of Physics, Chengdu 610041, China |
| |
Abstract: | Water-cooled flat-type W/Cu Cr Zr 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 1150oC-1200 oC in a vacuum furnace.The W/OFC cast tiles were vacuum brazed to a Cu Cr Zr heat sink at 940 oC using the silver-free filler material Cu Mn Si Cr.The microstructure,bonding strength,and high heat flux properties of the brazed W/Cu Cr Zr 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/Cu Cr Zr 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. |
| |
Keywords: | W/CuCrZr mock-up vacuum casting vacuum brazing high heat flux tests |
本文献已被 CNKI 万方数据 等数据库收录! |
| 点击此处可从《等离子体科学和技术》浏览原始摘要信息 |
|
点击此处可从《等离子体科学和技术》下载全文 |
|