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于文臻,黄河,王占雷,严俊,叶小球,王雪峰,罗林龄,冯春蓉,李冰清,饶咏初,肖瑶.钨粉中驻留氘去除技术研究[J].稀有金属材料与工程(英文),2020,49(11):3932~3937.[YU Wenzhen,HUANG He,WANG Zhanlei,YAN Jun,YE Xiaoqiu,WANG Xuefeng,Luo Linling,FENG Chunrong,LI Bingqing,RAO Yongchu and XIAO Yao.Study on Deuterium Removal Technology in Tungsten Powder[J].Rare Metal Materials and Engineering,2020,49(11):3932~3937.]
Study on Deuterium Removal Technology in Tungsten Powder
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Received:November 28, 2019  Revised:December 11, 2019
DOI:
Key words: Tungsten  Deuterium  Thermal Desorption  Isotope Exchange
Foundation item:国家磁约束核聚变能发展研究专项课题(2015GB109002、2018YFE0312400)
Author NameAffiliation
YU Wenzhen,HUANG He,WANG Zhanlei,YAN Jun,YE Xiaoqiu,WANG Xuefeng,Luo Linling,FENG Chunrong,LI Bingqing,RAO Yongchu and XIAO Yao  
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Abstract:
      Tungsten is the material of choice for the first wall of magnetically constrained thermonuclear fusion reactors. The retention and effective removal of hydrogen isotopes in tungsten-based materials is of great significance for the damage assessment of materials under the conditions of fusion reactors and the placement of hydrogen isotope fuels. In order to eliminate the influence of the geometrical factors of bulk tungsten in the study of hydrogen isotope retention and effective removal, the work of hydrogen isotope retention and effective removal was carried out in this work, using thermal desorption and isotope exchange. By using these two methods, the deuterium retained in powder tungsten has been removed, and the residual amount, desorption characteristic peak and solid solubility of the tungsten powder in the two methods were obtained. The results show that the two removal methods have obvious removal effects on the three types of lanthanum residing in tungsten powder; the time and conditions for the two removal methods to reach equilibrium are different; the isotope exchange is more effective than the thermal desorption. However, its operation is more difficult, and the thermal desorption method has a greater advantage.