1. Institute of Plasma Physics Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei 230031 China; 2. University of Science and Technology of China Hefei 230026 China
Abstract B4C was proposed as a material of in-situ protecting coating to avoid damages like erosion, cracking and particle emission on tungsten tiles of tokamak plasma facing components. This study involved the fabrication and adhesion testing of inductively coupled plasma (ICP) plasma sprayed B4C coating on tungsten (W) substrate. Coating optimization for B4C on different spray distances was performed. Adhesion test result reveals the tendency of the coating adhesion strength, which increases along with the increasing spray distance. The adhesion strength of the coating on optimized conditions is 5.32MPa. Coatings characterization was presented with scanning electron microscope (SEM) analysis, which further proves the result of adhesion strength. Phase and composition analyses show that the main phase and chemical composition of the boron carbide coating is not changed after ICP torch treatment.
Zhou Qiujiao,Zhao Peng,Guo Qijia等. Effect of Spray Distance to the Adhesion Strength of Inductively Coupled Plasma Sprayed B4C/W Coating[J]. Transactions of China Electrotechnical Society, 2019, 34(6): 1345-1350.
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2019, Vol. 34 
