Erosion research of CX-2002U carbon composites under low-temperature high-flux hydrogen plasma  

作　　者：Hengxin GUO Zongbiao YE Bizhou SHEN Jianjun WEI Bo WANG Yuchuan LUO Kun ZHANG Fujun GOU Jianjun CHEN Bo CHEN 郭恒鑫;叶宗标;沈必舟;韦建军;王博;罗玉川;张坤;芶富均;陈建军;陈波(Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610064,People's Republic of China;Institute of Nuclear Science and Technology,Sichuan University,Chengdu 610064,People's Republic of China)

机构地区：[1]Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610064,People's Republic of China [2]Institute of Nuclear Science and Technology,Sichuan University,Chengdu 610064,People's Republic of China

出　　处：《Plasma Science and Technology》2021年第2期93-100,共8页等离子体科学和技术（英文版）

基　　金：by National Natural Science Foundation of China(No.11875198);Young Scientists Fund of National Natural Science Foundation of China(No.11905151);Fundamental Research Funds for the Central Universities of China(No.2019SCU12072);the China Postdoctoral Science Foundation(No.2019M663487).

摘　　要：The net erosion yield of CX-2002U carbon fiber composites under high-flux low-temperature hydrogen plasma is investigated using a linear plasma device.It is found that the net erosion yield decreases rapidly first,and then tends to saturate with the increase of hydrogen–plasma flux.When the temperature of the sample eroded by hydrogen plasma is above 300°C,the hybridization of electrons outside the carbon atom would change.Then the carbon atoms combine with hydrogen atoms to form massive spherical nanoparticles of hydrocarbon compounds and deposit on the surface at the flux condition of 1.77×10^(22) m^(−2)·s^(−1).Under the irradiation of hydrogen plasma loaded with negative bias,the surface morphology of the matrix carbon is changed dramatically.Moreover,the energy dependence of mass loss does not increase in proportion to the increase of hydrogen–plasma energy,but reaches a peak around 20 V negative bias voltage.Based on the analysis of different samples,it can be concluded that the enhancement of energy could make a contribution to chemical erosion and enlarge the size of pores existing on the surface.

关 键 词：carbon fiber composites hydrogen plasma chemical erosion REDEPOSITION NANOPARTICLE 

分 类 号：TB332[一般工业技术—材料科学与工程]