Hydrogen desorption behaviors of zirconium hydride in oxygen containing atmosphere
Hydrogen desorption behaviors of zirconium hydride at temperature range of 100900 ℃ in mixture gases of helium and oxygen was studied by gas phase analysis(GPA).Meanwhile,the morphologies of the oxide scale formed on the surface of zirconium hydride were analyzed by scanning electron microscopy(SEM).The hydrogen desorption is retarded effectively when zirconium hydride is exposed to an oxygen containing atmosphere.Hydrogen desorption in mixed gas of helium and oxygen starts at 525 ℃ and reaches maximum at 660 ℃ and ends eventually at 800 ℃.No hydrogen desorption is found at the temperature range from 800 ℃ to 900 ℃.An oxide scale with approximately 20 μm in thickness formed on the surface of zirconium hydride acts as an effective diffusion barrier.
zirconium hydride gas phase analysis(GPA) hydrogen desorption oxide scale
CHEN Wei-dong WANG Jian-wei WANG Li-jun LU Shi-gang
Division of Mineral Resources,Metallurgy and Materials,General Research Institute for Nonferrous Metals,Beijing 100088,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）