摘要
Hydrogen desorption behaviors of zirconium hydride at temperature range of 100-900 ℃ 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.
Hydrogen desorption behaviors of zirconium hydride at temperature range of 100-900 ℃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.
出处
《中国有色金属学会会刊：英文版》
CSCD
2007年第A02期945-948,共4页
Transactions of Nonferrous Metals Society of China
基金
Project(50674015) supported by the National Natural Science Foundation of China
关键词
氢化锆
气相分析
氢解吸附作用
氧化物
zirconium hydride
gas phase analysis（GPA）
hydrogen desorption
oxide scale
