An ingenious approach of determining hydrogen isotope solubilities, diffusivities and permeabilities in GWHER-1 stainless steel

作者：Chen Zhi^*; Deng Bai Quan; Peng Li Lin; Feng Kai Ming; Du Jia Ju; Mao Ou

来源：Chinese Physics, 2006, 15(7): 1492-1496.

• hydrogen isotope
• vacuum heating degassing
• GWHER-1 stainless steel
• transport properties

In this paper, by using an ingenious method, the hydrogen isotope solubilities and diffusivities in GWHER-1 stainless steel have been determined by a vacuum heating degassing approach at the temperature range of 597-1022 K on a set of specimens with different sizes previously charged for 24 h under a hydrogen isotope pressure of 10(5) Pa in the temperature range of 800-1000 K. The permeabilities are then derived from the relation phi = DKs. It is found D = 1.52 x 10(-6) exp(-54100/RT), K-s = 2.2 x 10(-6)exp(-5400/RT) and F = 3.3 x 10(-12) exp(-59500/RT) for hydrogen, where Ks (Sieverts' constant) is given in Pa-1/2, D in m(2.)s(-1.)Pa(-1/2), T in K and R= 8.31J(.)mol(-1.)K(-1). By taking isotope effects into account, the corresponding Arrhenius relations for deuterium and tritium are also deduced.

• 出版日期2006-7
• 单位核工业西南物理研究院