TRANSIENT ANALYSIS OF HYDROGEN PERMEATION THROUGH NICKEL MEMBRANES

被引:20
作者
KUHN, DK [1 ]
JOHNSON, HH [1 ]
机构
[1] CORNELL UNIV, ITHACA, NY 14853 USA
来源
ACTA METALLURGICA ET MATERIALIA | 1991年 / 39卷 / 11期
关键词
D O I
10.1016/0956-7151(91)90106-B
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The permeation of hydrogen through polycrystalline nickel membranes has been studied as a function of temperature, pressure, and membrane thickness. The steady state flux from gas phase charging experiments have been observed to obey an Arrhenius behaviour for temperature between 270 and 600 K. A value for the lattice diffusivitv of 3.57 x 10(-7) exp(-37.8 kJ . mol-1/RT) m2/s has been calculated using a time lag technique for hydrogen pressures and temperatures of 1-100 kPa and 370-600 K. The permeation transients have been found to be pressure dependent in the temperature range of 270-340 K. This pressure dependence has been associated with the trapping of hydrogen at internal defects sites in nickel. Using the time lag technique, a trap density of 2.2 x 10(23) sites/m3 and a binding energy of 34 kJ/mol have been measured.
引用
收藏
页码:2901 / 2908
页数:8
相关论文
共 32 条
[1]  
BARRER RM, 1940, T FARADAY SOC, V36, P1242
[2]  
Baskes M. I., 1981, HYDROGEN EFFECTS MET, P67
[3]   TRAPPING OF HYDROGEN AND HELIUM AT GRAIN-BOUNDARIES IN NICKEL - AN ATOMISTIC STUDY [J].
BASKES, MI ;
VITEK, V .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1985, 16 (09) :1625-1631
[4]  
BASKES MI, 1981, INTERATOMIC POTENTIA, P249
[5]   DEFECT TRAPPING OF ION-IMPLANTED DEUTERIUM IN NICKEL [J].
BESENBACHER, F ;
BOTTIGER, J ;
MYERS, SM .
JOURNAL OF APPLIED PHYSICS, 1982, 53 (05) :3536-3546
[6]  
BEVINGTON PR, 1976, DATA REDUCTION ERROR
[7]   INFLUENCE OF HYDROGEN ON PLASTIC DEFORMATION DUCTILITY, AND FRACTURE OF NICKEL IN TENSION [J].
BONISZEWSKI, T ;
SMITH, GC .
ACTA METALLURGICA, 1963, 11 (03) :165-&
[8]   PERMEATION OF IMPLANTED DEUTERIUM THROUGH NI [J].
BORGESEN, P ;
SCHERZER, BMU ;
MOLLER, W .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1985, 7-8 (MAR) :67-70
[9]   INFLUENCE OF SULFUR, PHOSPHORUS, AND ANTIMONY SEGREGATION ON THE INTERGRANULAR HYDROGEN EMBRITTLEMENT OF NICKEL [J].
BRUEMMER, SM ;
JONES, RH ;
THOMAS, MT ;
BAER, DR .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1983, 14 (02) :223-232
[10]   EFFECT OF TRAPPING ON HYDROGEN PERMEATION [J].
CASKEY, GR ;
PILLINGER, WL .
METALLURGICAL TRANSACTIONS, 1975, A 6 (03) :467-476