用电化学氢渗透方法研究高强度纯净钢Q960中氢陷阱、氢渗透温度和试样厚度对氢扩散系数的影响. 研究结果表明: Q960纯净钢中的氢陷阱延长氢原子的穿透时间, 同时降低氢在钢中的扩散系数, 而可逆氢陷阱对氢扩散系数的影响大于不可逆氢陷阱; 氢在Q960纯净钢中的表观扩散激活能为26 056 J/mol; 氢在Q960纯净钢中的扩散系数与试样厚度无关.
The effects of hydrogen traps, permeation temperature and sample thickness on hydrogen diffusion coefficient in Q960 clean steel were studied using a method of electrochemical hydrogen permeation. Experimental results show that hydrogen traps can extend hydrogen penetration time, and hydrogen traps can reduce hydrogen diffusion coefficient in Q960 clean steel. The effect of reversible hydrogen traps on the hydrogen diffusion coefficient is greater than that of irreversible hydrogen traps. The apparent activation energy of hydrogen diffusion is 26 056 J/mol in Q960 clean steel. The hydrogen diffusion coefficient is independent of the sample thickness of Q960 clean steel.
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