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采用模拟试样，在高温、高压、充氢条件下，试验研究了Ｃ－０．５Ｍｏ钢和有奥氏体不锈钢堆焊层的Ｃ－ ０．５Ｍｏ钢抗高温氢腐蚀性能的．差别。试验结果表明：由于堆焊层可降低Ｃ－０．５Ｍｏ基材中的扩散氢浓度，使得 有不锈钢堆焊层的Ｃ－０．５Ｍｏ钢抗氢蚀性能显著高于无堆焊层的Ｃ－０．５Ｍｏ钢。用以上试验结果，分析一台堆 焊层的Ｃ－０．５Ｍｏ钢加氢反应器，认为该反应器可在高于Ｎｅｌｓｏｎ曲线中０．５Ｍｏ钢的操作极限条件下继续安全使用。
Simulated samples were used to study the high temperature hydrogen corrosion resistance of C-0.5Mo steel and C-0.5Mo steel with austenitic stainless steel surfacing layer under high temperature, high pressure and hydrogen charging conditions. difference. The experimental results show that the hydrogen embrittlement resistance of C-0.5Mo steel with stainless steel overlay is significantly higher than that of non-overlay C-0.5Mo because the overlay can reduce the diffusion hydrogen concentration in C-0.5Mo substrate, 0.5Mo steel. Based on the above test results, a C-0.5Mo steel hydrogenation reactor with a surfacing layer was analyzed and considered to be safe to use above the operating limit of 0.5Mo steel in the Nelson curve.