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Corrosion Cracking of Kh70 Pipe Steel under the Conditions of Cathodic Protection
Materials Science ( IF 0.9 ) Pub Date : 2020-09-01 , DOI: 10.1007/s11003-020-00425-x
L. I. Nyrkova

We study the mechanism of corrosion cracking of Kh70 steel in a neutral soil electrolyte under the conditions of cathodic protection. We distinguished three areas of potentials in which the processes of corrosion cracking of steel are governed by different mechanisms. Thus, the process of local anodic dissolution proves to be predominant under potentials more positive than – 0.75 V, the mechanism of hydrogen embrittlement is predominant under potentials more negative than – 1.05 V; at the same time, both these mechanisms act within the range of potentials from – 0.75 to – 1.05 V.

中文翻译:

阴极保护条件下Kh70管钢的腐蚀开裂

我们研究了阴极保护条件下 Kh70 钢在中性土壤电解质中腐蚀开裂的机理。我们区分了钢腐蚀开裂过程受不同机制控制的三个电位区域。因此,局部阳极溶解过程被证明在高于 – 0.75 V 的电位下占主导地位,在低于 – 1.05 V 的电位下氢脆机制占主导地位;同时,这两种机制都在 – 0.75 到 – 1.05 V 的电位范围内起作用。
更新日期:2020-09-01
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