可变形金属体与含氢环境相互作用表面电位的计算

M. Stashchuk, P. Pukach, E. Irza, R. Hromyak, Nazar Stashchuk
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引用次数: 0

摘要

在大多数情况下,金属结构在工作条件下的服务导致这些结构或其某些元件不断受到机械因素(载荷,残余应力等)的影响,而且还受到环境的影响。管道元件、火电厂和水电站的承重部分、桥梁的金属结构都受到其周围或填充环境的影响。这样的环境取决于酸和碱的含量,一些含氢的介质可能具有腐蚀性。还应当指出,这种腐蚀环境的影响与机械因素的影响是同时发生的,而且是相互关联的,经常导致金属脆性或准脆性断裂。因此,对受机械力因素同时作用腐蚀的金属结构的基本工程参数(强度、可靠性等)进行估算,是目前工业运行中的一个重要问题。本文在弹性理论、电动力学、理论电化学和数学物理方程的基础上提出了一些问题。根据建立的有效电势计算解析比和相应的数值实验,对可变形金属体与含氢介质相互作用表面的电势进行了估计。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Calculation of electric potentials on the surfaces of interaction of deformable metal bodies with hydrogen-containing environment
In most cases the metal structures service under operating conditions results in the fact that these structures or their certain elements are constantly affected not only by mechanical factors (load, residual stresses, etc.), but also by the environment. Elements of pipelines, load-bearing sections of thermal and hydroelectric power stations, metal structures of bridges are all influenced by the environment that fills or surrounds them. Such environment depending on the content of acids and alkalis, a number of hydrogen-containing media can be corrosive. It should be also noted that the influence of such corrosive environment and mechanical factors influence are simultaneous and interrelated resulting very often in brittle or quasi-brittle metal fracture. Therefore, the problem of estimating the basic metal structures engineering parameters (strength, reliability, etc.) that are corroded by the simultaneous action of mechanical force factors, is currently an important problem of industrial operation. The paper presents problems based on the theory of elasticity, electrodynamics, theoretical electrochemistry and equations of mathematical physics. According to the established analytical ratios for the calculations of effective electric potentials and the corresponding numerical experiments, the estimation of electric potentials on the surfaces of interaction of deformable metal bodies with hydrogen-containing medium is carried out.
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