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选取自然锈蚀、电解锈蚀两种锈蚀产物颗粒作为研究对象,采用X射线衍射(XRD)、显微镜观测等方法研究两者物理性能上的差异。通过改进的固结试验方法,同时引入Hertz弹性接触理论,对不同粒径的不同锈蚀产物进行不同荷载作用下的模量分析计算,得到了不同荷载与铁锈模量之间的关系,表明铁锈不是线弹性物质,铁锈模量随荷载呈线性增加趋势。在试验结果基础上,还考虑尺寸效应影响,提出了自然锈蚀产物颗粒的内部损失表达式,并对自然锈蚀产物颗粒的内部损失进行定量分析,可描述理想无损自然锈蚀产物的力学性能。
Natural rust and electrolytic corrosion were selected as the objects of the study. X-ray diffraction (XRD) and microscopic observation were used to study the differences in their physical properties. Through the improved consolidation test and the introduction of Hertz elastic contact theory, the modulus analysis of different corrosion products with different particle sizes under different loadings was carried out. The relationship between different loads and the rust modulus was obtained, indicating that rust is not Linear elastic material, rust modulus linearly increasing with the load trend. Based on the experimental results, we also consider the effect of size effect and put forward the expression of internal loss of natural corrosion product particles. The quantitative analysis of the internal loss of natural corrosion product particles can describe the mechanical properties of ideal natural corrosion products.