Topography is a surface characteristic which is as important as the chemical composition with regard to its functional properties. Topography can be mainly described by three kinds of roughness parameters: amplitude, frequency and hybrid parameters. The present study aims to perform a multiscale morphological analysis of 316L austenitic stainless steel ground surfaces with 11 different paper grades. It is shown that the values of the most commonly used roughness parameters Ra (average arithmetic roughness) and Rt (peak to valley) depend on the observation scale with values distributed into three characteristic stages. At small observation scales, less than ∼5 μm, the abraded surfaces are not characterised by any particular scaling law. At large observation scales, more than ∼60 μm, the evolution of the roughness parameters indicates that the abrasion mechanism follows an homothetic scaling law for the different paper grades. These two extreme stages are separated by a transition stage that can be characterised by an index, which exhibits an increasing linear evolution with the size of the abrasive grains.
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机译：形貌是表面特征，就其功能性质而言，其与化学组成一样重要。地形主要可以通过三种粗糙度参数来描述：振幅，频率和混合参数。本研究旨在对具有11种不同纸张等级的316L奥氏体不锈钢地面进行多尺度形态分析。结果表明，最常用的粗糙度参数R a （平均算术粗糙度）和R t （峰谷）的值取决于观测尺度，其值分布分为三个特征阶段。在较小的观察尺度下（小于约5μm），磨蚀表面没有任何特定的尺度定律。在大于60μm的大观察范围内，粗糙度参数的变化表明，磨损机理遵循不同纸张等级的相似缩放定律。这两个极端阶段由一个过渡阶段分隔开，该过渡阶段可以用一个指标来表征，该指标随着磨料颗粒尺寸的增加而呈现出不断增加的线性变化。
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