The paper reviews the publications addressing the determination of the coating thickness on metal-coated grits of superhard materials. The available approaches to defining this problem have been analyzed and the methodological features of solving it have been studied. The present investigations have demonstrated that in the case where the actual 3D shape of a grit is a priori unknown the most appropriate approach is that which includes the outer specific surface in the coating thickness calculations. The author has been the first to propose to use an extrapolation-affine 3D model of a grit in such calculations. For synthetic diamond grits AS125 400/315 as an example, this 3D model has been shown to have a definite advantage over a sphere- and cube-shaped 3D model. The application of the extrapolation-affine 3D model of a grit provides a more accurate determination of the coating thickness on metal-coated diamond grits. The proposed method based on this methodological innovation is also suitable for grits of other abrasive materials.

中文翻译：

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间接分析确定金属包覆的超级磨料涂层厚度的方法学和应用方面

本文回顾了有关确定超硬材料的金属涂层砂砾上涂层厚度的出版物。分析了定义此问题的可用方法，并研究了解决该问题的方法学特征。本研究表明，在先验未知砂粒的实际3D形状的情况下，最合适的方法是在涂层厚度计算中包括外部比表面的方法。作者是第一个提出在这种计算中使用粗砂的外推仿射3D模型的作者。以合成金刚石砂粒AS125 400/315为例，该3D模型已显示出比球形和立方体形3D模型明显的优势。砂粒的外推仿射3D模型的应用可以更准确地确定金属涂层金刚石砂粒的涂层厚度。基于这种方法创新的建议方法也适用于其他磨料的磨粒。