Indirect Evaluation of the Thickness of Coatings on Synthetic-Diamond Powders with the Use of New 3D Grain Models

Pycnometric-Additive Determining of the Degree of Coating of High-Strength Synthetic Diamond Grinding Powders using the Actual 3D Morphology of their Grains

“…If we compare these values of the average grain volume of the initial and modified grinding powders with the values given in the table (the combined use of both the actual 3D shape of the grain and its extrapolation-affinity 3D model), then they are, respectively, in 1.13 (by 11.59 %) and 1.1 (8.77%) times higher. A similar tendency of the ratio between the actual grain volume and the volume calculated using its extrapolation-affinity 3D model was first discovered in the course of research conducted in [20]. In this work, a parallelepiped was used as a test actual 3D grain shape.…”

“…Another characteristic of such powders is closely related to the coating thickness of abrasive powders with a modified grain surface, as a sign of their quality, namely the degree of coating [9,[19][20][21]. Quite often, this technological property is used as an alternative to coating thickness when evaluating the quality of modified abrasive powders [21].…”

“…In addition, the degree of coating have an independent value, as an important methodical component of the indirect-analytical determining of the thickness of the coating. This is due to the fact that the degree of coating is included in the list of initial data required when determining the thickness of the coating by known indirect analytical methods [19,20,[22][23][24][25][26].…”