Effect of Mechanical Activation on the Structural Parameters of Ceramic Powders cBN-Co, hBN-Co

Abstract

The paper describes the study of mechanical activation of multi-component ceramic powder materials based on boron nitride. The mechanical activation of the powders was carried out according to the best optimal parameters in a ball mill AGO-2U. Increasing the time of mechanical activation leads to more fine-grained powders. We described the technique of mechanical activation of ceramic powder materials. We introduced the results of X-ray diffraction analysis of the ceramic powder cBN, cBN-Co, hBN-Co before and after mechanical activation. We generated mathematical equations of dependence of an average powder particle size on the average mechanical activation time. We described how the crystal lattice "a" parameters and unit cell volume "V" of cBN and hBN powders depend on mechanical activation time. We studied the chemical composition of powder materials. We also studied the structural parameters of ceramic powders.

Investigation of the Effect of Mechanical Activation of Powder Components on the Properties of Polyimide Composites

“…One of the most promising methods for producing composites is joint dispersion of the polymer matrix and filler by mechanical activation in a jet-vortex mill [13][14][15]. Joint dispersion makes it possible to achieve not only the mechanical activation of the surface of the particles of the polymer matrix and the filler, but also a high uniformity of distribution of the filler in the matrix and eliminates the possibility of the formation of agglomerates [16,17].…”

“…As a result, free radicals and active groups appear that are easily involved in the reaction with other reagents. It should also be noted that mechanical activation does not lead to the emergence of new chemical bonds (new active groups) in the initial structure [13][14][15][16][17].…”