V. M. Kolodnitskyi

Unusual inclusions of manganese and manganese-nickel compounds in microdiamonds (0.3–0.5 mm) of unknown origin, picked up from geological samples of

The phase stability, mechanical properties, and electronic structure of (Ti, W)C solid solutions are computationally investigated, specifically, by density

The structure formation features and mechanical properties of the AlN–С–TiB2 ceramic composite containing 2 wt % of diamond powder and 13

The current papers on the surface modification of diamond grinding powder grains by applying cubic boron nitride (cBN) coatings to them are reviewed. The r

The study investigates the structure of composite materials fabricated based on WC–Co alloys with varying contents of zirconium dioxide and chromium

The structure and mechanical properties of AlN–C–ZrB2 composite ceramics for electrical applications, based on AlN with 2 wt % diamond po

To produce strong and wear-resistant tools for the rock drilling industry, the most commonly used metal matrix composites contain the reinforcing phase of cemented carbide. There are numerous research reports on attempts to improve the performance of WC-Co composites. The paper is a continuation of previously reported research on the SPS-processed WC–6 wt.%Co metal matrix composites with yttria-stabilized zirconia (YSZ) addition in amounts of 4 wt.% and 10 wt.%. The sintered specimens were polished and underwent the microindentation tests with a Vickers shape diamond tip. The following parameters were measured: stiffness S, the Poisson number ν, indentation creep C_IT, relaxation R_IT, indentation hardness H_IT, indentation Vickers hardness HV_IT, Martens hardness HM, reduced modulus E*, and indentation elastic modulus E_IT. The tests revealed hardness values of 16.2–17.0 GPa and indentation elastic moduli in the range of 607–670 GPa. Moreover, respective plastic and elastic parts of the indentation work W_plast and W_elast were determined. It was found that YSZ addition slightly reduced hardness and modulus, but all the three wear parameters, H/E, H³/E², and 1/(E²H), increased after addition of zirconia. Specifically, for 10 wt.% ZrO₂ H/E increased by 5%, H³/E² by 7%, while 1/(E²H) by 27% compared to 94WC–6Co composition.

The effect of the content of SiC additives to HfB2 and their physicochemical properties (grain morphology and size of SiC powders, content and composition

This study reports the preparation of AlN–TiN ceramic composites with high TiN content, near the percolation threshold, by pressureless sintering and

We developed an efficient computational model of thermal processes during friction stir welding (FSW) of heat-resistant alloys using a superhard tool. The