CONTENTS

Production, Structure, Properties

Kushch V. I., Petrusha I. A., Turkevych V. Z. Effect of grain boundaries on the elastic stiffness and thermal conductivity of polycrystalline cubic boron nitride. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

Matar S. F. High-density ultrahard novel orthorhombic carbon allotropes C₁₂ and C₁₆ with physical properties close to diamond: structural and DFT investigations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

15

Vienikov V. O., Bochechka O. O., Chernienko O. I., Osipov O. S., Bilorusets V. V., Liamtseva A. O., Melniychuk Yu. O. The effect of modifying diamond powder grains with a titanium coating on the formation of a polycrystalline composite from it at high pressure and high temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25

Omelianenko V. I., Fesenko I. P., Kaidash O. M., Tuz Yu. M., Dovhal A. V., Kukharenko S. A., Chasnyk V. I., Oleǐnik G. S., Zakharchuk H. P. Structure and surface area of aluminum nitride particles under milling. . . . . . . . . . . . .

31

Grechanyuk V. G., Matsenko О. V., Kozyrev А. V., Grechanyuk І. M., Shapovalov V. О. Structure and mechanical properties of thick vacuum TiC condensates obtained by electron beam evaporation. . . . . . . . . . . . . . . . . . . . . . . . . . . .

43

Investigation of Machining Processes

Lavrinenko V. I. Modern developments in the study of the peculiarities of diamond-abrasive processing of hard and brittle materials (Review). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

49

Tools, Powders, Pastes

Shang Jinyu, Yu Ruien, Zhu Boheng, Gong Wenjie, Tian Zhicong, Li Kenan, Ma Qingchun, Zhu Xijing. Impact of nano-montmorillonite on the properties of vitrified bonded diamond grinding wheels. . . . . . . . . . . . . . . . . . . . . . . . . . .

64

Petasyuk G. A., Bochechka O. O. Automated identification of the 3D shape of grains of high-strength synthetic diamond grinding powders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

79

Letters to the Editor

Matviichuk O. O., Turkevych V. Z., Kuz’menko Ye. F., Hnatenko I. O. Thermal conductivity of WC–20%Co and WC–20%Ni alloys with mesostructure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

94