CONTENTS

Production, Structure, Properties

Belyavina N. M., Turkevich V. Z., Stratiichuk D. A., Kuryliuk A. M., Romanenko Ya. M. Mechanisms of interaction between TiC and VN under HPHT sintering and at mechanical alloying. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

Matar S. F., Solozhenko V. L. Novel ultrahard monoclinic carbon allotropes from crystal structure engineering and first principles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

14

Burchenya A. V., Lysakovsky V. V., Kovalenko T. V., Ivakhnenko S. O. Setting the cooling process of the pressure punches of a six-punch press when growing diamond single crystals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

24

Prokopiv M. M., Kharchenko O. V., Chernova M. Ye. Functionally-gradient ceramics based on ZrС‒Al₂O₃ obtained from an exothermic mixture of 70ZrO₂‒24Al‒6С by hot pressing in contact with colloidal graphite. . . . . . . . . . . .

33

Pashchenko O. A., Koroviaka Ye. A., Khomenko V. L., Kamyshatskyi O. F., Shypunov S. O. Exploring microstructural properties of tungsten carbide-cobalt composites using advanced image processing techniques. . . . . . 

46

Liu Jialin, Lin Zhibin, Chen Yongqian, Guo Shirui, Cui Yinghao, Li Xiaolei, Zheng Bo, Zhao Yue, Cui Lujun, Wang Shuai, Wang Lei, Gu Minghui, Du Quanbin, Wang Xiaolu. The removal mechanism of PcBN material by femtosecond laser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

59

Investigation of Machining Processes

Filatov Yu. D., Prikhna T. O., Boyarintsev A. Y., Sidorko V. I., Kovalev S. V. Polishing optical surfaces of copper and aluminum parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . 

72

Tools, Powders, Pastes

Lavrinenko V. I., Smokvyna V. V., Ilnytska H. D., Solod V. Yu. Performance indicators of the grinder tools with diamond grinding powder, obtained by adhesive-magnetic sorting in liquid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

84

Letters to the Editor

Prikhna T. O., Barvitskyi P. P., Hevorkian E. S., Moshchil V. E., Karpets M. V., Ponomaryov S. S., Devin L. V., Rychev S. V., Kolodnitskyi V. M., Rucki M., Lokatkina A. S., Borimskiy O. I., Marchenko A. A., Polikarpova L. O. Ultra high temperature composite materials based on TaB₂, sintered by various methods. . . . . . . . . . . . . . . . . . . . . . . . . . .. 

93

Index of papers published in the Nadtverdi Materialy Journal in 2025. . . . . . . . . . . . . . . . .

98