CONTENTS

Production, Structure, Properties

Rumiantseva Y. Y., Polczyk T., Lysovenko S. O. Synthesis of magnesium-aluminum spinel at high  temperatures and pressures in Mg₂B₂O₅–Al, MgO–Al₂O₃, MgO–Al₂O₃–Al systems. . . . . . . . . . . . . . . . . . . . . . . . . 

3

Ratov B. Т., Mechnik V. A., Bondarenko N. A., Kolodnitskyi V. M., Hevorkian E. S., Chishkala V. А., Akhmetova N. S., Starik S. P., Bilorusets V. V., Sundetova P. S. Structure of Fe–Cr–Cu–Ni–Sn matrix with different ZrO₂ content for sintered diamond-containing composites. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10

Wang Peixun, Li Jiuyang, Yang Luyu, Wu Yi. The effect of holding time on the proper­ties of N-vacancy diffused high-entropy nitride ceramics (Ti_0.25V_0.25Cr_0.25Nb_0.25)N_0.825. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

Zhang Jun, Li Kai, Zhang Zhe, Chen Jiarong, Mo Peicheng, Pan Xiaoyi, Hu Qiaofan, Chen Chao. Effect of Cu–Sn–Ti solder alloy on morphology, bonding interface, and mechanical properties of brazed diamond grits. .

34

Chasnyk V. I., Chasnyk D. V., Kaidash O. M., Fesenko I. P., Kukharenko S. A. The influence of the surface condition of the volume absorber made of AlN–Mo composite on the reduction of microwave radiation reflection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

45

Kushch V. I., Manohin A. S., Klimenko S. A. Theoretical evaluation of the brittle strength of cBN–TiN two-phase ceramics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

55

Investigation of Machining Processes

Lavrinenko V. I. Modern developments in diamond processing processes and features of surface modification of diamond grains for targeted change of their properties (Review). . . . . . . . . . . . . . . . . . . . . . . . . . . .

60

Tools, Powders, Pastes

Petasyuk G. A., Lavrinenko V. I., Poltoratskyi V. G., Pasichnyi O. O., Petasyuk O. U. Study of the relationship between the technological properties of cubonite grinding powders modified with a combined coating and the operational characteristics of grinding wheels made using such powders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

84

Letters to the Editor

Turkevych V. Z., Matviichuk O. O., Decheng Li, Turkevych D. V. Thermodynamic modelling of the PCD bits sintering process in the C–Co–W system at pressure of 6GPa. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

97

Han Danhui, Peng Chong, Zhou Guangtong, Hu Bingtao. Rapid synthesis of nanodiamond/rGO composites by utilizing the explosive characteristics of graphene oxide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

101

Index of papers published in the Nadtverdi Materialy Journal in 2024. . . . . . . . . . . . . . . .

105