CONTENTS

Production, Structure, Properties

Romanko L. O., Bochechka O. O., Chernienko O. I., Kush O. V. Dielectric properties of synthetic diamond polycrystals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

Devin L. M., Lytvyn P. M., Ivakhnenko S. O., Zanevskyi O. O. Methodology of HTHP diamond single crystal brittle fracture investigations by crack propagation analysis under shock load. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

19

Grushko V. І., Chaplynskyi R. Yu., Yamnenko Iu. S., Leshchuk O. O., Mitskevich E. I., Ivakhnenko S. О., Lysakovskyi V. V., Zanevskyi О. О., Petrosyan Е. E., Mykytiuk T. V. Anisotropic charge transport in HPHT diamonds. . . . . . . . . . . . . .

29

Yurkova O. A., Minitskyi A. V., Nakonechnyi S. O., Shaposhnikova Y. S., Bilyk I. I. Investigation of the influence of high-speed sintering modes on the structure and properties of WC-based carbide composite with high entropy bonding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

40

Buketov A. V., Shulga Yu. M., Fesenko I. P., Bezbakh O. M., Pastukh O. A. Increasing the resource of water transport means by using multifunctional composites with a polymer matrix, ultradispersed diamond and discrete fibrous filler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

50

Investigation of Machining Processes

Filatov Yu. D., Sidorko V. I., Kovalev S. V., Boyarintsev A. Y., Kovalev V. A., Yurchyshyn O. Y. Formation and localization of deposit from wear of polishing powder nanoparticles on treated surface during polishing of polymer optical materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

69

Tools, Powders, Pastes

Petasyuk G. A., Ilnytska H. D., Bazalii G. A., Oleinyk N. O., Syrota Yu. V. Flotation separation as a method of improving the uniformity of synthetic diamond powders according to their morphometric characteristics, grain shape and grain composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

81

Letters to the Editor

Stratiichuk D. A., Devin L. M., Richev S. V., Turkevich V. Z. Dynamic tensile strength of ceramic-matrix composites of the BL group, which are obtained in the cBN–carbide–Al systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

93

Lavrinenko V. I. On the influence of the hydrogen index of technology liquids for performance characteristics diamond abrasive wheels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

96