CONTENTS

Production, Structure, Properties

Ivanovskii A. L. Search for superhard carbon: between graphite and diamond. . . . .

3

Bogatyreva G. P., Zakharova T. M., Veselovs’kyi V. L., Tsapyuk G. G., Byeda O. A., and Poltorats’kyi V. G. Mo₂C as a carrier of Cu–Co–Fe oxide catalysts in oxidation reaction of CO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

21

Belous V. A., Kuprin A. S., Dub S. N., Ovcharenko V. D., Tolmacheva G. N., Reshetnyak E. N., Timofeeva I. I., and Litvin  P. M. Structure and mechanical properties of Ti–Al–Si–N protective coatings deposited from separated plasma of a vacuum arc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27

Dutka V. A. Computer simulation of the temperature field in sintering carbide composites when induction and beam heatings are used. . . . . . . . . . . . . . . . . . . . . .

40

Tsysar’ M. A. Studies of topological features of the surface relief formation of titanium nitride films on silicon substrates during the diffusion mass transfer and on annealing using scanning tunneling microscopy. . . . . .

56

Investigation of Machining Processes

Burdin A. V. and Matyukha P. G. Diamond grinding of the WC–8Co–steel 45 composition using the control of the wheel cutting ability by an electroerosion method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

66

Voloshin A. V., Litvinov L. A., and Slyunin E. V. Effect of the crystallographic orientation on the sapphire surface roughness in diamond machining. . . . . . . . . . . .

74

Letters to the Editor

Kurakevych O. O. and Solozhenko V. L. Crystal structure of dense pseudo-cubic boron allotrope, pc-B₅₂, by powder X-ray diffraction. . . . . . . . . . . . . . . . . . . . . . . .

79