CONTENTS

Production, Structure, Properties

Shulzhenko A. A., Bezhenar N. P., Tkach S. V., Tkach V. N., and Bozhko S. A. The structure formation and hardness of cubic boron nitride composites in reaction sintering on carbide substrates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

Solozhenko V. L., Kurakevich A. A., Turkevich V. Z., and Turkevich D. V. Synthesis of B₆O boron suboxide at pressures up to 1 GPa. . . . . . . . . . . . . . . . . . . .

14

Perevertailo V. M., Smegera S. V. , and Ostrovskaya L. Yu. Evaluation of the surface energy of carbon materials by measuring wetting angles. . . . . . . . . . . . . . . .

19

Dub S. N., Novikov N. V., and Milman Yu. V.  Method of measuring the Young modulus in local elastic deformation of the sample surface. . . . . . . . . . . . . . . . . . . .

31

Kochubey V. O., Lavrenko V. A., Naumenko D., Wessel E., Singheiser L., and Quadakkers W. J.   Effect of impurity carbon and chromium carbides formed at the oxide scale-metal interface on the peculiarities of high-temperature oxidation of heat-resistant alloys of the Fe-Cr-Al-Y system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

39

Lysenko A. V.  Force constants of elastic deformation of chemical s-bonds in a diamond and superhard single crystals having a sphalerite lattice. . . . . . . . . . . . . . .

46

Danilchenko V. Yu. and Semyrga O. M. Regularities of the formation of carbide electrical discharge coatings on steel substrates. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

57

Investigation of Machining Processes

Sidorko V. I., Filatov Yu. D., Filatov A. Yu., and Poperenko L. V. Investigation into the surface states of a workpiece and a tool in polishing nonmetallic materials.

63

Tools, Powders, Pastes

Novikov N. V., Bogatyreva G. P., and Petasyuk G. A. On informativity of morphological characteristics of superhard materials powders found using video-computer diagnostic complexes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

73

Letters to the Editor

Mukhanov V. A. and Kovalenko V. S. Recovery of diamond from sapphire slurries.

86