CONTENTS

Production, Structure, Properties

Tian B., Xu B., Xu Y. Analysis of direct transformation from graphite to diamond crystal. . . . . . . . . . . . . . . . . . . .

3

Novikov M. V., Mechnik V. A., Bondarenko M. O., Nesterenko Yu. V., Lyashenko B. A., Kuzin M. O. The Influence of CrB₂ additive on the structure and properties of diamond-(Co–Cu–Sn) composite. . . . . . . . . . . . . . .

11

Ishchenko E. V., Gaidai C. V., Zakharova T. M., Yatsimirskii A. V., Shevchuk Ya. S. Studies of the CO oxidation kinetic regularities on Cu–Co–Fe oxide catalysts, bulk and deposited on the carbon nanotubes. . . . . . . . . . . . . .

28

Tsysar’ M. A. Investigation of the surface anisotropy of polycrystalline gallium nitride coating using a tunnel microscope equipped with a tip of a boron-doped diamond. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37

Andreiev I. V. Effect of the rate of cooling tungsten heavy alloys of the W–Ni–Fe type from the sintering temperature on the formation of their physico-mechanical properties. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

48

Chernega S. M., Poliakov I. A., Krasovskiy M. A. Increasing the wear resistance of the T15K6 hard alloy by boriding and complex saturation with boron and copper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

54

Investigation of Machining Processes

Filatov O. Yu., Sidorko V. I., Kovalev S. V., Filatov Yu. D., Vetrov A. G. Polished surface roughness of optoelectronic components made of monocrystalline materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

63

Tools, Powders, Pastes

Sheiko M. N. Grain shape as a factor governing the parameters of diamond electroplated coating of dressing tools. Part 3. The simplest 3D model of a diamond grain – “A barrel made of parabolic and circular staves”. . .

77

Letters to the Editor

Turkevich V. Z., Turkevich D. V., Solozhenko V. L. Phase diagram of the B–B₂O₃ system atpressures to
24 GPa. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

89