CONTENTS

Production, Structure, Properties

Ren Xiangting, Yan Xiaozhi, Wang Liping, Zhao Yusheng, Wang Shanmin. Strengthening superhard materials by nanostructure engineering . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . .

3

Dolmatov V. Yu., Ozerin A. N., Vehanen A., Myllymäki V., Dorokhov A. O. On the question of the mechanism of formation of detonation diamonds. . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . .  . . . . . . . .

31

Cha Sang Jun, Pak Myong Chol, Kim Kwang-Il, Kim Su Gon. Recrystallization characteristics of catalytic alloy and graphite in diamond synthesis . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . .

39

Ratov B. T., Bondarenko M. O., Mechnik V. A., Strelchuk V. V., Prikhna T. A., Kolodnitskyi V. M., Nikolenko A. S., Lytvyn P. M., Danylenko I. M., Moshchil V. E., Gevorkyan E. S., Kosminov A. S., Borash A. R. Structure and properties of WC–Co composites sintered by vacuum hot pressing with different CrB₂ content for drill bits. . . .

49

Zhang Lei, Deng Fuming, Guo Zhenhai. Enhancement of adhesion of diamond coating on cemented carbide by laser modified substrate surface structure pretreatment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

64

Tools, Powders, Pastes

Petasyuk G. A., Bochechka O. O., Syrota Yu. V. Expansion of the applied capa-bilities of the search-analog method for identifying the shape of the projection of abrasive powders grains. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

78

Letters to the Editor

Solozhenko V. L. Hardness of new boron-rich chalcogenides B₁₂S and B₁₂Se. . . . . .  . . . . . . . . . . . . . . . . . .

90