CONTENTS

Production, Structure, Properties

Zabuga V. Ya., Tsapyuk G. G., Shpadkivs’ka T. O., Bochechka O. O. Thermo­dynamic aspect of the mechanism of diamond oxidation in the presence of tungsten. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

3

Petrusha I. A., Osipov A. S., Nikishina M. V., Smirnova T. I., Mel’niichuk Yu. A., Klimczyk  P. Preventive action of silicon nitride at HT-HP sintering of cubic boron nitride. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12

Perevertailo V. M., Loginova O. B., Lysovenko S. A. On the criteria for the surface activity and classification of the surface tension isotherms from the data on the melt structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

28

Shmegera R. S., Podoba Ya. O., Kushch V. I., Belyaev A. S. Effect of the contact conductivity of the diamond–metal binder interface on the thermal conductivity of diamond-containing composites. . . . . . . . . . . . . .

39

Umanskyi О. P., Polіarus О. N., Ukrainets M. S., Martsenjuk I. S., Subbotin V. I.   Studies of the structure, physicochemical properties and tribotechnical characteristics of composite materials of the NiAl–ZrB₂ system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

53

Investigation of Machining Processes

Lavrinenko V. I., Devitskii A. A., Pasichnyi O. O., Kukharenko S. A. Thermo­electric phenomena in machining processes and a study of their functioning in superabrasive grinding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

63

Salenko A. F., Shchetinin V. T., Fedotiev A. N., Dudyuk V. A., Klimenko S. A., Borimsky A. I., Sorochenko T. A. Methods of cutting for workpieces of hardmetal and cBN-based polycrystalline superhard material. . . . . . . . . . .

76

Tools, Powders, Pastes

Studenets’ S. F., Eryomin P. M., Chernyavs’kyi O. V. The influence of deformation conditions on the structure and hardening of cast iron surface layer in machining with combined carbide broaches. . . . . . . . . . . . . . . . . . . . .

91

Letters to the Editor

Mukhanov V. A., Solozhenko V. L. On electrical conductivity of melts of boron and its compounds under pressur. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

100