CONTENTS

Production, Structure, Properties

Osipov A. S., Klimczyk P., Cygan S., Melniichuk Iu. A., Petrusha I. A., and Jaworska L. Composites of the cBN–Si₃N₄ system reinforced by SiCw for turning tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

3

Zabuga V. Ya., Bochechka O. O., Tsapyuk G. G., Kurylyak T. O., and Fedorchuk O. S. Effect of tungsten on the oxidation kinetics of diamond nanopowder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12

Litoshenko N. V. Mathematic modeling of diffusion processes of the formation of rim-core structure at sintering TiC–Ni alloys with alloying carbide additions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24

Shaginyan L. R., Gorban’ V. F., Krapivka N. A., Firstov S. A., and Kopylov I. F. Properties of coatings of the Al–Cr–Fe–Co–Ni–Cu–V high entropy alloy produced by the magnetron sputtering. . . . . . . . . . . . . . . . . . . . . . .

33

Sobiyi K. and Sigalas I. High-speed machining of martensitic stainless steel using PcBN. . . . . . . . . . . . . 

45

Investigation of Machining Processes

Lavrinenko V. I. Abrasive cutting factor as a characteristic reflecting the performance parameters of superabrasive grinding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

52

Sheiko M. N., Skok V. N., and Pasichnyi O. O. Grain shape as a factor governing the parameters of diamond electroplated coating of dressing tools. Part 2. Actual grain–graphite form contact area and related characteristics as input data for calculating the conditions of diamond electroplated coating application by electroforming method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

61

Devin L. N. and Rychev S. V. An experimental study of the influence of tool material and fine turning conditions on the level of acoustic emission signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

67

Tools, Powders, Pastes

Dolmatov V. Yu., Kulakova I. I., Myllymäki V., Vehanen A., Bochechka A. A., Panova A. N., and Nguyen B. T. T. IR spectra of diamonds of different origins and upon different purification procedures . . . . . . . . . . . . . . . . 

75

Letters to the Editor

Jouini Z., Kurakevych O. O., Moutaabbid H., Le Godec Y., Mezouar M., and Guignot N. Phase boundary between Na–Si clathrates of structures I and II at high pressures and high temperatures. . . . . . . . . . . . . . . . 

85