CONTENTS
	Production, Structure, Properties
	Bondarenko N. A., Novikov N. V., Mechnik V. A., Oleinik G. S., and Vereshchaka V. M. Structural peculiarities of highly wear-resistant superhard composites of the diamond–WC-6Co carbide system. . . . . . . . . . . . . . . . . . . . . . . .	3
	Dub S. N. and Novikov N. V. Testing of solids for nanohardness. . . . . . . . . . . . . . .	16
	Gordeyev S. K. and Korchagina S. B. Are there “fine” nanodiamonds?. . . . . . . . . .	34
	Tkach S. V., Kuzmenko E. F., Tkach V. N., Gontar A. G., and Shulzhenko A. A. Microhardness measurements in local regions of a cBN-based cutting two-layer insert. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	41
	Kazimirov V. P., Roik A. S., Perevertailo V. M., Loginova O. B. The structure of nickel-carbon melt having composition Ni92C8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .	46
	Bondarenko V. P. and Epik I. V. Thermodynamic analysis of reduction processes in the manufacture of cemented carbides. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	54
	Staryk S. P., Gontar O. G., Gorokhov V. Yu., and Gorshtein B. A. Optical characteristics of carbon coatings on silicon substrates . . . . . . . . . . . . . . . . . . . . . .	64
	Katrusha A. N., Ivakhnenko S. A., and Zanevsky O. A. Special features of high pressures-high temperatures-induced variations of defect-and-impurity state of natural diamond single crystals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	69
	Investigation of Machining Processes
	Skryabin V. V., Filatov Yu. D., and Sidorko V. I. Regularities of polishing products of aluminosilicate materials using tools with bound polishing powder. . . . . . . . . . .	73
	Tools, Powders, Pastes
	Sulima A. G. A plant for dynamic testing for strength and fracture toughness. . . . .	79
	Jubilees, Dates
	To the 70th birthday of D. V. Fedoseyev (1934—1996). . . . . . . . . . . . . . . . . . . . . . .	84
	Index of papers published in Sverkhtverdye Materialy in 2004	86
PHASE DIADRAM AND DIAMOND SYNTHESIS IN THE ALUMINUM-CARBON SYSTEM AT A PRESSURE OF 8 GPa
PHASE DIADRAM AND DIAMOND SYNTHESIS IN THE ALUMINUM-CARBON SYSTEM AT A PRESSURE OF 8 GPa