V. O. Vienikov, O. O. Bochechka, O. I. Chernienko, O. S. Osipov, V. V. Bilorusets, A. O. Liamtseva, Yu. O. Melniychuk
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Effect of Titanium Coating Modification of Diamond Powder Grains on the Formation of a Polycrystalline Composite under High Pressure and High Temperature
Diamond was synthesized in the Mg–Zn–C system under a pressure of 8 GPa and at a temperature of 1800°C. Following chemical purification, titanium was deposited onto the diamond powder grains via chemical vapor deposition. This study examined how the titanium coating affects the densification kinetics and microstructure of the resulting polycrystalline diamond composite. High-pressure sintering of the titanium-coated diamond powder decreased the temperature required for maximum densification by 300°C, compared with uncoated diamond powder.
期刊介绍:
Journal of Superhard Materials presents up-to-date results of basic and applied research on production, properties, and applications of superhard materials and related tools. It publishes the results of fundamental research on physicochemical processes of forming and growth of single-crystal, polycrystalline, and dispersed materials, diamond and diamond-like films; developments of methods for spontaneous and controlled synthesis of superhard materials and methods for static, explosive and epitaxial synthesis. The focus of the journal is large single crystals of synthetic diamonds; elite grinding powders and micron powders of synthetic diamonds and cubic boron nitride; polycrystalline and composite superhard materials based on diamond and cubic boron nitride; diamond and carbide tools for highly efficient metal-working, boring, stone-working, coal mining and geological exploration; articles of ceramic; polishing pastes for high-precision optics; precision lathes for diamond turning; technologies of precise machining of metals, glass, and ceramics. The journal covers all fundamental and technological aspects of synthesis, characterization, properties, devices and applications of these materials. The journal welcomes manuscripts from all countries in the English language.