Effect of Titanium Coating Modification of Diamond Powder Grains on the Formation of a Polycrystalline Composite under High Pressure and High Temperature

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Superhard Materials Pub Date : 2025-07-20 DOI:10.3103/S1063457625030104

V. O. Vienikov, O. O. Bochechka, O. I. Chernienko, O. S. Osipov, V. V. Bilorusets, A. O. Liamtseva, Yu. O. Melniychuk

引用次数: 0

Abstract

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.

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金刚石粉末颗粒的钛涂层改性对高压高温下形成多晶复合材料的影响

在Mg-Zn-C体系中，在1800℃的温度下，在8 GPa的压力下合成了金刚石。经过化学净化后，通过化学气相沉积将钛沉积在金刚石粉末颗粒上。本研究考察了钛涂层如何影响聚晶金刚石复合材料的致密化动力学和微观结构。与未包覆的金刚石粉末相比，包覆钛金刚石粉末的高压烧结使最大致密化所需的温度降低了300℃。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Superhard Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.80

自引率

66.70%

发文量

审稿时长

2 months

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.