Use of Hafnium as a Sintering Activator of BL Group Composites in the cBN–HfC System

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

Journal of Superhard Materials Pub Date : 2025-10-20 DOI:10.3103/S1063457625050119

D. A. Stratiichuk, Ya. M. Romanenko, S. P. Starik, V. Z. Turkevich

引用次数: 0

Abstract

This study examines selected aspects of the formation of nonporous ceramic-matrix composites of the BL group in the cBN–HfC system, where hafnium micropowder serves as a sintering activator. The results demonstrate that, during HPHT experiments at 2300°C, the system undergoes reactive sintering characterized by the disappearance of the metallic phase and the formation of fine-grained HfB₂ through two mechanisms, with a volume fraction of up to 8%.

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铪在cBN-HfC体系中作为BL族复合材料烧结活化剂的应用

本研究考察了cBN-HfC系统中BL族无孔陶瓷基复合材料形成的选定方面，其中铪微粉作为烧结活化剂。结果表明：在2300℃高温高温实验中，反应烧结体系通过两种机制发生了金属相的消失和细晶HfB2的形成，其体积分数高达8%；

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.