The Effect of Holding Time on the Properties of N-Vacancy Diffused High-Entropy Nitride Ceramics (Ti0.25V0.25Cr0.25Nb0.25)N0.825

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

Journal of Superhard Materials Pub Date : 2025-01-23 DOI:10.3103/S1063457624060108

Peixun Wang, Jiuyang Li, Luyu Yang, Yi Wu

引用次数: 0

Abstract

High-entropy ceramics (HECs) have garnered significant attention due to their unique microstructure, desirable properties, and vast compositional space. In this study, we utilized homemade TiN_0.3 with anionic vacancies as a sintering aid, equimolarly mixed with VN, CrN, and NbN. Our results demonstrate the following: Firstly, high-entropy nitride ceramics with a single rock salt phase were successfully synthesized within a holding time of 5 min. Secondly, the samples exhibited their maximum hardness, flexural strength, and fracture toughness values at a holding time of 15 min-measuring at 21.51 ± 1.50 GPa, 1271 ± 24 MPa, and 3.63 ± 0.35 MPa m^1/2, respectively.

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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.