Microstructure and oxidation behavior of ZrB2-Modified high entropy silicide coatings on Ta substrate

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-03-01 DOI:10.1016/j.ceramint.2024.12.435

Dexiang Tian , Gang Zhao , Jiali Mao , Xinli Liu

引用次数: 0

Abstract

ZrB₂ modified high entropy silicide (Mo_0.2Cr_0.2Ta_0.2Nb_0.2W_0.2)Si₂ (MeSi₂) coating was prepared by slurry sintering method on Ta substrate. The effect of ZrB₂ content on the coating structure and the static oxidation resistance at 1200 °C and the evolution of the coating during oxidation process was studied. When the content of ZrB₂ exceeds 10 wt%, the outer layer is loose and composed of low silicide. The oxidation performance of MeSi₂ coating modified by 5 wt% ZrB₂ is the best, and ZrO₂ and ZrSiO₄ with high melting point were generated during oxidation. The combination of ZrO₂ and ZrSiO₄ acted as a protective framework that retarded the loss of SiO₂ during high-temperature oxidation, effectively reducing the permeability of oxygen, and extends oxidation protection time beyond 60 h.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.