Effect of Cr on the oxidation resistance of in-situ TiC/Ni composites prepared by pressureless reactive sintering

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.2024.12.414

Xiquan Zhang, Qian Qi, Yueyang Zhao, Yuanyang Zhu, Qixiao Yang

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引用次数: 0

Abstract

The oxidation resistance of TiC/Ni composites plays one key role in the high temperature application areas. Cr could effectively improve the oxidation resistance of metal and alloys, and the effect of Cr on the oxidation behavior of in-situ TiC/Ni composites is investigated in this work. The composites with different Cr content (0, 5, 10 and 15 wt%) are prepared by reactive sintering, and the results show that Cr element dissolves in Ni matrix and exists in the form of Cr₇C₃ and Cr₂₃C₆ phase. The oxidation weight gain of composites decreases from 7.471 mg/cm² to 0.551 mg/cm², and the thickness of oxide scale decreases from 99.99 μm to 5.10 μm at 800 °C for 100 h by adding 15 wt% Cr. The double continuous layers including upper TiO₂ and beneath Cr₂O₃ is generated on composites. The Cr₂O₃ layer effectively inhibit the outward diffusion of Ti and Ni and inward diffusion of O ions, leading to the gradually disappearance of Ni oxides and inner oxide layer with the increase of Cr content. The critical value of Cr content in in-situ TiC/Ni composites to form continuous and dense Cr₂O₃ layer is about 10 wt%.

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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.