A novel method for strengthening C/C composite joint with high entropy alloy/Ni composite interlayers by spark plasma sintering: In-situ synthesis of high entropy cermet joint structure

IF 5.1 2区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Ceramics International Pub Date : 2024-10-02 DOI:10.1016/j.ceramint.2024.09.402
Laifu Wu , Xincheng Wang , Xueke Feng , Ben Chai , Yue Mao , Li Fu
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Abstract

C/C composite was successfully brazed with TiZrHfTa/Ni or ZrHfNbTa/Ni composite interlayers using spark plasma sintering. The influence of different interlayers and joining parameters on the joint morphology, shear strength at room temperature and 1000 °C was investigated. For both composite interlayers, the C/C joints obtained at 1800 °C for 30 min consisted of a single high entropy cermet structure, with a near equimolar high entropy carbide hard phase and a near pure Ni binder phase. However, the use of different composite interlayers resulted in differences in the elastic modulus and hardness of the formed high entropy carbide phase. The maximum shear strengths of the obtained C/C composite joints using TiZrHfTa/Ni and ZrHfNbTa/Ni interlayers at room temperature were close, with value of 37.49 ± 1.44 MPa and 38.95 ± 1.26 MPa, respectively. Because (Zr-Hf-Nb-Ta)C had better high-temperature stability than (Ti-Zr-Hf-Ta)C, the obtained C/C-ZrHfNbTa/Ni-C/C joint exhibited a higher shear strength of 28.54 ± 1.71 MPa at 1000 °C. After shear testing at both room temperature and 1000 °C, fractures in all joints predominantly occurred within the C/C composite near the reaction layer, indicating a substrate failure mode. The use of composite interlayers resulted in C/C composite joints with excellent shear strength, primarily due to the in-situ synthesized high entropy cermet reaction layer, which provided superior strength and toughness. Additionally, the laser-textured pattern on the C/C composite surface formed numerous interlocking structures at the joint interface, further enhancing the joints' shear strength.
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通过火花等离子烧结强化带有高熵合金/镍复合夹层的 C/C 复合材料接头的新方法:原位合成高熵金属陶瓷接头结构
采用火花等离子烧结法成功钎焊了带有 TiZrHfTa/Ni 或 ZrHfNbTa/Ni 复合中间膜的 C/C 复合材料。研究了不同夹层和接合参数对接合形态、室温和 1000 °C 下剪切强度的影响。对于这两种复合中间膜,在 1800 ℃、30 分钟的条件下获得的 C/C 接头由单一的高熵金属陶瓷结构组成,其中包括近乎等摩尔的高熵碳化物硬质相和近乎纯净的镍粘结相。然而,使用不同的复合夹层导致形成的高熵碳化物相的弹性模量和硬度不同。使用 TiZrHfTa/Ni 和 ZrHfNbTa/Ni 夹层获得的 C/C 复合材料接头在室温下的最大剪切强度非常接近,分别为 37.49 ± 1.44 兆帕和 38.95 ± 1.26 兆帕。由于(Zr-Hf-Nb-Ta)C 比(Ti-Zr-Hf-Ta)C 具有更好的高温稳定性,因此获得的 C/C-ZrHfNbTa/Ni-C/C 接头在 1000 ℃ 时的剪切强度更高,达到 28.54 ± 1.71 MPa。在室温和 1000 °C 下进行剪切测试后,所有接头的断裂都主要发生在反应层附近的 C/C 复合材料中,这表明存在基底失效模式。复合夹层的使用使 C/C 复合材料接头具有出色的剪切强度,这主要归功于原位合成的高熵金属陶瓷反应层,它提供了出色的强度和韧性。此外,C/C 复合材料表面的激光纹理图案在接合界面形成了许多互锁结构,进一步提高了接合处的剪切强度。
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来源期刊
Ceramics International
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.
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