Interfacial structure evolution of Ti-coated diamond particle reinforced Al matrix composite produced by gas pressure infiltration

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY Composites Part B: Engineering Pub Date : 2017-03-15 DOI:10.1016/j.compositesb.2017.01.047

Zifan Che , Qingxiao Wang , Luhua Wang , Jianwei Li , Hailong Zhang , Yang Zhang , Xitao Wang , Jinguo Wang , Moon J. Kim

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引用次数: 49

Abstract

The interfacial structure evolution of Ti-coated diamond particle reinforced Al matrix composite produced by gas pressure infiltration has been studied systematically, aimed to provide an insight into the optimization of interfacial structure and properties of the composite. The results show that the Ti coating layer on diamond particle consists of three layers, including fine TiC grains, TiC columnar grains and dispersed Ti particles. During the infiltration of molten Al, the dispersed Ti particles react with Al to form Al₃Ti particles in Al matrix, while both TiC layers remain unchanged. However, in the subsequent cooling process, Al₄C₃ particles are formed along the grain boundaries of TiC columnar grains as a result of Al diffusion and the subsequent Al/TiC reaction. By controlling the thickness of the TiC layers on diamond surface, an optimized thermal conductivity of 650 W m⁻¹ K⁻¹ is obtained for the composite. The finding is beneficial to the understanding of diamond coating engineering in the diamond particle reinforced Al matrix composite.

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气压渗透制备ti包覆金刚石颗粒增强Al基复合材料界面结构演变

系统研究了气压渗透制备ti包覆金刚石颗粒增强Al基复合材料的界面结构演变，为优化复合材料的界面结构和性能提供依据。结果表明:金刚石颗粒表面的Ti包覆层由细小TiC颗粒、TiC柱状颗粒和分散Ti颗粒三层组成;在熔融Al渗透过程中，分散的Ti颗粒与Al反应，在Al基体中形成Al3Ti颗粒，而两个TiC层保持不变。然而，在随后的冷却过程中，由于Al的扩散和随后的Al/TiC反应，沿TiC柱状晶粒的晶界形成了Al4C3颗粒。通过控制金刚石表面TiC层的厚度，复合材料的最佳导热系数为650 W m−1 K−1。这一发现有助于对金刚石颗粒增强铝基复合材料中金刚石涂层工程的理解。

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.