Microstructure and properties of Ti/TiO2@SiC/Ti6Al4V composites by selective laser melting

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Composites Communications Pub Date : 2025-02-27 DOI:10.1016/j.coco.2025.102331

Yongli Guo , Zhanyong Zhao , Wenbo Du , Peikang Bai , Mengru Liu

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引用次数: 0

Abstract

In this study, Ti/TiO₂ composite coatings were fabricated on SiC substrates via organic chemical reduction and magnesiothermic reduction. SiC fiber-reinforced titanium matrix composites were subsequently prepared by selective laser melting (SLM). Systematic investigations reveal that the Ti/TiO₂ coatings significantly enhance interfacial compatibility between SiC and the titanium matrix, thereby strengthening interfacial bonding in Ti/TiO₂@SiC/Ti6Al4V composites. The coatings further act as effective nucleation sites, promoting accelerated grain growth and transforming the composite microstructure from fine equiaxed grains to randomly oriented acicular grains, effectively reducing material anisotropy. Enhanced interfacial integrity was shown to mitigate SiC detachment during friction processes, reducing abrasive wear and improving wear resistance, while enabling efficient load transfer for superior hardness and strength. Furthermore, the coated composites exhibited markedly improved corrosion resistance compared to their uncoated counterparts.

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.