以不同扫描速度激光熔覆制备的原位合成 WC 增强 Ni60 涂层的微观结构和摩擦学特性

IF 3.2 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Journal of Thermal Spray Technology Pub Date : 2024-05-20 DOI:10.1007/s11666-024-01781-9

Zhibin Yan, Weizhou Li, Shengyuan Lei, Ruixia Yang, Dechang Zeng

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引用次数: 0

摘要

为了减少复合涂层中 WC 的分解以提高耐磨性，采用不同激光扫描速率的激光熔覆法制备了原位合成的 WC 增强 Ni60 涂层。结果表明，复合涂层致密无裂纹，主要由 Fe0.64Ni0.36、WC 和 Cr2N 相组成。更重要的是，原位合成的 WC 均匀地分布在基体相中，当激光扫描速率为 200 mm min-1 时，复合涂层的磨损率最低，为 2.82 × 10-6 mm3 N-1 m-1。涂层耐磨性的提高归因于形成了具有 2100 HV0.1 左右高显微硬度的碳化钨以及与基体相的良好结合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Microstructure and Tribological Properties of In situ-Synthesized WC-Reinforced Ni60 Coatings Prepared by Laser Cladding with Different Scanning Rates

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Microstructure and Tribological Properties of In situ-Synthesized WC-Reinforced Ni60 Coatings Prepared by Laser Cladding with Different Scanning Rates

To reduce the decomposition of WC in the composite coatings so as to improve the wear resistance, in situ-synthesized WC-reinforced Ni60 coatings were prepared by laser cladding with different laser scanning rates. The results showed that the composite coating was dense and crack-free and mainly composed of Fe_0.64Ni_0.36, WC and Cr₂N phases. More importantly, the in situ-synthesized WC was uniformly distributed in the matrix phase and the composite coating showed the lowest wear rate of 2.82 × 10⁻⁶ mm³ N⁻¹ m⁻¹ when the laser scanning rate was 200 mm min⁻¹. The improvement in wear resistance of the coating was ascribed to the formation of WC with high microhardness around 2100 HV_0.1 and good bonding with the matrix phase.

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来源期刊

Journal of Thermal Spray Technology 工程技术-材料科学：膜

CiteScore

5.20

自引率

25.80%

发文量

198

审稿时长

2.6 months

期刊介绍： From the scientific to the practical, stay on top of advances in this fast-growing coating technology with ASM International''s Journal of Thermal Spray Technology. Critically reviewed scientific papers and engineering articles combine the best of new research with the latest applications and problem solving. A service of the ASM Thermal Spray Society (TSS), the Journal of Thermal Spray Technology covers all fundamental and practical aspects of thermal spray science, including processes, feedstock manufacture, and testing and characterization. The journal contains worldwide coverage of the latest research, products, equipment and process developments, and includes technical note case studies from real-time applications and in-depth topical reviews.