Abstract

This paper studies the formation of cermet coatings by a combined additive manufacturing technology on the basis of cold gas dynamic spraying and subsequent laser irradiation. The coatings are made of titanium and nickel metal powders with ceramic particles of tungsten carbide and boron carbide. Optimal energy parameters are determined for coating deposition by cold gas dynamic spraying and subsequent laser irradiation for powder compositions with different ceramic particles. The microstructure of deposited coatings is studied, and their mechanical properties are measured. It is shown that the combined method of cold gas dynamic spraying and laser irradiation can be used to produce a single-layer cermet coating up to 1 mm thick by sequentially depositing a mixture of powders of different composition, such as B₄C–Ni, B₄C–Ti, WC–Ti. Based on the obtained experimental data, a technique is proposed for a layer-by-layer deposition of thick (≈4 mm) cermet coatings of composition 40% WC + 60% (0.94Ti + 0.06Al) by cold gas dynamic spraying and subsequent laser irradiation.

中文翻译：

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通过随后的激光辐照的冷气体动态喷涂在Ti，Ni，WC和B 4 C的基础上沉积金属陶瓷涂层

摘要

本文研究了在冷气体动态喷涂和随后的激光辐照的基础上，采用组合增材制造技术对金属陶瓷涂层的形成。涂层由钛和镍金属粉末以及碳化钨和碳化硼的陶瓷颗粒制成。对于具有不同陶瓷颗粒的粉末组合物，通过冷气体动态喷涂和随后的激光辐照确定用于涂层沉积的最佳能量参数。研究了沉积涂层的微观结构，并测量了其机械性能。结果表明，通过顺序沉积不同成分的粉末（例如B _4）的混合物，可以将冷气动态喷涂和激光辐照的组合方法用于生产厚达1毫米的单层金属陶瓷涂层。C–Ni，B ₄ C–Ti，WC–Ti。根据获得的实验数据，提出了一种通过冷气动态喷涂逐层沉积组成为40％WC + 60％（0.94Ti + 0.06Al）的厚（≈4mm）金属陶瓷涂层的技术激光照射。