Characterization of Tin Bronze Substrates Coated by Ag + B83 through Electro-Spark Deposition Method

IF 1.1 Q4 ELECTROCHEMISTRY Surface Engineering and Applied Electrochemistry Pub Date : 2023-05-20 DOI:10.3103/S1068375523020187

Zhang Zhengchuan, V. Tarelnyk, I. Konoplianchenko, Liu Guanjun, Du Xin, Ju Yao

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Abstract—

The composite coatings on the surface of tin bronze substrates were formed by electro-spark deposition applying alternately the soft materials of silver and the alloy Babbitt B83. The effect of their deposition on the mass transfer, the surface roughness, the coating thickness, the surface morphology, the cross-sectional morphology, the elemental composition, and the tribological properties of the composite coatings was investigated using electronic scales, a 3D optical profilometer, a tribometer, and such techniques as scanning electron microscopy, and energy dispersion spectroscopy. The results show that the studied composite coatings were dense, with grains refined and uniformly distributed, and they functioned via the metallurgical fusion with the substrate. The silver and Babbitt B83 optimal process parameters were obtained as follows: the voltage of 60 and 30 V, the duty cycle of 30 and 30%, and the efficiency of 1 and 3 min/cm², respectively. Under the optimal process parameters, the mass transfer was 125.2 mg, the surface roughness of the composite coatings was 19.43 μm, and the maximal thickness of the layers was 80 μm. The minimum friction coefficient of the composite coatings was about 0.177 after the running-in stage. The main wear mechanisms of the composite coatings prepared under the optimal process parameters were plastic deformation and abrasive wear accompanied by slight polishing.

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电火花沉积法表征Ag + B83镀层锡青铜基底

摘要:采用电火花沉积的方法，在锡青铜基体表面交替涂覆软质材料银和合金巴氏合金B83，形成复合镀层。利用电子秤、三维光学轮廓仪、摩擦计以及扫描电子显微镜和能量色散光谱等技术研究了沉积对复合涂层传质、表面粗糙度、涂层厚度、表面形貌、横截面形貌、元素组成和摩擦学性能的影响。结果表明:所制备的复合镀层致密、晶粒细化、分布均匀，通过与基体的冶金熔合发挥作用;得到了银和巴氏B83的最佳工艺参数:电压为60 V和30 V，占空比为30和30%，效率分别为1和3 min/cm2。在最佳工艺参数下，复合膜的传质性能为125.2 mg，表面粗糙度为19.43 μm，膜层最大厚度为80 μm。磨合后复合涂层的摩擦系数最小，约为0.177。在最佳工艺参数下制备的复合涂层的主要磨损机制是塑性变形和磨粒磨损，并伴有轻微抛光。

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来源期刊

Surface Engineering and Applied Electrochemistry Engineering-Industrial and Manufacturing Engineering

CiteScore

1.70

自引率

22.20%

发文量

审稿时长

6 months

期刊介绍： Surface Engineering and Applied Electrochemistry is a journal that publishes original and review articles on theory and applications of electroerosion and electrochemical methods for the treatment of materials; physical and chemical methods for the preparation of macro-, micro-, and nanomaterials and their properties; electrical processes in engineering, chemistry, and methods for the processing of biological products and food; and application electromagnetic fields in biological systems.