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A Study of Characteristics of Aluminum Bronze Coatings Applied to Steel Using Additive Technologies

机译：用添加剂技术研究钢上铝青铜涂层的特性

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摘要

The influence of laser power on the microstructural, strength, and tribological characteristics of aluminum bronze coatings applied to steel by laser cladding was studied. It was found that with an increase in laser power, the morphology of the coating surface becomes more uniform without extreme height differences. This study revealed that the coating microstructure corresponds to that of a composite material and consists of a bronze matrix and iron dendrites of different sizes (depending on the laser power). Such a microstructure affects the microhardness indices, which have a scatter of values over the coating thickness. There is a diffusion zone at the steel–bronze interface, which promotes adhesion of the matrix and coating materials. According to the results of tribological tests, the dry friction coefficient for the studied samples is in the range of 0.389–0.574.
机译：研究了激光功率对激光熔覆铝青铜涂层组织，强度和摩擦学性能的影响。发现随着激光功率的增加，涂层表面的形态变得更加均匀，而没有极端的高度差。这项研究表明，涂层的微观结构与复合材料的微观结构相对应，由青铜基体和不同尺寸（取决于激光功率）的铁树枝状晶体组成。这样的显微组织影响显微硬度指数，该显微硬度指数在涂层厚度上具有分散的值。钢-青铜界面处有一个扩散区，可促进基体和涂层材料的粘附。根据摩擦学测试的结果，所研究样品的干摩擦系数在0.389–0.574之间。

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