Abstract—

The work is devoted to the study of the tribological properties of functional coatings based on the FeO oxide matrix, additionally doped with boron oxide B₂O₃ and zirconium dioxide ZrO₂. The coatings are obtained by highly concentrated short-pulse laser processing of powder compositions previously applied to metal surfaces. The resulting coatings are subject to wear tests under conditions of dry sliding friction with fixation of the friction coefficient, depending on the applied load and the composition of the powder composition. The results give an idea of the degree of change in the coefficient of friction of coatings depending on the powder compositions, as well as their alloying. It has been confirmed that additional alloying with boron oxide has a positive effect on the tribological performance of the coating; in particular, the introduction of 4% boron oxide reduces the coefficient of dry sliding friction to a unique 0.09–0.10. At the same time, a more stable scuffing resistance of friction surfaces is observed, confirmed by studies of surface roughness after testing. A feature of the tribological behavior of the coatings under study is the excessively high temperature background of the tests, reaching 300°C. High temperature and the presence of oxide structures are a catalyst for the formation of stable tribological structures between the rubbing surfaces. The nature of the tribostructures is self-organizing in a “glaze” type and has the property of recovery under friction conditions. After the formation of tribostructures in the friction zone, a significant decrease in temperature and an abrupt decrease in the friction coefficient are observed. With an increase in the amount of boron oxide, the friction coefficient does not decrease so significantly and the minimum value of the dry friction coefficient corresponds to 0.14–0.15, which is caused by a decrease in the cohesive strength of the coating.

中文翻译：

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氧化铁和氧化硼陶瓷减摩涂层的摩擦技术性能

摘要-

这项工作致力于研究基于 FeO 氧化物基体并另外掺杂氧化硼 B ₂ O ₃和二氧化锆 ZrO ₂的功能涂层的摩擦学性能。该涂层是通过对先前施加到金属表面的粉末组合物进行高度集中的短脉冲激光加工而获得的。所得涂层在固定摩擦系数的干滑动摩擦条件下进行磨损测试，这取决于所施加的载荷和粉末组合物的组成。结果表明涂层摩擦系数的变化程度取决于粉末成分及其合金化。已证实添加氧化硼合金化对涂层的摩擦学性能具有积极影响；特别是，4%氧化硼的引入将干滑动摩擦系数降低至独特的0.09-0.10。同时，观察到摩擦表面具有更稳定的耐磨损性，这通过测试后的表面粗糙度研究得到证实。所研究涂层的摩擦学行为的一个特点是测试的温度背景过高，达到 300°C。高温和氧化物结构的存在是摩擦表面之间形成稳定摩擦结构的催化剂。摩擦结构的性质是“釉”类型的自组织，并且具有在摩擦条件下恢复的特性。在摩擦区域形成摩擦结构后，观察到温度显着下降和摩擦系数突然下降。随着氧化硼用量的增加，摩擦系数并没有明显下降，干摩擦系数的最小值对应于0.14~0.15，这是由于涂层的内聚强度下降造成的。