氧化和水对钢轨摩擦的影响——新的试验方法和摩擦制图

IF 1.6 Q4 MATERIALS SCIENCE, COATINGS & FILMS
Reuben Kempka, R. Falconer, D. Gutsulyak, R. Lewis
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引用次数: 2

摘要

摘要开发了一种新的摩擦测试方法,使用销-板摩擦计来测试和可视化存在氧化物的表面上的摩擦系数,以检查低附着力问题。每次通过试验表面时都会记录摩擦试验数据,显示摩擦如何随机械作用而变化。进行轨旁环境监测和轨头擦拭,以调查轨头的物理和化学环境。为了模拟“湿轨”条件,在钢轨钢基体上合成并沉积氧化铁。在钢轨钢基体上沉积磁铁矿、赤铁矿、针铁矿和鳞片青石的粉末氧化物层,以研究单个氧化物。测试前使用X射线衍射和扫描电子显微镜分析成分。当将水单独施加到表面上时,形成磁铁矿、赤铁矿和鳞屑青石。仅在高粗糙度、氧化点蚀区域外的氧化样品表面上观察到低摩擦,但这些条件很难实现,而且是瞬态的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of oxide and water on friction of rail steel – new test method and friction mapping
ABSTRACT A novel tribo-testing method using a pin-on-plate tribometer was developed to test and visualize the coefficient of friction over surfaces with oxides present to examine low adhesion issues. Tribo-test data was recorded each pass over test surfaces showing how friction changes with mechanical action. Trackside environmental monitoring and railhead swabbing was performed to investigate the physical and chemical environment of the railhead. Iron oxides were both synthesized on and deposited on rail steel substrates to simulate ‘wet-rail’ conditions. Powdered oxide layers of magnetite, haematite, goethite and lepidocrocite were deposited on rail steel substrates to investigate individual oxides. Composition was analysed using X-ray diffraction and scanning electron microscopy before testing. Magnetite, Haematite and Lepidocrocite were formed when water alone was applied to the surfaces. Low friction was observed on oxidized sample surfaces only outside high roughness, oxide pitted, areas, but these conditions were shown to be difficult to achieve and transient.
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来源期刊
Tribology - Materials, Surfaces & Interfaces
Tribology - Materials, Surfaces & Interfaces MATERIALS SCIENCE, COATINGS & FILMS-
CiteScore
2.80
自引率
0.00%
发文量
15
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