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Microstructural aspects of abrasive wear of composite powder materials and coatings

机译:复合粉末材料和涂层的磨料磨损的微观结构

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摘要

Depending on the materials structure and properties as well as on wear conditions, the behaviour of various materials (ductile and brittle) at abrasive wear is different. Our studies are focused on different heterogeneous tribological powder materials and coatings of hardmetal-type and metal-matrix structure with mono- and multimodal reinforcement as well on homogeneous conventional steels in abrasive wear applications. To characterise the hardness of composite materials, hardness measurements in different scales (from nano to macro) were performed. Results of abrasive wear tests (solid particle erosion and impact wear) with abrasives of particle size from some hundreds of micrometres to ten millimetres are discussed. Dependences of wear properties (wear resistance and wear mechanisms) at abrasive erosion and impact wear on the microstructure and micromechanical properties are described. Selection criteria (microstructural, qualitative and tribological) of materials and coatings are proposed.
机译:取决于材料的结构和性能以及磨损条件,各种材料(韧性和脆性)在磨料磨损下的行为是不同的。我们的研究专注于不同的摩擦学粉末材料以及具有单峰和多峰增强的硬金属类型和金属基体结构涂层以及磨料磨损应用中的均质常规钢。为了表征复合材料的硬度,进行了不同尺度(从纳米到宏观)的硬度测量。讨论了用几百微米到十毫米大小的磨料进行磨料磨损测试(固体颗粒腐蚀和冲击磨损)的结果。描述了磨蚀时的磨损性能(耐磨性和磨损机理)和冲击磨损对微观结构和微机械性能的依赖性。提出了材料和涂层的选择标准(微观结构,质量和摩擦学)。

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