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Effect of the base material condition on the structure and properties of Al2O3 oxide layers
Indian Journal of Engineering & Materials Sciences ( IF 0.615 ) Pub Date : 2020-05-11
Wladyslaw Skoneczny

The paper presents a new method for modelling oxide layers for tribology related needs. The most recent world trends in the machine-building sector, in particular with reference to piston machines, are heading towards reducing their lubrication and cooling. Hence, a question arises, what the upper layer of a ceramic material should be like in order to maintain low wear and low frictional resistance. An oxide layer for tribological needs has been formed on an AlMg2 alloy as a result of hard anodizing in SAS electrolyte. This electrolyte enables the control of oxide layer production parameters, which allowed obtaining for the tests an oxide coating with a wide range of changes in porosity and micro-hardness µHV. Anodizing has been carried out by means of the direct-current method, using a stabilized feeder, GPR-25H30D, for a constant electrical charge density of 180 Amin/dm2. A lead plate has been acted as the cathode in the anodizing process. By means of a scanning electron microscope (SEM), the surface morphology and structure, and the chemical composition of the layers have been analyzed.

中文翻译:

基材条件对Al2O3氧化物层结构和性能的影响

本文提出了一种为摩擦学相关需求建模氧化物层的新方法。机械制造领域的最新世界趋势,尤其是关于活塞机的趋势,正在朝着减少润滑和冷却的方向发展。因此,产生一个问题,陶瓷材料的上层应该是什么样的,以保持低磨损和低摩擦阻力。在AlMg 2上形成了满足摩擦学要求的氧化层SAS电解质中进行硬质阳极氧化的结果。这种电解质可以控制氧化物层的生产参数,从而可以通过测试获得具有很大孔隙率和微硬度µHV变化范围的氧化物涂层。使用稳定的进料器GPR-25H30D,通过直流电法进行了阳极氧化,恒定电荷密度为180 Amin / dm 2。铅板已在阳极氧化过程中用作阴极。借助于扫描电子显微镜(SEM),已经分析了各层的表面形态和结构以及化学组成。
更新日期:2020-05-11
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