• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Electrochemical Science >Wear and Corrosion Performance of PEO-synthesized SiC Nanocomposite Coatings: Effect of Processing Time and Current Density
【24h】

Wear and Corrosion Performance of PEO-synthesized SiC Nanocomposite Coatings: Effect of Processing Time and Current Density

机译：PEO合成的SiC纳米复合涂层的耐磨性能：加工时间和电流密度的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the present study, a systematic investigation of the effect of the process parameters on the finalproperties of the PEO coatings was done. Protective oxide coatings were prepared on AZ31magnesium alloy by plasma electrolytic oxidation (PEO) process using aluminate-silicate basedelectrolyte containing SiC nanoparticles in different current densities and time intervals.Microstructural characterization of the PEO treated samples was evaluated by scanning electronmicroscopy (SEM) followed by image analysis and energy dispersive spectroscopy (EDS). Wearresistance of the coatings was analyzed by ball-on disc tribometer. The corrosion resistance of thecoatings was also investigated with potentiodynamic polarization and electrochemical impedancespectroscopy (EIS) tests in 3.5 wt.% NaCl solution. It was found that the processing time and currentdensity have a significant influence on the resulting coatings properties, such as microstructure,thickness, composition, hardness, wear and corrosion behavior. The thick coatings produced at highercurrent density and treatment time possess a high hardness and provide a low friction coefficient andwear rate against stainless steel balls. They also improved the corrosion resistance compared with theuncoated magnesium alloy, which can be mainly due to their compactness, thickness andmicrostructure.
机译：在本研究中，对工艺参数对PEO涂层最终性能的影响进行了系统的研究。在不同电流密度和时间间隔下，采用含有铝纳米颗粒的SiC电解质通过等离子电解氧化（PEO）工艺在AZ31镁合金上制备了保护性氧化物涂层。分析和能量色散光谱（EDS）。用球盘式摩擦计分析涂层的耐磨性。还通过在3.5重量％的NaCl溶液中的电位动力学极化和电化学阻抗谱（EIS）测试研究了涂层的耐腐蚀性。已经发现，加工时间和电流密度对所得的涂层性能如显微组织，厚度，组成，硬度，磨损和腐蚀行为具有显着影响。在较高的电流密度和处理时间下生产的厚涂层具有较高的硬度，并且对不锈钢球的摩擦系数和磨损率较低。与未涂覆的镁合金相比，它们还提高了耐腐蚀性，这主要归因于其致密性，厚度和微观结构。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号