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首页> 外文期刊>RSC Advances >Studies on the electrodeposition and characterization of PTFE polymer inclusion in Ni-W-BN nanocomposite coatings for industrial applications
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Studies on the electrodeposition and characterization of PTFE polymer inclusion in Ni-W-BN nanocomposite coatings for industrial applications

机译：基于W-W-BN纳米复合涂料的PTFE聚合物夹层电沉积及表征的工业应用研究

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摘要

A Ni-W-BN-PTFE nanocomposite coating with excellent corrosion and friction resistance alongside hardness and a smooth surface was developed. This was achieved by introducing polytetrafluoroethylene (PTFE) polymer to an optimized Ni-W-BN nanocomposite coating deposited on a mild steel substrate by direct current (DC) and pulse current (PC) methods. The deposition was characterized using field-emission scanning electron microscopy (FE-SEM), energy dispersive X-ray analysis (EDAX) and X-ray diffractometry (XRD). The microhardness and friction resistance of the coatings were measured by using a Vicker's microhardness tester and a TR-101-M4 scratch tester. The contact angle (CA) of a water droplet on the surface of the nanocomposite coating was measured by optical contact goniometry (OCA 35). The corrosion behaviour was measured using Tafel polarization and impedance methods in 3.5% NaCl solution. It was observed that the co-deposition of PTFE solid lubricant particles on the Ni-W-BN nanocomposite coating resulted in a comparatively smooth surface, higher microhardness, a lower friction coefficient, excellent water repellency and enhanced corrosion resistance. The PC method showed enhanced performance over the DC coating due to uniform and smaller grain deposits.
机译：开发了具有优异腐蚀和耐摩擦性的Ni-W-Bn-PTFE纳米复合涂层，具有硬度和光滑表面。通过将聚四氟乙烯（PTFE）聚合物将聚四氟乙烯（PTFE）聚合物引入通过直流（DC）和脉冲电流（PC）方法沉积在温和钢基板上的优化的Ni-W-BN纳米复合涂层来实现。使用现场排放扫描电子显微镜（Fe-SEM），能量分散X射线分析（eDAX）和X射线衍射法（XRD）的沉积特征。通过使用Vicker的显微硬度测试仪和TR-101-M4划痕测试仪测量涂层的显微硬度和摩擦阻力。通过光学接触焦点（OCA 35）测量纳米复合涂层表面上的水滴的接触角（CA）。使用3.5％NaCl溶液中的Tafel偏振和阻抗方法测量腐蚀行为。观察到，PTFE固体润滑剂颗粒对Ni-W-BN纳米复合涂层的共沉积导致相对光滑的表面，更高的微硬度，较低的摩擦系数，优异的防水性和增强的耐腐蚀性。由于均匀且较小的谷粒沉积物，PC方法显示出对DC涂层的增强性能。

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  • 来源
    《RSC Advances》 |2015年第90期|共11页
  • 作者

    Sangeetha S.; Kalaignan G. Paruthimal;

  • 作者单位

    Alagappa Univ Dept Ind Chem Adv Nanocomposite Coatings Lab Karaikkudi 630003 Tamil Nadu India;

    Alagappa Univ Dept Ind Chem Adv Nanocomposite Coatings Lab Karaikkudi 630003 Tamil Nadu India;

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  • 正文语种 eng
  • 中图分类 化学;
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