Metals and Materials International ( IF 3.3 ) Pub Date : 2021-07-28 , DOI: 10.1007/s12540-021-00994-9 Mohammadhassan Badihehaghdam 1 , Farzaneh Khast 1 , Seyyed Mohammad Mousavi Khoie 2 , Mobin Safarzadeh Khosrowshahi 3
|
Ni–P electroless coatings have already proven their ability to improve the tribological properties of various materials. This is possible due to their high hardness, good wear and corrosion resistance. However, the inclusion of AlN nanoparticles into Ni–P matrix can enormously enhance their properties. The aim of the present paper is to develop electroless Ni–P-AlN composite coatings as well as studying the effect of the incorporation of AlN particles on the structure, electrochemical, and mechanical properties of Ni–P alloy coating was studied. The morphology of the coatings were characterized using scanning electron microscopy. In addition, X-ray diffraction was conducted to characterize the structure of the coatings. The microstructural study showed that a uniform and fine-grained coating was accessible while using aluminum nitride. The addition of AlN particles resulted in higher hardness values and improved the wear resistance of the Ni–P coating. Another attainment of this study was to investigate the effect of heat treatment on the attributes of Ni–P-AlN composite coating, which results showed heat treating at 400 °C for 1 h led to the improvement of the chemical and mechanical properties on both the Ni–P and the Ni–P-AlN coatings. The maximum hardness value obtained was 870 HV100 after performing the heat treatment on the nanocomposite coating. The same sample revealed a lower wear rate compared with that of the other samples. Also, the presence of AlN nanoparticles as well as heat treatment resulted in the significant enhancement of the corrosion resistance compared with that of the Ni–P coating.
Graphic Abstract
中文翻译：
化学镀Ni-P-AlN纳米复合涂层的机械性能和电化学行为
Ni-P 化学镀层已经证明它们能够改善各种材料的摩擦学性能。这是可能的，因为它们具有高硬度、良好的耐磨性和耐腐蚀性。然而，将 AlN 纳米颗粒包含在 Ni-P 基体中可以极大地增强它们的性能。本论文的目的是开发化学镀 Ni-P-AlN 复合涂层，并研究了 AlN 颗粒的掺入对 Ni-P 合金涂层的结构、电化学和机械性能的影响。使用扫描电子显微镜表征涂层的形态。此外，还进行了 X 射线衍射以表征涂层的结构。微观结构研究表明，在使用氮化铝时，可以获得均匀且细粒度的涂层。AlN 颗粒的添加导致更高的硬度值并提高了 Ni-P 涂层的耐磨性。本研究的另一个成果是研究了热处理对 Ni-P-AlN 复合涂层属性的影响，结果表明，在 400 °C 下热处理 1 h 可改善涂层的化学和机械性能。 Ni-P 和 Ni-P-AlN 涂层。获得的最大硬度值为 870 HV对纳米复合涂层进行热处理后100。与其他样品相比，同一样品显示出较低的磨损率。此外，与 Ni-P 涂层相比，AlN 纳米颗粒的存在以及热处理导致耐腐蚀性显着提高。
京公网安备 11010802027423号