Substrate surface finish effects in duplex coatings of PAPVD TiN and CrN with electroless nickel-phosphorus interlayers
Substrate surface finish effects in duplex coatings of PAPVD TiN and CrN with electroless nickel-phosphorus interlayers
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DOI：
10.1016/0257-8972(95)02529-4
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发表时间：
1996-06-01
影响因子：
5.4
通讯作者：
Garside, B
中科院分区：
文献类型：
--
作者：
BinSudin, M;Leyland, A;Garside, B
将硬涂层材料存款到各种基材表面光洁度上并且仍然保持足够的结构和功能性质的能力是寻求优化产品经济性的非常期望的目标。更好的表面光洁度需要更长和更复杂的精加工工艺，这将导致大量的额外成本。在这项调查中，准备了两组不同的基板表面粗糙度的一些适当的测试程序。本研究所涉及的测试包括显微硬度、表面轮廓仪、划痕附着力及湿砂橡胶轮磨耗测试。还进行了电化学腐蚀测试。结果表明，可以优化基板粗糙度，以实现成本和性能方面的最佳折衷。特别地，无电镀镍-磷（ENiP）中间层的添加有益于使衬底与近表面效应隔离并且允许使用更粗糙的表面光洁度。
The ability to deposit hard coating materials on to a wide range of substrate surface finishes and still maintain adequate structural and functional properties is a very desirable objective in the quest to optimise product economics. A better surface finish requires longer and more elaborate finishing processes which will result in substantial additional costs. In this investigation two different groups of substrate surface roughnesses were prepared for a number of appropriate testing procedures. The tests involved in this study were microhardness, surface profilometry, scratch adhesion and the wet sand rubber wheel abrasive test. Electrochemical corrosion testing was also carried out. The results reveal that the substrate roughness can be optimised to achieve the best compromise in terms of cost and performance. The addition of an electroless nickel-phosphorus (ENiP) interlayer, in particular, is beneficial in isolating the substrate from near-surface effects and in permitting the use of rougher surface finishes.