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首页> 外文期刊>Protection of Metals and Physical Chemistry of Surfaces >Electroless Ni-P/Ni-B-B4C duplex composite coatings for improving the corrosion and tribological behavior of Ck45 steel
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Electroless Ni-P/Ni-B-B4C duplex composite coatings for improving the corrosion and tribological behavior of Ck45 steel

机译：Ni-P / Ni-B-B4C化学复合镀层，用于改善Ck45钢的腐蚀和摩擦学性能

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摘要

Ni-P/Ni-B-B4C duplex composite coatings were deposited on Ck45 by electroless plating process, and their structure, morphology, micro hardness and corrosion resistance were evaluated. The duplex coatings were prepared using dual baths (acidic hypophosphite- and alkaline borohydride-reduced electroless nickel baths) with Ni-P as the inner layer. The coatings were amorphous in as-plated condition and nanocrystallized, and produced nickel borides upon heat-treatment. SEM observations showed that the duplex interface on the Ck45 was uniform, and the compatibility between the layers was good. The Ni-P/Ni-B-B4C coating's microhardness and corrosion resistance of Ni-B-B4C coating as the outer layer were higher than Ni-P coatings. The Ni-P/Ni-B-B4C duplex composite coatings with high hardness and good corrosion resistance properties would expand their scope of applications.
机译：通过化学镀Ni-P / Ni-B-B4C双相复合镀层，并对其结构，形貌，显微硬度和耐蚀性进行了评价。使用Ni-P作为内层的双浴（酸性次磷酸盐和碱性硼氢化物还原的化学镀镍浴）制备双相涂层。镀层在镀覆状态下为非晶态并进行纳米结晶，热处理后生成硼化镍。 SEM观察表明，Ck45上的双相界面是均匀的，并且层之间的相容性良好。 Ni-P / Ni-B-B4C涂层作为外层的显微硬度和耐蚀性均高于Ni-P涂层。具有高硬度和良好耐腐蚀性的Ni-P / Ni-B-B4C双相复合涂层将扩大其应用范围。

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