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首页> 外文会议>International Conference on Surface Modification Technologies >Selection of HVOF-Sprayed Metal Alloy Coatings for Corrosion and Wear Protection
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Selection of HVOF-Sprayed Metal Alloy Coatings for Corrosion and Wear Protection

机译：用于腐蚀和磨损保护的HVOF喷涂金属合金涂层的选择

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A thorough comparative work was performed in order to select corrosion- and wear-resistant HVOF-sprayed metal alloy coatings, suitable for hard chrome replacement. In a first stage, the most corrosion-resistant coatings among six different compositions, namely Co-28Mo-17Cr-3Si (Tribaloy-800), Ni-17Cr-4Fe-4Si-3.5B-1C (Diamalloy-2001), Ni-20Cr-10W-9Mo-4Cu-1C-1B-1Fe (Diamalloy-4006), Ni-22Cr-9Mo-4Nb-5Fe (Inconel-625), Ni-32Mo-16Cr-3Si-2Co (Tribaloy-700) and (WC-12Co)-33Ni-9Cr-3.5Fe-2Si-2B-0.5C, were selected by electrochemical polarisation testing, free immersion tests and Corrodkote tests: Tribaloy-700 proved to be superior to hard chrome plating, Tribaloy 800 arid Diamalloy-4006 offered lower but satisfactory performances. In the second stage, the tribological properties (ball-on-disk testing) of the three selected alloys were investigated. It was also noted that a heat treatment at low temperature can modify their microstructure and tribological properties. Particularly, the Tribaloy-800 coating has particularly better wear resistance than hard chrome plating after the heat treatment. Finally, it was assessed that the heat treatment improves the corrosion resistance of Tribaloy-800 and Diamalloy-4006, whereas it slightly impairs the initially excellent performance of the Tribaloy-700 coating.
机译：进行彻底的比较工作，以选择耐腐蚀的HVOF喷涂金属合金涂层，适用于硬铬更换。在第一阶段，六种不同的组合物中最耐腐蚀的涂层，即Co-28MO-17CR-3Si（Tribaloy-800），Ni-17Cr-4Fe-4Si-3.5b-1c（Diamalloy-2001），Ni- 20Cr-10W-9MO-4CU-1C-1B-1FE（Diamalloy-4006），Ni-22Cr-9MO-4NB-5FE（Inconel-625），Ni-32Mo-16Cr-3Si-2Co（Trimaloy-700）和（ WC-12CO）-33NI-9CR-3.5FE-2SI-2B-0.5C，通过电化学偏振试验选择，免费浸渍试验和曲折试验：Tribaloy-700被证明优于硬铬电镀，二亚尾镀锡 - 4006提供较低但令人满意的表演。在第二阶段，研究了三种选定合金的摩擦学特性（球盘试验）。还注意到，低温下的热处理可以改变它们的微观结构和摩擦学特性。特别是，亚铁-800涂层在热处理后的硬铬镀层具有特别良好的耐磨性。最后，评估了热处理改善了二亚铝和二甘合金-4006的耐腐蚀性，而它略微损害了亚摩尔替二甲酰-700涂层的最初优异的性能。

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