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霍树斌, 王志平, 王佳杰, 王吉孝. CoCrMoSi涂层冷热疲劳和磨损性能[J]. 焊接学报, 2007, (5): 73-76.
引用本文: 霍树斌, 王志平, 王佳杰, 王吉孝. CoCrMoSi涂层冷热疲劳和磨损性能[J]. 焊接学报, 2007, (5): 73-76.
shu
HUO Shubin, WANG Zhiping, WANG Jiajie, WANG Jixiao. Cold-hot fatigue and wear-resistance of CoCrMoSi coatings[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2007, (5): 73-76.
Citation: HUO Shubin, WANG Zhiping, WANG Jiajie, WANG Jixiao. Cold-hot fatigue and wear-resistance of CoCrMoSi coatings[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2007, (5): 73-76.
shu

CoCrMoSi涂层冷热疲劳和磨损性能

Cold-hot fatigue and wear-resistance of CoCrMoSi coatings

    摘要
  • 摘要: 采用超音速火焰喷涂技术,在CrZrCu表面制作了CoCrMoSi涂层。采用光学显微镜、SEM及EDS等方法,对涂层的冷热疲劳性能和抗磨损性能进行了分析研究,并与当前冶金行业大量使用的电镀NiCo镀层进行对比。结果表明,450℃试验条件下,经113次冷热疲劳后,CoCrMoSi合金涂层仍完好无损,而NiCo电镀层循环37.8次就剥落30%以上;CoCrMoSi涂层和NiCo镀层均发生了磨粒磨损和粘着磨损,镀层以粘着磨损为主,同时伴有严重的磨粒磨损,而涂层磨粒磨损不明显,主要表现为粘着磨损。涂层的抗磨损性能远高于电镀层,同样磨削条件下(30min),电镀层失重0.5986g时,喷涂层仅仅失重0.0572g,电镀失重是喷涂的10.5倍还多。

     

    Abstract: CoCrMoSi coating was deposited on CrZrCu with HVOF, and its cold-hot fatigue and war resistance were studied, analyzed and compared with NiCo plated coating widely applied in metallurgy industry.The results show that at 450℃ CoCrMoSi coating possesses high cold-hot fatigue property and it can endure 113 times cold-hot fatigue, while the plated coating only has 37.8 times.Both abrasive wear and adhesion abrasion occurred on the CoCrMoSi coating and NiCo plated coating.Adhesive wear is the main type of wear on the plated coating and it also has serious abrasive wear.But abrasive wear almost is not found on the CoCrMoSi coating, and it only has slight adhesive wear.The wear-resistance of the coating is much higher than that of the plated coating.

     

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