海洋构筑物表面等离子熔覆TiC/Ni复合材料涂层的人体步进防滑性能

Human stepping non-skid property of plasma transferred Arc cladding TiC/Ni composite coating on offshore structures

随着海洋活动增加,军舰、商船、海上钻井平台等海洋构筑物表面滑摔现象频发,已经严重影响人员安全和海洋事业的发展。为了解决这个问题,世界各国纷纷利用表面处理技术制备各类涂层,提高海洋构筑物表面的防滑性能。本试验采用等离子熔覆技术在45钢表面制备TiC/Ni合金粉末制备人体步进防滑涂层,分析了涂层步进摩擦系数、显微组织、摩擦磨损性能、涂层材料和表面形貌对涂层防滑性能的影响。结果表明:加入TiC不仅提高了涂层的耐磨性,还提高了涂层的步进摩擦系数。随着TiC含量的增加,涂层摩擦系数和耐磨性均增加,除此之外涂层表面三维形貌、涂层材料都会对步进摩擦产生影响,并且干态摩擦系数大于湿态摩擦系数;相对于等离子喷涂制备的涂层,等离子熔覆制备的涂层虽然步进摩擦系数略低,但耐磨性明显提高。

With the increase of offshore activities, slipping phenomenon on the surface of offshore structures such as warships, merchant ships, offshore drilling platforms, etc. has seriously affected the safety of personnel as well as the development of offshore facilities. In order to increase the slip resistance of the surface of offshore structure, experimenters all around the world have used surface treatment technology to prepare coatings. In this study, TiC/Ni alloy powder was coated on 45 steel by Plasma Transferred Arc, then the effect of friction and wear properties, microstructure and coating materials on the slip resistance of the coating were analyzed. The results show that the wear resistance and the step friction coefficient of the coating were improved by the addition of TiC. With the increase of TiC content, the step friction coefficient and wear resistance of the coating are improved. In addition, the step friction coefficient is affected by the surface morphology and the material of coating, while the step friction coefficient in the dry atmosphere is greater than that in the wet atmosphere. Compared with the coating prepared by plasma spraying technology, the coating prepared by plasma transferred arc has a obvious superiority of the wear resistance in spite of a low step friction coefficient.