Abstract This investigation deals with the study of 1 wt% carbon nanotube (CNT) reinforced high velocity oxy-fuel sprayed conventional and nanostructured WC-Co coatings deposited on Ti-6Al-4V coupons. Coatings were also prepared from the as-received powders for comparison purpose. The reinforced coatings exhibited up to 30%, 10% and 33% increase in hardness, elastic modulus and cohesive strength, respectively. The graphene structure of the CNT was retained in the coating. The reinforced coatings demonstrated a significant reduction in specific wear rate during ball-on-disc tribometry. The forces and specific energy recorded during surface grinding of the reinforced coatings were substantially higher than those of the coatings produced from the as-received powders. The residual stress of the as-sprayed coatings was compressive in nature. The magnitude of this stress increased further on surface grinding.

中文翻译：

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碳纳米管增强HVOF喷涂WC-Co涂层

摘要 本研究涉及沉积在 Ti-6Al-4V 试样上的 1 wt% 碳纳米管 (CNT) 增强的高速氧燃料喷涂常规和纳米结构 WC-Co 涂层的研究。为了比较的目的，还从原样的粉末制备涂层。增强涂层的硬度、弹性模量和内聚强度分别提高了 30%、10% 和 33%。CNT的石墨烯结构保留在涂层中。增强涂层在球盘摩擦测量过程中显示出比磨损率显着降低。在增强涂层的表面研磨过程中记录的力和比能明显高于由原样粉末制成的涂层。喷涂后的涂层的残余应力本质上是压缩的。