论文部分内容阅读
采用冷喷涂技术在AZ80镁合金表面制备420不锈钢耐磨涂层,开展喷涂工艺参数和涂层组织结构研究,并初步比较耐磨涂层与38Cr Si钢的摩擦学性能。结果表明:随着喷枪移动速度的下降,涂层的孔隙率逐渐下降;涂层形成过程中,420不锈钢粉末中的奥氏体相发生应变诱导马氏体相变,在一定程度上提高了涂层硬度;涂层在摩擦过程中的摩擦磨损机制表现为磨粒磨损和黏着磨损;涂层的耐磨性能显著优于38Cr Si钢。
Cold-spray technique was used to prepare 420 stainless steel wear-resistant coating on AZ80 magnesium alloy. The spraying process parameters and coating structure were studied. The tribological properties of wear-resistant coating and 38Cr Si steel were compared. The results show that the porosity of the coating decreases with the decrease of the moving speed of the spray gun. During the formation of the coating, the strain-induced martensitic transformation occurs in the austenite phase of the 420 stainless steel powder, Layer hardness; friction and wear mechanism of the coating in the friction process showed abrasive wear and adhesive wear; coating wear resistance was significantly better than the 38Cr Si steel.