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采用基于机器人的自动化高速电弧喷涂技术在45钢基体上制备了FeCrBSiMnNbY非晶纳米晶涂层。研究了非晶纳米晶涂层在油润滑条件下,不同磨损时间、速度、载荷对涂层的磨损行为。采用扫描电镜(SEM)、能谱分析仪(EDAX)和X射线衍射仪(XRD)对涂层的组织结构进行了表征,利用纳米压痕仪对涂层的力学性能进行了分析,摩擦磨损试验在MM200滑块磨损试验机上进行。结果表明:涂层组织均匀,结构致密,主要由非晶相和α-Fe相纳米晶组成;在相同磨损试验条件下,非晶纳米晶涂层的相对耐磨性为3Cr13涂层的4.6倍,磨损机制主要为脆性疲劳剥落。
A FeCrBSiMnNbY amorphous nanocrystalline coating was prepared on a 45 steel substrate by a robotic-based automated high-speed arc spraying technique. The wear behaviors of amorphous nanocrystalline coatings on the coatings under different conditions of oil lubrication, such as time, velocity and load, were studied. The microstructure of the coating was characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDAX) and X-ray diffractometer (XRD). The mechanical properties of the coating were analyzed by nanoindenter. The friction and wear test The MM200 slider wear test machine. The results show that the microstructure of the coating is uniform and compact, and mainly consists of amorphous phase and α-Fe nanocrystalline. The relative wear resistance of the amorphous nanocrystalline coating is 4.6 times that of the 3Cr13 coating under the same abrasion test conditions , Wear mechanism mainly brittle fatigue spalling.