超音速活性电弧制备锅炉用耐磨涂层性能研究
Study on performance of wear-resistant coating for boiler with supersonic active arc spraying
伏利 1陈小明 1刘伟 2马红海2
作者信息
- 1. 水利机械及其再制造技术浙江省工程实验室,浙江杭州310012;水利部产品质量标准研究所,浙江杭州310012;水利部杭州机械设计研究所,浙江杭州310012
- 2. 水利部产品质量标准研究所,浙江杭州310012;水利部杭州机械设计研究所,浙江杭州310012
- 折叠
摘要
以FeCrNiBSi丝材为喷涂材料,采用FlameArc超音速活性电弧喷涂系统在Q235钢为基体的工业锅炉用材料表面制备出结合强度高、耐磨性强的涂层;通过金相观察、拉伸试验、摩擦磨损试验,分别评价FeCrNiBSi涂层的孔隙率、显微硬度、结合强度和耐磨损性能;并通过扫描电子显微镜观察涂层微观形貌和磨损形貌.结果表明,涂层与基体结合良好,界面处未见任何分离,涂层结构比较致密,孔隙较少,孔隙率为0.71％,硬度为720 HV0.3,与基体结合强度达到60 MPa.相对于Q235钢,FeCrNiBSi涂层具有优异的抗磨损性能,其抗磨损性能是Q235钢的28倍.FeCrNiBSi涂层磨损机理为显微犁削和黏着磨损,耐磨性良好,具有良好的应用前景.
Abstract
Using FeCrNiBSi wire as coating material,the coating with high bonding strength and strong wear re sistance was prepared on the surface of the industrial boiler with supersonic active arc spraying system on Q235 steel substrate.The porosity,microhardness,bonding strength and wear resistance of FeCrNiBSi coating were evaluated by metallographic observation,tensile test,friction and wear test.The microstructure and wear morphology of the coating were also observed by scanning electron microscope.The results show that the coating has good adhesion to the substrate,no separation is found at the interface.The coating structure is relatively dense with porosity of 0.71％ and hardness of 720 HV0.3.The bonding strength between the coating and the matrix is 60 MPa.Compared to Q235 steel,FeCrNiBSi coating has excellent wear resistance,which is 28 times that of Q235 steel.The wear mechanism of FeCrNiBSi coating is micro-ploughing and adhesive wear.The coating has good wear re sistance and good application prospect.
关键词
超音速活性电弧喷涂/Q235/FeCrNiBSi/工业锅炉/磨损Key words
supersonic active arc spraying/Q235/FeCrNiBSi/industrial boiler/wear引用本文复制引用
基金项目
浙江省科技计划项目(2014C31156)
水利部拔尖人才专项资金项目(2015132-4)
出版年
2018
NETL
NSTL
维普
万方数据