作　　者： ; ; ; ;

机构地区： 上海交通大学材料科学与工程学院

出　　处： 《铸造技术》 2011年第2期242-247,共6页

摘　　要： 在结晶器铜板表面超音速火焰喷涂WC-12Co涂层,通过SEM、EDS和XRD分析了涂层的表面形貌、成分变化及涂层与基体的结合性能,采用正交试验设计分析4种喷涂工艺参数对涂层孔隙率、显微硬度和结合强度的影响。结果表明,在氧气流量为850 L/min、煤油流量为6.0 g/h、喷涂距离为400 mm、涂层厚度为0.4 mm条件下,涂层的孔隙率较低,显微硬度较高,且结合强度较大,综合性能达到最优。 The WC-12Co coatings were sprayed by High velocity oxygen fuel on the copper substrate of continuous casting mold.The microstructures,component variation of coatings and bonding properties between coatings and substrate,have been studied by SEM,EDS and XRD.The influence of four spraying parameters on porosities and micro hardness,and bonding strength were analyzed by orthogonal experiment.The results showed that the coating has lower porosity,higher micro hardness,larger bonding strength and better comprehensive performance when oxygen flow equals 850 L/min,kerosene flow equals 6.0 g/h,spray distance equals 400 mm and coating thickness equals 0.4 mm.

关 键 词： 超音速火焰喷涂 孔隙率 显微硬度 结合强度

领　　域： [金属学及工艺] [金属学及工艺]