超音速等离子高铝青铜磷光粒子复合发光涂层的性能研究

Luminescence and mechanical properties of supersonic plasma spray Cu-14Al-X/phosphorescence composite coatings

采用超音速等离子喷涂技术在45#钢基体表面制备了Cu-14Al-X与SrAl_2O_4∶Eu^(2+),Dy^(3+)复合发光涂层,研究了不同喷涂工艺参数(H_2气流量)对制备涂层性能的影响。利用XRD、SEM、EDS及荧光/磷光发光光度计研究分析了喷涂层物相组织、形貌结构及其发光性能。结果表明,涂层均由Al_(0.5)Fe_(0.5)、AlFe_3、Cu_9Al_4、SrAl_2O_4相及少量SrAl_4O_7和SrFe_2O_4构成。随着H_2气流量从1L/min到16L/min增加,喷涂材料沉积率增大,磷光粒子沉积率增加明显,同时,涂层的发光强度随H_2气流量增加而增强,涂层结合强度、显微硬度及致密性也随H_2气流量增加而显著提高。

Cu-14Al-X/SrAl_2O_4∶ Eu^(2+),Dy^(3+) phosphorescence composite coating were prepared on 45#carbon steel substrate by using different spraying parameters(the flow rate of secondary gas H_2)with supersonic plasma spraying.The phase,microstructures,and luminescence properties were investigated by XRD,SEM,EDS and fluorescent photometer technologies.The results show that all three coatings are mainly composed of Al_(0.5)Fe_(0.5),AlFe_3,Cu_9Al_4,SrAl_2O_4 phase with slightly SrAl_4O_7 and SrFe_2O_4 phase;when the flow rate of H_2 increases from 1L/min to 16L/min,significant increase was observed in terms of the deposition rate of the spraying material,especially the deposition rate of phosphorescence particles,while the improvement is also observed in luminescence intensity,bonding strength,micro-hardness and density.