发光复合冷喷涂层的组织结构及发光性能研究
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摘要
目的在45#钢表面制备可高效快捷监测涂层摩擦磨损状况的耐磨自敏涂层(Cu-14A1-X/SrAl2O4:Eu2+,Dy3+)。方法用冷喷涂方法,在45#钢基体表面制备含不同体积分数的铝酸锶与高铝青铜粉末的复合发光涂层。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)和荧光分光光度计,分析了荧光粉比例对自敏复合发光涂层的相组成、发光性能、表面及截面形貌的影响。结果复合涂层的物相与原始粉末基本相同。随着涂层粉体中铝酸锶磷光粉体积分数的增加,相同工艺下制备的涂层厚度逐渐增大。三种涂层与基体的结合强度随着铝酸锶粉末颗粒所占的比重增大,呈现出先增大后略微降低的趋势。同时,随着磷光粉体积分数的改变,铝酸锶颗粒在复合涂层表面的沉积率最大为13.6%,且沉积率变化的趋势逐渐减小,相应地,涂层的发光强度也降低。结论高铝青铜与铝酸锶粉末配比为7∶3时,涂层发射光谱符合4f65d1→4d7的宽带发射,在受到激发后,均发出耀眼的黄绿色光,具有很好的指示效果,且铝酸锶粒子对涂层起钉扎作用,沉积好,结合强度高。
The work aims to prepare wear-resistant and self-sensing coating(Cu-14 A1-X/SrAl2 O4:Eu2+,Dy3+) on 45# steel toquickly and efficiently monitor the friction and wear conditions of coating. The luminous composite coatings with differentvolume fractions of strontium aluminate and high aluminum bronze powders were fabricated on 45# steel by cold spraying. Theeffects of phosphors content on the phase composition, luminescent properties, surface morphology and cross section morphol-ogy of the self-sensing composite luminescent coating were analyzed by XRD, SEM and fluorescence spectrophotometer. Thephase composition of Cu-14 A1-X/SrAl2 O4:Eu2+,Dy3+ was same as that of original powders. As the volume fraction of strontiumaluminate phosphate powders in coating increased, the thickness of coating prepared under the same process gradually in-creased. The bonding strength between three kinds of coatings and the substrate increased with the growth of strontium alumi-nate powder particles and then decreased slightly. Meanwhile, with the change of volume fraction of phosphors, the maximumdeposition rate of barium aluminate particles on the surface of the composite coating was 13.6% and then gradually decreasedand the corresponding luminous strength of coating also decreased. When the mix ratio of high aluminum bronze and bariumaluminate particles is 7 : 3, the emission spectrum of coating meets the broadband emission 4 f65 d1→4 d7. Under stimulation,dazzling yellow-green light will be emitted and good indication effects will be obtained. Barium aluminate particles can fix thecoating and has good deposition effects and high bonding strength.
The work aims to prepare wear-resistant and self-sensing coating(Cu-14 A1-X/SrAl2 O4:Eu2+,Dy3+) on 45# steel toquickly and efficiently monitor the friction and wear conditions of coating. The luminous composite coatings with differentvolume fractions of strontium aluminate and high aluminum bronze powders were fabricated on 45# steel by cold spraying. Theeffects of phosphors content on the phase composition, luminescent properties, surface morphology and cross section morphol-ogy of the self-sensing composite luminescent coating were analyzed by XRD, SEM and fluorescence spectrophotometer. Thephase composition of Cu-14 A1-X/SrAl2 O4:Eu2+,Dy3+ was same as that of original powders. As the volume fraction of strontiumaluminate phosphate powders in coating increased, the thickness of coating prepared under the same process gradually in-creased. The bonding strength between three kinds of coatings and the substrate increased with the growth of strontium alumi-nate powder particles and then decreased slightly. Meanwhile, with the change of volume fraction of phosphors, the maximumdeposition rate of barium aluminate particles on the surface of the composite coating was 13.6% and then gradually decreasedand the corresponding luminous strength of coating also decreased. When the mix ratio of high aluminum bronze and bariumaluminate particles is 7 : 3, the emission spectrum of coating meets the broadband emission 4 f65 d1→4 d7. Under stimulation,dazzling yellow-green light will be emitted and good indication effects will be obtained. Barium aluminate particles can fix thecoating and has good deposition effects and high bonding strength.
引文
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[16]刘晓林,魏家良,陈建峰,等.纳米铝酸锶长余辉发光粉体的制备与性能表征[J].功能材料,2008,39(7):1074-1077.LIU Xiao-lin,WEI Jia-liang,CHEN Jian-feng,et al.Preparation and characterization of nano-scaled long afterglow aluminates phosphors[J].Journal of functional materials,2008,39(7):1074-1077.
[2]曹俊,陈连平,李翠云.稀土掺杂铝酸锶长余辉薄膜制备方法的研究现状[J].上海有色金属,2016,37(4):171-175.CAO Jun,CHEN Lian-ping,LI Cui-yun.Research status of preparation methods of long-persistent thin films with rare earth mixing strontium aluminate[J].Shanghai nonferrous metals,2016,37(4):171-175.
[3]耿杰,吴召平,陈玮,等.SrAl2O4:Eu2+,Dy3+发光粉体的长余辉特性研究[J].无机材料学报,2003,18(2):480-484.GENG Jie,WU Zhao-ping,CHEN Wei,et al.Properties of long after glow SrA12O4:Eu2+,Dy3+phosphor[J].Journal of inorganic materials,2003,18(2):480-484.
[4]路阳,张巧,李文生,等.新型铝青铜合金粉体材料涂层耐腐蚀性能研究[J].粉末冶金技术,2010,28(2):105-109.LU Yang,ZHANG Qiao,LI Wen-sheng,et al.Study of corrosion behavior of powder material of aluminum bronze coatings[J].Powder metallurgy technology,2010,28(2):105-109.
[5]刘卫,余敏,李文亚.真空热处理对冷喷涂Ni-Al2O3复合涂层组织与显微硬度的影响[J].热加工工艺,2010,39(24):196-198.LIU Wei,YU Min,LI Wen-ya.Effect of vacuum heat treatment on microstructure and microhardness of Ni-Al2O3composite coating prepared by cold spraying[J].Hot working technology,2010,39(24):196-198.
[6]柳敏志,李相波,程旭东.冷喷涂技术的最新进展及应用研究[J].热加工工艺,2012,41(20):175-177.LIU Min-zhi,LI Xiang-bo,CHENG Xu-dong.New development and application of cold spray technology[J].Hot working technology,2012,41(20):175-177.
[7]MURATORE C,CLARKED R,JONESJ G,et al.Smart tribological coatings with wear sensing capability[J].Wear,2008,265(5):913-920.
[8]HE Y,WANG S C,WALSH F C,et al.The monitoring of coating health by in-situ luminescent layers[J].RSC advances,2015,5(53):42965-42970.
[9]周峰,傅迎庆,高阳.等离子喷涂Sr Al2O4涂层的发光性能[J].稀有金属材料与工程,2009,38(2):770-772.ZHOU Feng,FU Ying-qing,GAO Yang.Luminescence characteristics of SrAl2O4 ceramics coatings deposited by plasma spraying[J].Rare metal materials and engineering,2009,38(2):770-772.
[10]杜连超,李文生,何玲,等.高铝青铜磷光复合冷喷涂层的发光及摩擦磨损性能[J].表面技术,2015,44(8):31-37.DU Lian-chao,LI Wen-sheng,HE Ling,et al.Luminescence and wear properties of cold sprayed Cu-14Al-X/phosphorescence composite coating[J].Surface technology,2015,44(8):31-37.
[11]白小敏,唐建群,吕晓亮,等.冷喷Al/Al2O3涂层的20号碳钢管道在保温层下的腐蚀行为[J].腐蚀与防护,2017,38(1):11-16.BAI Xiao-min,TANG Jian-qun,LYU Xiao-liang,et al.Corrosion behavior of 20#carbon steel with cold sprayed Al-Al2O3 coatings under insulation[J].Corrosion&protection,2017,38(1):11-16.
[12]邱善广.低压冷喷涂铝涂层的防腐性能研究[D].青岛:中国海洋大学,2013.QIU Shan-guang.Research of anti-corrosion of Al coatings by low pressure cold spray technology[D].Qingdao:Ocean University of China,2013.
[13]HUANG G.Antifouling behavior of a low-pressure coldsprayed Cu/Al2O3 composite coating[J].International journal of electrochemical science,2016,11(10):8738-8748.
[14]PEAT T,GALLOWAY A,TOUMPIS A,et al.The erosion performance of particle reinforced metal matrix composite coatings produced by code position cold gas dynamic spraying[J].Applied surface science,2016,396:1623-1634.
[15]HAGEMANN H,LOVY D,YOON S,et al.Wavelength dependent loading of traps in the persistent phosphor Sr Al2O4:Eu2+,Dy3+[J].Journal of luminescence,2016,170:299-304.
[16]刘晓林,魏家良,陈建峰,等.纳米铝酸锶长余辉发光粉体的制备与性能表征[J].功能材料,2008,39(7):1074-1077.LIU Xiao-lin,WEI Jia-liang,CHEN Jian-feng,et al.Preparation and characterization of nano-scaled long afterglow aluminates phosphors[J].Journal of functional materials,2008,39(7):1074-1077.