氧化铝增强纤维对磷酸盐基电熔镁砂涂层性能的影响  

Effect of Alumina Reinforced Fiber on the Properties of Phosphate-Based Electrofused Magnesia Coatings

作　　者：王丽阁[1] 陈心 王恩泽[1] 蔺万鹏 WANG Li-ge;CHEN Xin;WANG En-ze;LIN Wan-peng(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621000,China)

机构地区：[1]西南科技大学材料与化学学院,四川绵阳621000

出　　处：《材料保护》2022年第8期62-66,共5页Materials Protection

摘　　要：为探究在磷酸盐基电熔镁砂涂层中掺入氧化铝增强纤维对涂层性能的影响,采用扫描电镜(SEM)、X射线衍射仪(XRD)研究了涂层的物相组成、孔隙率、抗热震性能与附着性能。结果表明:氧化铝增强纤维能阻碍涂层中微裂纹的扩展、减小孔隙直径、提高孔隙率与均匀性;与无氧化铝增强纤维的涂层相比,当增强纤维的含量为1.6%时,涂层抗热震性能提高了76%;但随着氧化铝增强纤维含量的增加,涂层的残余应力增加,附着性能持续下降。In this paper,the alumina reinforced fiber was added into the phosphate-based electrofused magnesia coating to explore its effect on the performance of the coating.Scanning electron microscope(SEM) and X-ray diffractometer(XRD) were used to study the phase composition,porosity,thermal shock resistance and adhesion properties of the coating.Results showed that alumina reinforced fibers could prevent the expansion of micro-cracks in the coating,reduce the pore diameter and improve the porosity and uniformity.Compared with the case of no such fibers,when the content of fibers was 1.6%,the thermal shock resistance of the coating increased by 76%.However,as the content of aluminum reinforcing fibers increased,the residual stress of the coating also increased,and the adhesion performance of the coating decreased continuously.

关 键 词：磷酸盐基涂层 氧化铝纤维 孔隙率 热震性能 附着性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]