镁合金表面电弧喷涂Fe基非晶纳米晶涂层的性能  

Properties of Fe-based Amorphous and Nanocrystalline Coating on Magnesium Alloy Prepared by Arc Spraying

作　　者：王林磊[1] 梁秀兵[2] 陈永雄[1] 郭伟[1] 丁华东[1] 

机构地区：[1]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072 [2]装甲兵工程学院科研部,北京100072

出　　处：《装甲兵工程学院学报》2011年第6期83-87,共5页Journal of Academy of Armored Force Engineering

基　　金：国家自然科学基金资助项目(50735006,50905185)

摘　　要：采用自动化高速电弧喷涂技术在镁合金基体上制备了FeCrBSiMoNbW非晶纳米晶涂层。采用Flir A20M型红外热像仪对Fe基非晶纳米晶喷涂层的表面温度场进行了实时监测。对Fe基非晶纳米晶涂层和传统的3Cr13涂层的组织结构、力学性能以及摩擦学性能进行了对比分析。实验结果表明：Fe基非晶纳米晶涂层组织致密,孔隙率低,具有相对较高的硬度和拉伸结合强度;形成了非晶相和纳米晶相组成的复合结构,使得涂层具备较好的耐磨减摩性能。Automatic high velocity arc spraying technology is used to deposit the Fe-based amorphous and nanocrystalline coating on substrate of AZ91 magnesium alloy.Flir A20M infrared thermal imager is used to monitor the surface temperature field of the Fe-based amorphous and nanocrystalline coating in realtime.The microstructure,mechanical properties and tribologyical properties of the Fe-based amorphous and nanocrystalline coating are investigated.The results show that,as compared with 3Cr13 coating,the Fe-based amorphous and nanocrystalline coating is performed with higher micro-hardness and bonding strength,lower porosity,denser structure,and form the compound structure of amorphous and nanocrystalline phase,enabling the FeCrBSiMoNbW coating with a higher wear resistance and antifriction properties.

关 键 词：镁合金 高速电弧喷涂 铁基非晶纳米晶涂层 

分 类 号：TG174.442[金属学及工艺—金属表面处理]