高速电弧喷涂FeCrBSiMnNbW非晶纳米晶涂层组织及性能  

Structure and Property of FeCrBSiMnNbW Amorphous and Nanocrystalline Coating Prepared by High Velocity Arc Spraying

作　　者：梁秀兵[1,2] 王林磊[3] 陈永雄[2] 张志彬[3,4] 郭伟[3] 

机构地区：[1]装甲兵工程学院科研部,北京100072 [2]机械产品再制造国家工程研究中心,北京100072 [3]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 [4]北京工业大学材料学院,北京100142

出　　处：《装甲兵工程学院学报》2012年第5期91-94,共4页Journal of Academy of Armored Force Engineering

基　　金：国家"863"计划项目(2009AA03Z342);国家自然科学基金资助项目(50905185)

摘　　要：研究开发了一种FeCrBSiMnNbW新型喷涂粉芯丝材,并采用自动化高速电弧喷涂技术在镁合金基体上制备了FeCrBSiMnNbW非晶纳米晶涂层。对Fe基非晶纳米晶涂层和传统的3Cr13涂层的组织结构、力学性能以及油润滑条件下的摩擦学性能进行了对比分析,结果表明:与3Cr13涂层相比,铁基非晶纳米晶涂层组织更加致密,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,使得涂层具备更好的摩擦学性能。A new type of FeCrBSiMnNbW spraying cored wire is developed, and the FeCrBSiMnNbW a- morphous and nanocrystalline coating is prepared on substrate of AZ91 magnesium alloy by using an auto- matic high velocity arc spraying technique. The microstructure, mechanical properties and tribology prop- erties under oil lubrication 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, and denser structure. Due to the formation of amorphous and nanocrystalline phase, the FeCrBSiMnNbW coating performs an excel- lent wear resistance.

关 键 词：镁合金 高速电弧喷涂 非晶纳米晶 涂层 

分 类 号：TG174.4[金属学及工艺—金属表面处理]