高速火焰喷涂Fe-Al/Cr_3C_2复合涂层的组织与性能  

Microstructures and Properties of HVFS Fe-Al/Cr_3C_2 Composite Coating

作　　者：徐润生[1] 徐滨士[1] 马世宁[1] 董世运[1] 朱子新[1] 刘晓明[2] 

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]内蒙古电力科学研究院,内蒙古呼和浩特010020

出　　处：《金属热处理》2006年第7期46-49,共4页Heat Treatment of Metals

基　　金：国家自然科学基金项目(50235030)

摘　　要：用高速火焰喷涂法在20钢上制备Fe-A l/Cr3C2复合涂层。利用配有能谱仪的扫描电镜分析涂层表面形貌和所含元素,利用X射线衍射仪分析涂层的相组成,并测试了涂层的结合强度、显微硬度、孔隙率等性能。结果表明,高速火焰喷涂Fe-A l/Cr3C2复合涂层中主要包括Fe、A l以及FeA l、Fe3A l、Cr3C2相,Cr3C2增强相呈点状均匀分布涂层中;涂层具有较高的结合强度、硬度和较低的孔隙率。The Fe-Al/Cr3C2 composite coating was prepared on the 20 steel substrate by high velocity flame spraying （HVFS） with Fe-Al/Cr3C2 powders. The surface and the cross-sectional morphologies of the coating were analyzed by SEM with EDAX, and the phases of the coating was analysed by XRD. The adhesion strength and microhardness and porosity were also measured. The results show that the phases of the coating include Fe, Al, FeAl, Fe3Al and Cr3C2, the strengthening Cr3 C2 phase is dotted and uniformly distributed in the coating, the adhesion strength and the microhardness of the coating are high and the porosity of the coating is low.

关 键 词：高速火焰喷涂 Fe-Al/Cr3 C2 组织与性能 

分 类 号：TG174.422[金属学及工艺—金属表面处理]