The research on the high strength and anti-arc ablation coatings applied in steel conductive rail  

作　　者：Yihu Ma Wenbo Yu Chaosheng Ma Guozheng Ma 

机构地区：[1]Center of Materials Science and Engineering,School of Mechanical and Electronic Control Engineering,Beijing Jiaotong University,Beijing 100044,China [2]National Key Lab for Remanufacturing,Army Academy of Armored Forces,Beijing 100072,China

出　　处：《High-Speed Railway》2023年第3期179-184,共6页高速铁路（英文）

基　　金：supported by Beijing Natural Science Foundation(3232011);the Pre-Research Program in National 14th Five-Year Plan(80923010304);the National Natural Science Foundation of China(52130509).

摘　　要：In order to enhance the ablation-resistant performance of stainless-steel conductive rails,Mo coating,410 stainless steel coating and 15 wt%Cr_(2)AlIC particles reinforced 410 stainless steel composite coating were prepared and evaluated.Different from the weak interfacial strength caused by the dissimilar metals between Mo and steel rails,410 stainless steel coating has better interfacial contact with steel rails.The introduction of Cr_(2)AlC into 410 stainless steels further strengthened the mechanical properties of coating by alloy strengthening effect and particle strengthening effect,as the decomposition of Cr_(2)AlC into nano CrC particles is accompanied with the diffusion of Al atoms into 410 stainless steels.It was found that the composite coating can still resist arc erosion at 150 A current,as a dense oxide film formed during the ablation process and the decomposition of Cr_(2)AlC contributed to the heat absorption.

关 键 词：Conductive stainless-steel rails Arc-ablation MAX phase Coating 

分 类 号：U284.2[交通运输工程—交通信息工程及控制]