The Kirkendall effect on erosion resistance of chrome-coated 25Cr3Mo2WNiV and 30SiMn2MoV gun barrel steels  

作　　者：C.H.Dou P.F.Jin C.Z.Wang J.J.Li C.Zhang J.F.Huang C.Zhang 

机构地区：[1]Key Laboratory for Advanced Materials Processing State,State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing 100083,China [2]National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials,School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471003,China

出　　处：《Journal of Materials Science & Technology》2024年第10期246-255,共10页材料科学技术（英文版）

基　　金：Technology Fund of the Ministry of science and technology(No.2020-JCJQ-JJ-248);Fundamental Research Funds for the Central Universities(No.FRF-GF-20-21B);National Natural Science Foundation of China(No.52101072);The authors would like to express their gratitude for the experimental contributions and helpful suggestions from Dr.T.L.Sun.

摘　　要：This study aimed to investigate the erosion behavior and mechanism of a newly developed 25Cr3Mo2WNiV steel with a chrome coating using promoted ignition combustion tests.The erosion threshold pressure and temperature of the chrome-coated 25Cr3Mo2WNiV steel were determined to be 0.2 MPa and 254.3 K higher than those of traditional chrome-coated 30SiMn2MoV steel.Furthermore,Kirkendall voids and inter-diffusion between the Cr coating and matrix were first observed before ero-sion.The improved erosion resistance of the chrome-coated 25Cr3Mo2WNiV steel was attributed to the suppression of the Kirkendall effect,which minimized heat generation at the Cr/matrix interface by pre-venting oxygen diffusion and reducing oxygen affinity.

关 键 词：Erosion resistance Kirkendall effect Cr coating Gun steel 

分 类 号：TE985[石油与天然气工程—石油机械设备]