典型文献
Laser cladding of NiCrSiB on Monel 400 to enhance cavitation erosion and corrosion resistance
文献摘要：
NiCrSiB modified layer was synthesized on Monel 400 by laser cladding,aiming at improving cavita-tion erosion and corrosion resistance.The microstructure,chemical composition,phase constituents and microhard-ness were investigated using scanning electron microscope(SEM),energy-dispersive spectrometer(EDS),X-ray diffractometry(XRD)and microhardness tester.The cav-itation erosion and corrosion behaviors of the modified layer were also evaluated using an ultrasonic vibrator and potentiodynamic polarization measurement,respectively.Experimental results show that by varying the laser fluence,a hard NiCrSiB modified layer with little airholes,cracks or other defects could be obtained.NiCrSiB modified layer is～1.1 mm in thickness.The microstructure of the mod-ified layer exhibits cellular dendrite,flake-like dendrite and multiple eutectic phase.The modified layer is mainly composed of γ-Ni solid solution,chromium carbide(Cr7C3 and Cr23C6)and Ni3B.The microhardness of the modified layer is～6.8 times that of Monel 400 substrate.Both the cavitation erosion and corrosion resistance of the modified layer are improved.In the cavitation erosion test,the cumulative erosion loss and erosion loss rate of the mod-ified layer are one order of magnitude lower than that of the substrate.In the electrochemical corrosion test,the corro-sion potentials of the substrate and the modified layer are similar.The corrosion current densities of the substrate and the modified layer are 11.12 and 1.95 μA·cm-2,respectively.By comparing their corrosion current densi-ties,the corrosion resistance of the modified layer is about 5.7 times that of the substrate.
文献关键词：
中图分类号：
作者姓名：
Chun-Hua Zhang;Chen-Liang Wu;Song Zhang;Yong-Feng Jia;Meng Guan;Jun-Zhe Tan;Bin Lin
作者机构：
School of Materials Science and Engineering,Shenyang University of Technology,Shenyang 110870,China;Nuclear Power Pump Industry Co.,Ltd.,Shenyang Blower Works Group Corporation,Shenyang 110869,China
文献出处：
引用格式：
[1]Chun-Hua Zhang;Chen-Liang Wu;Song Zhang;Yong-Feng Jia;Meng Guan;Jun-Zhe Tan;Bin Lin-.Laser cladding of NiCrSiB on Monel 400 to enhance cavitation erosion and corrosion resistance)[J].稀有金属（英文版）,2022(12):4257-4265
A类：
NiCrSiB,cavita,microhard,vibrator,airholes
B类：
Laser,cladding,Monel,enhance,cavitation,erosion,corrosion,resistance,modified,layer,was,synthesized,by,laser,aiming,improving,microstructure,composition,phase,constituents,were,investigated,using,scanning,electron,microscope,energy,dispersive,spectrometer,EDS,ray,diffractometry,microhardness,tester,behaviors,also,evaluated,ultrasonic,potentiodynamic,polarization,measurement,respectively,Experimental,results,show,that,varying,fluence,little,cracks,other,defects,could,obtained,thickness,exhibits,cellular,dendrite,flake,like,multiple,eutectic,mainly,composed,solid,solution,chromium,carbide,Cr7C3,Cr23C6,Ni3B,times,substrate,Both,are,improved,In,cumulative,loss,order,magnitude,lower,than,electrochemical,potentials,similar,current,densities,By,comparing,their,about
AB值：
0.415162
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