Effect of Nb on the corrosion behavior of continuous bulk metallic glass-coated steel wire composites  

作　　者：Xiao-hua Chen Bao-yu Zhang Xi-dong Hui 

机构地区：[1]State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing

出　　处：《International Journal of Minerals,Metallurgy and Materials》2013年第6期589-592,共4页矿物冶金与材料学报（英文版）

基　　金：supports by the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20100006120020);the National Nature Science Foundation of China(Nos.51071018and51271018)

摘　　要：（Zr41.2Ti13.sCu12.sNi10Be22.5）100-~Nb~ （at%, x=0 and 8） bulk metallic glasses （BMGs） were coated on the surface of Q195 steel wires by a continuous coating process. The potentiodynamic polarization tests of these BMGs were conducted in 3.5wt% NaC1 aqueous solution. It is found that the addition of 8at% Nb into Zr41.2Ti13.sCu12.sNi10Be22.5 alloy results in the improvement of corrosion resistance with the pitting potential of -52 mV, the open circuit potential of-446 mV, and the corrosion current density of 9.86x 10-6 mA/cm2. This may be attributed to that Nb is beneficial to passivate and stabilize Zr and Ti.（Zr41.2Ti13.sCu12.sNi10Be22.5）100-~Nb~ （at%, x=0 and 8） bulk metallic glasses （BMGs） were coated on the surface of Q195 steel wires by a continuous coating process. The potentiodynamic polarization tests of these BMGs were conducted in 3.5wt% NaC1 aqueous solution. It is found that the addition of 8at% Nb into Zr41.2Ti13.sCu12.sNi10Be22.5 alloy results in the improvement of corrosion resistance with the pitting potential of -52 mV, the open circuit potential of-446 mV, and the corrosion current density of 9.86x 10-6 mA/cm2. This may be attributed to that Nb is beneficial to passivate and stabilize Zr and Ti.

关 键 词：composite materials metallic glass coatings corrosion NIOBIUM 

分 类 号：TB333[一般工业技术—材料科学与工程]