文献类型：期刊文章

作　　者：秦玉娇[1] 吴玉萍[1] 张建峰[1] 郭文敏[1] 洪晟[1] 陈丽艳[1]

机构地区：[1]河海大学力学与材料学院金属材料与防护研究所,南京210098

出　　处：《Transactions of Nonferrous Metals Society of China》

年　　份：2015

卷　　号：25

期　　号：4

起止页码：1144-1150

语　　种：中文

收录情况：AJ、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2015_2016、EBSCO、EI、IC、INSPEC、JST、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：A FeCrSiBMn amorphous/nanocrystalline coating with 700 μm in thickness and 0.65% in porosity, was prepared by high velocity oxygen fuel(HVOF) spraying process. The long-term corrosion behavior of the FeCrSiBMn coating was evaluated by potentiodynamic polarization and electrochemical impedance spectroscopy(EIS) tests in a 3.5% NaCl solution with a hard chromium coating as a reference. The FeCrSiBMn coating exhibited higher corrosion potential and lower corrosion current density than the hard chromium coating. The pore resistance(Rp) and charge transfer resistance(Rct) of FeCrSiBMn coating were higher than those of the hard chromium coating. In addition, after immersion in the Na Cl solution for 28 d, only small pores in the FeCrSiBMn coating were observed. All the results indicated that the FeCrSiBMn coating held superior corrosion resistance to the hard chromium coating. This could be attributed to the dense structure, low porosity and amorphous/nanocrystalline phases of the FeCrSiBMn coating.

关 键 词：HVOF spraying  COATING Fe-based amorphous/nanocrystalline  corrosion resistance  

分 类 号：TG174.4]