Title of article
Influence of spraying parameters on the electrochemical behaviour of HVOF thermally sprayed stainless steel coatings in 3.4% NaCl
Author/Authors
Guilemany، نويسنده , , J.M. and Fernلndez، نويسنده , , J. and Espallargas، نويسنده , , N. and Suegama، نويسنده , , P.H. and Benedetti، نويسنده , , A.V.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
9
From page
3064
To page
3072
Abstract
Stainless steel coatings obtained by High Velocity Oxygen Fuel (HVOF) were characterized using optical (OM) and scanning electron microscopy (SEM), electron probe micro-analysis, X-ray diffraction (XRD), open-circuit potential (EOC) measurements, electrochemical impedance spectroscopy (EIS) and polarisation tests. Differences among coated steels were mainly related with the gun-substrate distance parameter (310 mm for samples A and B and 260 mm for C and D). The open-circuit potential values measured for all the samples after 18 h of immersion in aerated and unstirred 3.4% NaCl solution were: − 0.334, − 0.360, − 0.379 and − 0.412 V vs. Ag/AgCl,KClsat. for samples A to D, respectively. For EIS measurements, Nyquist plots showed higher capacitive semi-circle for samples sprayed at longer distance, indicating higher corrosion resistance in NaCl solution.
Keywords
Stainless steel , electrochemical behaviour , Corrosion , Thermal spraying , HVOF
Journal title
Surface and Coatings Technology
Serial Year
2006
Journal title
Surface and Coatings Technology
Record number
1810816
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