Details

Autor(en) / Beteiligte

• Wang, Y.
• Li, K.Y.
• Scenini, F.
• Jiao, J.
• Qu, S.J.
• Luo, Q.
• Shen, J.

Titel

The effect of residual stress on the electrochemical corrosion behavior of Fe-based amorphous coatings in chloride-containing solutions

Ist Teil von

• Surface & coatings technology, 2016-09, Vol.302, p.27-38

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The electrochemical corrosion and passive behavior of activated combustion high-velocity air fuel FeCrMoMnWBCSi amorphous metallic coatings (AMCs) under different geometries that produced a variable tensile residual stresses were investigated in chloride-containing solutions by using electrochemical measurements and X-ray photoelectron spectroscopy. The tensile residual stresses of AMCs were determined by the mechanical method of sharp indentation testing. A systematic detrimental effect of tensile residual stress on passive current density and localized corrosion was found. The detrimental effect of residual stress was aggravated at higher temperatures and acidity. The implication of high donor density on the passive film stability, derived from Mott–Schottky analysis, is also discussed. •The amorphous metallic coatings (AMCs) with convex arc were prepared by AC-HVAF.•The tensile residual stresses of AMCs were determined by sharp indentation testing.•The high tensile residual stress increased the corrosion susceptibility of AMCs.•The tensile residual stress decreased the uniform corrosion and pitting resistance.