A photoelectrochemical investigation of conversion coatings on Mg substrates

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43 Citazioni (Scopus)

Abstract

The structure, morphology and composition of conversion coatings grown in stannate bath on pure Mg were studied using potential–time, polarization curves, X-ray diffraction, scanning electron microscopy and photocurrent spectroscopy. The coating is manly constituted by crystalline magnesium–tin hydroxide, whose morphology and distribution depends on the conversion bath composition and temperature. The photoelectrochemical investigation allowed to estimate the band gap value of MgSn(OH)6 and flat band potential. A sketch of the metal/passive film/electrolyte junction formed during conversion on the metal substrate is reported to account for the overall photoelectrochemical behaviour.
Lingua originaleEnglish
pagine (da-a)2883-2900
Numero di pagine18
RivistaCorrosion Science
Volume47
Stato di pubblicazionePublished - 2005

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Metals
Coatings
Tin
Substrates
Chemical analysis
Photocurrents
Magnesium
Electrolytes
Energy gap
Spectroscopy
Polarization
Crystalline materials
X ray diffraction
Scanning electron microscopy
Temperature
hydroxide ion

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Metals and Alloys

Cita questo

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title = "A photoelectrochemical investigation of conversion coatings on Mg substrates",
abstract = "The structure, morphology and composition of conversion coatings grown in stannate bath on pure Mg were studied using potential–time, polarization curves, X-ray diffraction, scanning electron microscopy and photocurrent spectroscopy. The coating is manly constituted by crystalline magnesium–tin hydroxide, whose morphology and distribution depends on the conversion bath composition and temperature. The photoelectrochemical investigation allowed to estimate the band gap value of MgSn(OH)6 and flat band potential. A sketch of the metal/passive film/electrolyte junction formed during conversion on the metal substrate is reported to account for the overall photoelectrochemical behaviour.",
keywords = "conversion coating; Mg; mixed hydroxide; photocurrent spectroscopy",
author = "{Di Quarto}, Francesco and Rosanna Masi and Monica Santamaria and Anicai",
year = "2005",
language = "English",
volume = "47",
pages = "2883--2900",
journal = "Corrosion Science",
issn = "0010-938X",
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T1 - A photoelectrochemical investigation of conversion coatings on Mg substrates

AU - Di Quarto, Francesco

AU - Masi, Rosanna

AU - Santamaria, Monica

AU - Anicai, null

PY - 2005

Y1 - 2005

N2 - The structure, morphology and composition of conversion coatings grown in stannate bath on pure Mg were studied using potential–time, polarization curves, X-ray diffraction, scanning electron microscopy and photocurrent spectroscopy. The coating is manly constituted by crystalline magnesium–tin hydroxide, whose morphology and distribution depends on the conversion bath composition and temperature. The photoelectrochemical investigation allowed to estimate the band gap value of MgSn(OH)6 and flat band potential. A sketch of the metal/passive film/electrolyte junction formed during conversion on the metal substrate is reported to account for the overall photoelectrochemical behaviour.

AB - The structure, morphology and composition of conversion coatings grown in stannate bath on pure Mg were studied using potential–time, polarization curves, X-ray diffraction, scanning electron microscopy and photocurrent spectroscopy. The coating is manly constituted by crystalline magnesium–tin hydroxide, whose morphology and distribution depends on the conversion bath composition and temperature. The photoelectrochemical investigation allowed to estimate the band gap value of MgSn(OH)6 and flat band potential. A sketch of the metal/passive film/electrolyte junction formed during conversion on the metal substrate is reported to account for the overall photoelectrochemical behaviour.

KW - conversion coating; Mg; mixed hydroxide; photocurrent spectroscopy

UR - http://hdl.handle.net/10447/18694

M3 - Article

VL - 47

SP - 2883

EP - 2900

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

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