On the microstructural and electrochemical nature of hydrothermally treated Al-Zr and Al-Ti surfaces

Juan Tan; Marco Crosio; Nadja Vinkel; Peter Jensen; Shoshan Tamar Abrahami; Visweswara Chakravarthy Gudla; Rajan Ambat

doi:10.1016/j.corsci.2019.108244

On the microstructural and electrochemical nature of hydrothermally treated Al-Zr and Al-Ti surfaces

Juan Tan
, Marco Crosio
, Nadja Vinkel
, Peter Jensen
, Shoshan Tamar Abrahami
, Visweswara Chakravarthy Gudla
, Rajan Ambat

Afdeling for Kortlægning og Mineralske Råstoffer

Publikation: Bidrag til tidsskrift › Artikel › Forskning › peer review

2 Citationer (Scopus)

Resumé

Hydrothermal treatment of sputtered Al-Zr and Al-Ti coatings was performed in an autoclave. Electron microscopy of generated conversion layers revealed dual layered boehmite films. Needle morphology at top, and thin compact oxide at interface with metal substrate was observed. X-ray energy dispersive, and photoelectron spectroscopy revealed enrichment of Zr or Ti in compact oxide, and oxidation of Zr, Ti and Al. Potentiodynamic polarization showed decrease in passive current densities due to treatment. Treated Zr containing surfaces showed lower corrosion current density when compared to those containing Ti. The observed electrochemical properties are correlated with microstructure and composition of conversion layers.

Originalsprog	Engelsk
Artikelnummer	108244
Tidsskrift	Corrosion Science
Vol/bind	163
DOI	https://doi.org/10.1016/j.corsci.2019.108244
Status	Udgivet - feb. 2020

Programområde

Programområde 4: Mineralske råstoffer

Adgang til dokumentet

10.1016/j.corsci.2019.108244

Citationsformater

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title = "On the microstructural and electrochemical nature of hydrothermally treated Al-Zr and Al-Ti surfaces",

abstract = "Hydrothermal treatment of sputtered Al-Zr and Al-Ti coatings was performed in an autoclave. Electron microscopy of generated conversion layers revealed dual layered boehmite films. Needle morphology at top, and thin compact oxide at interface with metal substrate was observed. X-ray energy dispersive, and photoelectron spectroscopy revealed enrichment of Zr or Ti in compact oxide, and oxidation of Zr, Ti and Al. Potentiodynamic polarization showed decrease in passive current densities due to treatment. Treated Zr containing surfaces showed lower corrosion current density when compared to those containing Ti. The observed electrochemical properties are correlated with microstructure and composition of conversion layers.",

keywords = "A. Aluminium, A. Sputtered films, B. Polarization, B. TEM, C. Interfaces, C. Passive films",

author = "Juan Tan and Marco Crosio and Nadja Vinkel and Peter Jensen and Abrahami, \{Shoshan Tamar\} and Gudla, \{Visweswara Chakravarthy\} and Rajan Ambat",

note = "Funding Information: Authors VCG, PJ, and RA acknowledge the funding from Innovationsfonden, Denmark under the project High Performance Electrical Contacts (HiPEC). Author VCG further acknowledges the funding from European Research Council under the grant Correlative Tomography (CORREL-CT, grant number 695638). Author SA acknowledges funding from the Fonds Wetenschappelijk Onderzoek in Flanders (FWO, postdoctoral grant 12Z2418N). Funding Information: Authors VCG, PJ, and RA acknowledge the funding from Innovationsfonden, Denmark under the project High Performance Electrical Contacts (HiPEC). Author VCG further acknowledges the funding from European Research Council under the grant Correlative Tomography (CORREL-CT, grant number 695638 ). Author SA acknowledges funding from the Fonds Wetenschappelijk Onderzoek in Flanders (FWO, postdoctoral grant 12Z2418N ). Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2020",

month = feb,

doi = "10.1016/j.corsci.2019.108244",

language = "English",

volume = "163",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier",

}

TY - JOUR

T1 - On the microstructural and electrochemical nature of hydrothermally treated Al-Zr and Al-Ti surfaces

AU - Tan, Juan

AU - Crosio, Marco

AU - Vinkel, Nadja

AU - Jensen, Peter

AU - Abrahami, Shoshan Tamar

AU - Gudla, Visweswara Chakravarthy

AU - Ambat, Rajan

N1 - Funding Information: Authors VCG, PJ, and RA acknowledge the funding from Innovationsfonden, Denmark under the project High Performance Electrical Contacts (HiPEC). Author VCG further acknowledges the funding from European Research Council under the grant Correlative Tomography (CORREL-CT, grant number 695638). Author SA acknowledges funding from the Fonds Wetenschappelijk Onderzoek in Flanders (FWO, postdoctoral grant 12Z2418N). Funding Information: Authors VCG, PJ, and RA acknowledge the funding from Innovationsfonden, Denmark under the project High Performance Electrical Contacts (HiPEC). Author VCG further acknowledges the funding from European Research Council under the grant Correlative Tomography (CORREL-CT, grant number 695638 ). Author SA acknowledges funding from the Fonds Wetenschappelijk Onderzoek in Flanders (FWO, postdoctoral grant 12Z2418N ). Publisher Copyright: © 2019 Elsevier Ltd

PY - 2020/2

Y1 - 2020/2

N2 - Hydrothermal treatment of sputtered Al-Zr and Al-Ti coatings was performed in an autoclave. Electron microscopy of generated conversion layers revealed dual layered boehmite films. Needle morphology at top, and thin compact oxide at interface with metal substrate was observed. X-ray energy dispersive, and photoelectron spectroscopy revealed enrichment of Zr or Ti in compact oxide, and oxidation of Zr, Ti and Al. Potentiodynamic polarization showed decrease in passive current densities due to treatment. Treated Zr containing surfaces showed lower corrosion current density when compared to those containing Ti. The observed electrochemical properties are correlated with microstructure and composition of conversion layers.

AB - Hydrothermal treatment of sputtered Al-Zr and Al-Ti coatings was performed in an autoclave. Electron microscopy of generated conversion layers revealed dual layered boehmite films. Needle morphology at top, and thin compact oxide at interface with metal substrate was observed. X-ray energy dispersive, and photoelectron spectroscopy revealed enrichment of Zr or Ti in compact oxide, and oxidation of Zr, Ti and Al. Potentiodynamic polarization showed decrease in passive current densities due to treatment. Treated Zr containing surfaces showed lower corrosion current density when compared to those containing Ti. The observed electrochemical properties are correlated with microstructure and composition of conversion layers.

KW - A. Aluminium

KW - A. Sputtered films

KW - B. Polarization

KW - B. TEM

KW - C. Interfaces

KW - C. Passive films

UR - https://www.scopus.com/pages/publications/85072760446

U2 - 10.1016/j.corsci.2019.108244

DO - 10.1016/j.corsci.2019.108244

M3 - Article

AN - SCOPUS:85072760446

SN - 0010-938X

VL - 163

JO - Corrosion Science

JF - Corrosion Science

M1 - 108244

ER -

On the microstructural and electrochemical nature of hydrothermally treated Al-Zr and Al-Ti surfaces

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