Non-electrolytic formation of Al-oxide surface layers by reversion of hydrotalcite

R. G. Buchheit; M. A. Martinez; L. P. Montes; N. P. Celia; S. R. Taylor; G. E. Stoner

Non-electrolytic formation of Al-oxide surface layers by reversion of hydrotalcite

R. G. Buchheit, M. A. Martinez, L. P. Montes, N. P. Celia, S. R. Taylor, G. E. Stoner

Research output: Contribution to journal › Conference article › peer-review

Abstract

Polycrystalline hydrated aluminum oxide coatings with high corrosion resistance have been produced on AÎ alloys using non-toxic, non-electrolytic methods. These coatings are formed by a two stage process consisting of immersion in an alkaline Li-salt solution to form a hydrotalcite coating followed by immersion in boiling distilled water. Immersion in boiling water transforms the hydrotalcite to hydrated aluminum oxide (bayerite). This process has been termed "reversion". Reversion coatings can be formed in 30 minutes or less and exhibit corrosion resistances near that of anodized coatings. Reversion coating morphology, structure and composition are presented. The corrosion resistance of reversion coatings is compared to the corrosion resistance of coatings produced by Chromate conversion and electrolytic anodization.

Original language	English
Journal	NACE - International Corrosion Conference Series
Volume	1998-March
State	Published - 1998
Event	Corrosion 1998 - San Diego, United States Duration: Mar 22 1998 → Mar 27 1998

Bibliographical note

Publisher Copyright:
© 1998 by NACE International.

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

Cite this

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title = "Non-electrolytic formation of Al-oxide surface layers by reversion of hydrotalcite",

abstract = "Polycrystalline hydrated aluminum oxide coatings with high corrosion resistance have been produced on A{\^I} alloys using non-toxic, non-electrolytic methods. These coatings are formed by a two stage process consisting of immersion in an alkaline Li-salt solution to form a hydrotalcite coating followed by immersion in boiling distilled water. Immersion in boiling water transforms the hydrotalcite to hydrated aluminum oxide (bayerite). This process has been termed {"}reversion{"}. Reversion coatings can be formed in 30 minutes or less and exhibit corrosion resistances near that of anodized coatings. Reversion coating morphology, structure and composition are presented. The corrosion resistance of reversion coatings is compared to the corrosion resistance of coatings produced by Chromate conversion and electrolytic anodization.",

author = "Buchheit, {R. G.} and Martinez, {M. A.} and Montes, {L. P.} and Celia, {N. P.} and Taylor, {S. R.} and Stoner, {G. E.}",

note = "Publisher Copyright: {\textcopyright} 1998 by NACE International.; Corrosion 1998 ; Conference date: 22-03-1998 Through 27-03-1998",

year = "1998",

language = "English",

volume = "1998-March",

}

TY - JOUR

T1 - Non-electrolytic formation of Al-oxide surface layers by reversion of hydrotalcite

AU - Buchheit, R. G.

AU - Martinez, M. A.

AU - Montes, L. P.

AU - Celia, N. P.

AU - Taylor, S. R.

AU - Stoner, G. E.

PY - 1998

Y1 - 1998

N2 - Polycrystalline hydrated aluminum oxide coatings with high corrosion resistance have been produced on AÎ alloys using non-toxic, non-electrolytic methods. These coatings are formed by a two stage process consisting of immersion in an alkaline Li-salt solution to form a hydrotalcite coating followed by immersion in boiling distilled water. Immersion in boiling water transforms the hydrotalcite to hydrated aluminum oxide (bayerite). This process has been termed "reversion". Reversion coatings can be formed in 30 minutes or less and exhibit corrosion resistances near that of anodized coatings. Reversion coating morphology, structure and composition are presented. The corrosion resistance of reversion coatings is compared to the corrosion resistance of coatings produced by Chromate conversion and electrolytic anodization.

AB - Polycrystalline hydrated aluminum oxide coatings with high corrosion resistance have been produced on AÎ alloys using non-toxic, non-electrolytic methods. These coatings are formed by a two stage process consisting of immersion in an alkaline Li-salt solution to form a hydrotalcite coating followed by immersion in boiling distilled water. Immersion in boiling water transforms the hydrotalcite to hydrated aluminum oxide (bayerite). This process has been termed "reversion". Reversion coatings can be formed in 30 minutes or less and exhibit corrosion resistances near that of anodized coatings. Reversion coating morphology, structure and composition are presented. The corrosion resistance of reversion coatings is compared to the corrosion resistance of coatings produced by Chromate conversion and electrolytic anodization.

UR - http://www.scopus.com/inward/record.url?scp=85046814136&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85046814136&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85046814136

SN - 0361-4409

VL - 1998-March

JO - NACE - International Corrosion Conference Series

JF - NACE - International Corrosion Conference Series

T2 - Corrosion 1998

Y2 - 22 March 1998 through 27 March 1998

ER -

Non-electrolytic formation of Al-oxide surface layers by reversion of hydrotalcite

Abstract

Bibliographical note

ASJC Scopus subject areas

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