Chromate-free corrosion resistant conversion coatings for aluminum alloys

R. G. Buchheit; C. A. Drewein; M. A. Martinez; G. E. Stoner

Chromate-free corrosion resistant conversion coatings for aluminum alloys

R. G. Buchheit, C. A. Drewein, M. A. Martinez, G. E. Stoner

Research output: Contribution to conference › Paper › peer-review

4 Scopus citations

Abstract

Inorganic polycrystalline hydrotalcite, Li₂[Al₂(OH)₆]₂·CO₃·3H₂O, coatings can be formed on aluminum and aluminum alloys by exposure to alkaline lithium carbonate solutions. This process is conducted using methods similar to traditional chromate conversion coating procedures, but does not use or produce toxic chemicals. The coating provides anodic protection and delays the onset of pitting during anodic polarization. Cathodic reactions are also inhibited which may also contribute to corrosion protection. Recent studies have shown that corrosion resistance can be increased by sealing hydrotalcite coated surfaces to transition metal salt solutions including Ce(NO₃)₃, KMnO₄ and Li₂MoO₄. Results from these studies are also reported.

Original language	English
Pages	173-182
Number of pages	10
State	Published - 1995
Event	Proceedings of the 1995 124th TMS Annual Meeting - Las Vegas, NV, USA Duration: Feb 13 1995 → Feb 16 1995

Conference

Conference	Proceedings of the 1995 124th TMS Annual Meeting
City	Las Vegas, NV, USA
Period	2/13/95 → 2/16/95

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Cite this

@conference{14972f2d5ad4480b98e789a7b6049ce0,

title = "Chromate-free corrosion resistant conversion coatings for aluminum alloys",

abstract = "Inorganic polycrystalline hydrotalcite, Li2[Al2(OH)6]2·CO3·3H2O, coatings can be formed on aluminum and aluminum alloys by exposure to alkaline lithium carbonate solutions. This process is conducted using methods similar to traditional chromate conversion coating procedures, but does not use or produce toxic chemicals. The coating provides anodic protection and delays the onset of pitting during anodic polarization. Cathodic reactions are also inhibited which may also contribute to corrosion protection. Recent studies have shown that corrosion resistance can be increased by sealing hydrotalcite coated surfaces to transition metal salt solutions including Ce(NO3)3, KMnO4 and Li2MoO4. Results from these studies are also reported.",

author = "Buchheit, {R. G.} and Drewein, {C. A.} and Martinez, {M. A.} and Stoner, {G. E.}",

year = "1995",

language = "English",

pages = "173--182",

note = "Proceedings of the 1995 124th TMS Annual Meeting ; Conference date: 13-02-1995 Through 16-02-1995",

}

TY - CONF

T1 - Chromate-free corrosion resistant conversion coatings for aluminum alloys

AU - Buchheit, R. G.

AU - Drewein, C. A.

AU - Martinez, M. A.

AU - Stoner, G. E.

PY - 1995

Y1 - 1995

N2 - Inorganic polycrystalline hydrotalcite, Li2[Al2(OH)6]2·CO3·3H2O, coatings can be formed on aluminum and aluminum alloys by exposure to alkaline lithium carbonate solutions. This process is conducted using methods similar to traditional chromate conversion coating procedures, but does not use or produce toxic chemicals. The coating provides anodic protection and delays the onset of pitting during anodic polarization. Cathodic reactions are also inhibited which may also contribute to corrosion protection. Recent studies have shown that corrosion resistance can be increased by sealing hydrotalcite coated surfaces to transition metal salt solutions including Ce(NO3)3, KMnO4 and Li2MoO4. Results from these studies are also reported.

AB - Inorganic polycrystalline hydrotalcite, Li2[Al2(OH)6]2·CO3·3H2O, coatings can be formed on aluminum and aluminum alloys by exposure to alkaline lithium carbonate solutions. This process is conducted using methods similar to traditional chromate conversion coating procedures, but does not use or produce toxic chemicals. The coating provides anodic protection and delays the onset of pitting during anodic polarization. Cathodic reactions are also inhibited which may also contribute to corrosion protection. Recent studies have shown that corrosion resistance can be increased by sealing hydrotalcite coated surfaces to transition metal salt solutions including Ce(NO3)3, KMnO4 and Li2MoO4. Results from these studies are also reported.

UR - http://www.scopus.com/inward/record.url?scp=0029453921&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029453921&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:0029453921

SP - 173

EP - 182

T2 - Proceedings of the 1995 124th TMS Annual Meeting

Y2 - 13 February 1995 through 16 February 1995

ER -

Chromate-free corrosion resistant conversion coatings for aluminum alloys

Abstract

Conference

ASJC Scopus subject areas

UN SDGs

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