The Corrosion Resistance of Hard Anodised en AW 7075 T6 Alloy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F23%3A00558243" target="_blank" >RIV/60162694:G43__/23:00558243 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26620/21:PU143189
Result on the web
<a href="http://ecst.ecsdl.org/" target="_blank" >http://ecst.ecsdl.org/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1149/10501.0329ecst" target="_blank" >10.1149/10501.0329ecst</a>
Alternative languages
Result language
angličtina
Original language name
The Corrosion Resistance of Hard Anodised en AW 7075 T6 Alloy
Original language description
In this paper, commercially cold-rolled and artificial aged EN AW 7075 T6 alloy has been used. To ensure increased corrosion resistance, surface hardness, scratching resistance, and aesthetic features, this aluminium alloy was subsequently hard anodised and hot-water sealed (AC-A). The hard anodizing and sealing process increased surface hardness up to 304±13 HV 1 from an initial surface hardness of 194±3 HV 1. Also, the microhardness of the anodised layer and bulk material has been documented. Scanning electron microscopy (SEM) was used for microstructure and trapped precipitates investigation in the 42.9±1.4 thick formed anodised layer investigation. The T6 treated (AC) and hard anodised together with sealed (AC-A) EN AW 7075 alloy corrosion properties were evaluated using the anodic potentiodynamic polarisation tests (PPT) in a neutral 2.5% NaCl deaerated solution. The corrosion rate CR (mm/y) decreased approx. 39-times for the hard anodised and sealed EN AW 7075 alloy (AC-A), associated with the shift of the Ecorr (mV) to more positive values, degreased Icorr (μA) and increased Rp (Ohm) values compared to the artificial aged (AC) alloy. Additionally, the pitting was evaluated using laser confocal microscopy, and the pitting coefficient was also calculated.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20506 - Coating and films
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
ECS Transactions
ISBN
978-1-60768-539-5
ISSN
1938-6737
e-ISSN
1938-5862
Number of pages
9
Pages from-to
329-337
Publisher name
IOP Publishing Ltd
Place of publication
Brno
Event location
Brno, Czech Republic
Event date
Aug 22, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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