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Polypyrrole coating...
Polypyrrole coatings on rheocast aluminum-silicon alloy : A correlation between properties and electrodeposition conditions
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- Eslami, Maryam (författare)
- Univ Trento, Dept Ind Engn, Trento, Italy
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- Speranza, Giorgio (författare)
- FBK, Ctr Mat & Microsyst, Trento, Italy
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- Deflorian, Flavio (författare)
- Univ Trento, Dept Ind Engn, Trento, Italy
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- Zanella, Caterina (författare)
- Jönköping University,JTH, Material och tillverkning
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(creator_code:org_t)
- 2019-11-11
- 2020
- Engelska.
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Ingår i: Surface and Interface Analysis. - : John Wiley & Sons. - 0142-2421 .- 1096-9918. ; 52:1-2, s. 4-15
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https://hj.diva-port... (primary) (Raw object)
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http://hj.diva-porta...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The effect of the electrolyte composition and the deposition potential range on the physical properties and possible corrosion protection effect of polypyrrole coatings on rheocast aluminum–2.5 % silicon alloy is investigated. Solutions with different concentrations of sodium nitrate and an electron transfer mediator reagent were used for the electrodeposition. Polypyrrole coating is able to hinder the entrance of electrolyte. Upon the penetration of chloride ions, the coating can induce passivation of the alloy's surface by its reduction. The thickness of the coating and its ion-barrier properties, controlled by the electrodeposition conditions, are shown as the important factors influencing the protection efficiency. However, localized drastic galvanic coupling at the polypyrrole/aluminum interface forms blisters, causes failure, and limits the possible protection.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Korrosionsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Corrosion Engineering (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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