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Corrosion protection by novel conversion coatings on structural AI 6061

Chromate conversion coatings have witnessed limited acceptability in recent times. The coatings contain Cr (VI) species that have been classified as environmental hazards and injurious to human. Thus, the use of environment-friendly and non-carcinigenic novel inorganic- inorganic hybrid conversion c...

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Published: 2022
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LEADER 00000njm a2000000a 4500
001 oai:repository.ui.edu.ng:123456789/9379
042 |a dc 
720 |a Oki, M.  |e author 
720 |a Adediran, A. A.  |e author 
720 |a Ikechukwu, A.  |e author 
720 |a Onokohwomo, C. O.  |e author 
720 |a Bosa, C.  |e author 
720 |a Akintola, S. A.  |e author 
720 |a Adesina, O. S.  |e author 
260 |c 2022 
520 |a Chromate conversion coatings have witnessed limited acceptability in recent times. The coatings contain Cr (VI) species that have been classified as environmental hazards and injurious to human. Thus, the use of environment-friendly and non-carcinigenic novel inorganic- inorganic hybrid conversion coatings are being explored. Vanadate (VCC), hybrid Vanadate/Molydate (HCC) conversion coatings on A16061 have been classified in terms of corrosion and adhesion performance with reference to the untreated alloy. Natural exposure tests in the atmosphere and stanant near-neutral 3.5% sodium chloride solution, as well as patentio-dynamic polarization measurements showed that the corrosion rate for HCC is lower for Vanadate, which in turn outclassed the ‘bare’ alloy. However, clusters of passive incipient pits were revealed on the former after 120 h of exposure in stagnant chloride solution. Both conversion coatings outperformed the untreated aluminiun alloy after atmospheric corrosion and adhesion tests. 
024 8 |a 2672-9156 
024 8 |a 2673-0421 
024 8 |a ui_art_oki_corrosion_2023 
024 8 |a Applied Science and Engineering Progress 16(1), pp. 1-8 
024 8 |a http://ir.library.ui.edu.ng/handle/123456789/9379 
653 |a Conversion coatings 
653 |a Molybdate 
653 |a Vanadate 
653 |a Chromate 
653 |a Aluminium alloy 
245 0 0 |a Corrosion protection by novel conversion coatings on structural AI 6061