Czasopismo | OCHRONA PRZED KOROZJĄ | Rocznik 2016 - zeszyt 9

Evaluation of protective properties of silane coatings modified with rhodanine

10.15199/40.2016.9.4

Edyta Owczarek

nr katalogowy: 100714
10.15199/40.2016.9.4

The protective, anticorrosion properties of silane and polyrhodanine based bilayer coatings IBTES/pRh prepared on X20Cr13 stainless steel substrate are evaluated in this paper. Isobutyltriethoxysilane (IBTES) films were deposited by dip-coating method on steel substrates and stored in air (“aged"). Polyrhodanine (pRh) coatings were electrodeposited using the cyclic voltammetry technique. The protective properties of IBTES/pRh coatings were investigated in chloride ions solution. It was found that bilayer coatings IBTES/pRh exhibit more effective corrosion protection compared to single component pRh or IBTES coatings. Keywords: rhodanine, silane, bilayer coatings, protection of stainless steel W niniejszej pracy dokonano oceny właściwości ochronnych dwuwarstwowych powłok na bazie silanu i polirodaniny IBTES/pRh wytworzonych na powierzchni stali nierdzewnej X20Cr13. Filmy silanowe IBTES na podłożu stalowym osadzano metodą zanurzeniową, a następnie przechowywano w powietrzu ("starzono"). Powłoki z polirodaniny pRH osadzano stosując technikę woltamperometrii cyklicznej. Właściwości ochronne powłok IBTES/pRH badano w roztworze jonów chlorkowych. Stwierdzono, że powłoki dwuwarstwowe IBTES/pRH zapewniają skuteczniejszą ochronę przed korozją w porównaniu z jednowarstwowymi powłokami z polirodaniny pRh lub silanowymi IBTES. Słowa kluczowe: rodanina, silan, powłoki dwuwarstwowe, ochrona stali nierdzewnej 1. Introduction Corrosion processes of metals and its alloys are a worldwide problem which causes huge economic loss annually in both developed and developing countries. The most common method of corrosion inhibition is to apply protective coatings system providing a barrier between the metal surface and the corrosive environment such as paints, varnishes, pre-treatment layers, adhesives, etc. on metal substrates. In the past, chromium(VI) or phosphate containing conversion pre-treatments were applied. Due to highly environmental[...]

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