Naslov
Application of longchain organic acids in corrosion protection of steel

Autori
Otmačić Ćurković, Helena ; Kristan, Ekatarina ; Hajdari, Zana ; Žuljević, Damir ; Novak, Dorotea

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Environmental resources, sustainable development and food production, Book of Abstracts / - , 2015, 24-24

Skup
4th Scientific symposium with international participation: Environmental resources, sustainable development and food production (OPORPH - 2015)

Mjesto i datum
Tuzla, Bosna i Hercegovina, 12.11.2015. - 13.11.2015

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Long-chain organic acids ; steel corrosion protection

Sažetak
Corrosion of metallic structures causes significant material loss and environment pollution. For that reason new ecologically acceptable corrosion protection techniques are developed, especially for ecosystems like marine, sensitive to pollution. One of such protection techniques is a modification of metallic structures by the self-assembled monolayers: thin, well ordered organic films of long-chain organic compounds. In this work the possibility of corrosion protection of steel by long chain phosphonic acids is examined. Thin films of octadecylphosphonic acid on steel surface are prepared by different methods: dip- coating, electrochemical method and spraying. Then, protective properties of such films are examined in artificial seawater by electrochemical techniques (3% NaCl): potentiodynamic polarization and electrochemical impedance spectroscopy. The surface of modified samples is also examined by contact angle measurements and Fourier Transform Infrared Spectroscopy in order to verify adsorption of phosphonic acid on metal and formation of an ordered organic layer. The results of electrochemical investigations show that by using an adequate preparation method and conditions (temperature, time, concentration) it is possible to form protective layer of phosphonic acid that significantly reduces steel corrosion rate in artificial seawater. Acknowledgments: The research leading to these results has received funding from Croatian Science Foundation under grant agreement 9.01/253.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA