Protective films of stearic and octadecylphosphonic acid formed by spray coating
Spray coating formation of stearic and octadecylphosphonic acid films for corrosion protection of cupronickel alloy was studied in this work as a more practical alternative to widely studied dip-coating method. Protective properties of organic films formed under various experimental conditions were...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
International Association of Physical Chemists (IAPC)
2020-03-01
|
| Series: | Journal of Electrochemical Science and Engineering |
| Subjects: | |
| Online Access: | http://pub.iapchem.org/ojs/index.php/JESE/article/view/739 |
| _version_ | 1818370339450650624 |
|---|---|
| author | Ekatarina Kristan Mioč Helena Otmačić Ćurković |
| author_facet | Ekatarina Kristan Mioč Helena Otmačić Ćurković |
| author_sort | Ekatarina Kristan Mioč |
| collection | DOAJ |
| description | Spray coating formation of stearic and octadecylphosphonic acid films for corrosion protection of cupronickel alloy was studied in this work as a more practical alternative to widely studied dip-coating method. Protective properties of organic films formed under various experimental conditions were examined by electrochemical studies in 3% NaCl solution as a corrosive medium. Polarization resistance measurements as well as electrochemical impedance spectroscopy were employed to follow in time the corrosion behaviour of cupronickel alloy modified by studied organic acids. It was found that among examined experimental parameters, time elapsed between two sprays and number of sprays have the strongest influence on the film stability and its protective properties. This study confirmed that it is possible to form by spray coating the films of stearic and octadecylphosphonic acid with protective properties that resemble to those of the films prepared by dip-coating method. Differences in corrosion behaviour of samples protected with stearic and octadecylphosphonic acid were attributed to difference in the bond strength between substrate and each organic acid. Studied samples were also examined by the scanning electron microscopy. Fourier transformed infrared spectroscopy studies showed that crystalline structure dominates in studied films, while contact angle measurements confirmed that modified cupronickel alloy surface exhibits hydrophobic properties. |
| first_indexed | 2024-12-13T23:38:10Z |
| format | Article |
| id | doaj.art-89610eea0d7f4a588248a77b9c908d54 |
| institution | Directory Open Access Journal |
| issn | 1847-9286 |
| language | English |
| last_indexed | 2024-12-13T23:38:10Z |
| publishDate | 2020-03-01 |
| publisher | International Association of Physical Chemists (IAPC) |
| record_format | Article |
| series | Journal of Electrochemical Science and Engineering |
| spelling | doaj.art-89610eea0d7f4a588248a77b9c908d542022-12-21T23:27:15ZengInternational Association of Physical Chemists (IAPC)Journal of Electrochemical Science and Engineering1847-92862020-03-0110210.5599/jese.739413Protective films of stearic and octadecylphosphonic acid formed by spray coatingEkatarina Kristan Mioč0Helena Otmačić Ćurković1Faculty of Chemical Engineering and Technology, University of ZagrebFaculty of Chemical Engineering and Technology, University of ZagrebSpray coating formation of stearic and octadecylphosphonic acid films for corrosion protection of cupronickel alloy was studied in this work as a more practical alternative to widely studied dip-coating method. Protective properties of organic films formed under various experimental conditions were examined by electrochemical studies in 3% NaCl solution as a corrosive medium. Polarization resistance measurements as well as electrochemical impedance spectroscopy were employed to follow in time the corrosion behaviour of cupronickel alloy modified by studied organic acids. It was found that among examined experimental parameters, time elapsed between two sprays and number of sprays have the strongest influence on the film stability and its protective properties. This study confirmed that it is possible to form by spray coating the films of stearic and octadecylphosphonic acid with protective properties that resemble to those of the films prepared by dip-coating method. Differences in corrosion behaviour of samples protected with stearic and octadecylphosphonic acid were attributed to difference in the bond strength between substrate and each organic acid. Studied samples were also examined by the scanning electron microscopy. Fourier transformed infrared spectroscopy studies showed that crystalline structure dominates in studied films, while contact angle measurements confirmed that modified cupronickel alloy surface exhibits hydrophobic properties.http://pub.iapchem.org/ojs/index.php/JESE/article/view/739Corrosionelectrochemical impedance spectroscopypolarization measurementsFTIRcupronickel alloy |
| spellingShingle | Ekatarina Kristan Mioč Helena Otmačić Ćurković Protective films of stearic and octadecylphosphonic acid formed by spray coating Journal of Electrochemical Science and Engineering Corrosion electrochemical impedance spectroscopy polarization measurements FTIR cupronickel alloy |
| title | Protective films of stearic and octadecylphosphonic acid formed by spray coating |
| title_full | Protective films of stearic and octadecylphosphonic acid formed by spray coating |
| title_fullStr | Protective films of stearic and octadecylphosphonic acid formed by spray coating |
| title_full_unstemmed | Protective films of stearic and octadecylphosphonic acid formed by spray coating |
| title_short | Protective films of stearic and octadecylphosphonic acid formed by spray coating |
| title_sort | protective films of stearic and octadecylphosphonic acid formed by spray coating |
| topic | Corrosion electrochemical impedance spectroscopy polarization measurements FTIR cupronickel alloy |
| url | http://pub.iapchem.org/ojs/index.php/JESE/article/view/739 |
| work_keys_str_mv | AT ekatarinakristanmioc protectivefilmsofstearicandoctadecylphosphonicacidformedbyspraycoating AT helenaotmaciccurkovic protectivefilmsofstearicandoctadecylphosphonicacidformedbyspraycoating |