Exploring the corrosion inhibition of magnesium by coatings
| Autor: | T. Selvaraju, V. Kavimani, T. Saravanakumar, K. Soorya Prakash |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Tafel equation
Materials science Magnesium General Chemical Engineering Organic Chemistry Nanoparticle chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Corrosion Dielectric spectroscopy Surface coating Chemical engineering chemistry Materials Chemistry Nanorod 0210 nano-technology Polarization (electrochemistry) |
| Zdroj: | Progress in Organic Coatings. 129:32-42 |
| ISSN: | 0300-9440 |
| DOI: | 10.1016/j.porgcoat.2019.01.006 |
| Popis: | The objective of the work is to identify the anticorrosive property synthesized Nano ZnO rods and CeO2 particles. Both ZnO and CeO2 have good anticorrosion behavior; this materials are tested with and without composition to identify the corrosion inhibition behavior. The result reveals the high protection rate, which was accomplished by the composition. In this research, a detailed investigation of the corrosion inhibition performance of magnesium (Mg) substrate coated nanoparticles like cerium dioxide (CeO2), zinc oxide nanorods (ZnO) and CeO2/ZnO composites were studied. Synthesized nanoparticles were characterized by various physio-chemical techniques. Surface morphology of the developed set of specimens was scrutinized through SEM and EDAX, which established a clean surface coating with minimal defects attainment through doctor’s blade method. Electrochemical corrosion behavior of Mg substrates coated with definite proportions of CeO2, ZnO and CeO2/ZnO composites were conceded in 3.5 wt. % NaCl using Tafel polarization and electrochemical impedance spectroscopy. Thus the developed CeO2/ZnO composite coating exhibits icorr of 0.905 (A cm−2) and corrosion rate was 0.81 × 10−5 mpy better corrosion resistance compared to bare Mg or CeO2 or ZnO coatings. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect