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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hariharan, Seenivasan
University of Amsterdam
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2018Pt-Ni Subsurface Alloy Catalystscitations
- 2014Characterization and corrosion behavior of Co and Co-P coatings electrodeposited from chloride bathcitations
- 2013Studies on surface structure, morphology and composition of Co-W coatings electrodeposited with direct and pulse current using gluconate bathcitations
- 2013Characterization and microhardness of Co-W coatings electrodeposited at different pH using gluconate bathcitations
- 2013Characterization and hardness of Co-P coatings obtained from direct current electrodeposition using gluconate bathcitations
- 2012Characterization of amorphous Co-P alloy coatings electrodeposited with pulse current using gluconate bathcitations
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article
Characterization and hardness of Co-P coatings obtained from direct current electrodeposition using gluconate bath
Abstract
<p>Direct current electrodeposition of Co-P alloy coatings were carried out using gluconate bath and they were characterized by employing techniques like XRD, FESEM, DSC and XPS. Broad XRD lines demonstrate the amorphous nature of Co-P coatings. Spherical and rough nodules are observed on the surface of coatings as seen from FESEM images. Three exothermic peaks around 290, 342 and 390°C in DSC profiles of Co-P coatings could be attributed to the crystallization and formation of Co<sub>2</sub>P phase in the coatings. As-deposited coatings consist of Co metal and oxidized Co species as revealed by XPS studies. Bulk alloy P (P<sup>δ-</sup>) as well as oxidized P (P <sup>5+</sup>) are present on the surface of coatings. Concentrations of Co metal and P<sup>δ-</sup> increase with successive sputtering of the coating. Observed microhardness value is 1005 HK when Co-P coating obtained from 10 g L<sup>-1</sup> NaH<sub>2</sub>PO<sub>2</sub> is heated at 400°C that is comparable with hard chromium coatings.</p>