MAIN ACTIVITIES AND RESULTS – 2015

 

WP2 – Development and characterization of corrosion resistant coatings (Cr, Ni and Co alloys with Mo and/or V, metal-CNT composites)

 

Task 2.2. Co-CNT electrodeposition (FCUP)

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Photographic image of Co-CNT coating on Cu substrate using  1 M CoCl2.6H2O + 0.2 g/l CNTs in ChCl-urea eutectic (9.4 mA/cm2, 30 min., 100oC, mild stirring)

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2D and 3D AFM images of a Co-CNT deposit (5 mA/cm2, 94oC, 30 min., mild stirring)

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Raman spectra for: (a) MWCNTs sample (Aldrich) and (b) Co-CNT deposit (5 mA/cm2, 94oC, 30 min., mild stirring)

 

 Task 2.3. Long term ex-situ corrosion investigations in various simulated aggressive environments (UPB-CSSNT)

 

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Electrochemical impedance spectra of Ni-Mo (a) and Co-Mo (b) alloys coatings recorded at open circuit potential (OCP) in 0.5 M NaCl solution for different immersion periods

 

Fitting results of impedance spectra for Ni-Mo and Co-Mo alloys coatings  after exposure to 0.5M NaCl solution for different times using the proposed equivalent circuit

Conditioning period hours Ni-Mo alloy Co-Mo alloy
Rct / W Rct / W RF / W
0 10100 733 366
24 60022 701 12119
48 25750 1303 10296
240 20745 77 137400

 

 

WP3 – Development and characterization of corrosion resistant coatings (Cr, Ni and Co alloys with Mo and/or V, metal-CNT composites)

 

Task 3.2.- Optimization of working parameters and structural characterization of  the obtained anodic oxide nanostructures (UPB-CSSNT, FCUP, DUNE)

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2D (a) AFM images, (b) surface profile and (c) SEM micrograph  of top view of anodic alumina membrane using ChCitOx  system, 6 mA/cm2, 60oC, 80 V, 75 min.

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WP4 – Novel processes development validation and prototype systems (UPB-CSSNT, DUNE< FCUP)

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Small scale laboratory prototype for Ni-Mo alloy coatings electrodeposition involving choline chloride based ionic liquids

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Photo images of Ni-Mo alloy coatings onto various metallic parts using the proposed technology

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Photo images of Co-Mo alloy coatings onto various metallic parts using the proposed technology