Multi-functional hybrid coatings containing silica nanoparticles and anti-corrosive acrylate monomer for scratch and corrosion resistance

2010 ◽  
Vol 22 (2) ◽  
pp. 025601 ◽  
Author(s):  
Ji Yeon Seo ◽  
Mijeong Han
Keyword(s):  
Corrosion Resistance ◽  
Silica Nanoparticles ◽  
Hybrid Coatings ◽  
Acrylate Monomer

Carbon nanotube-reinforced siloxane-PMMA hybrid coatings with high corrosion resistance

2013 ◽  
Vol 76 (4) ◽  
pp. 601-608 ◽  
Author(s):  
P. Hammer ◽  
F.C. dos Santos ◽  
B.M. Cerrutti ◽  
S.H. Pulcinelli ◽  
C.V. Santilli
Keyword(s):  
Corrosion Resistance ◽  
Carbon Nanotube ◽  
Hybrid Coatings ◽  
High Corrosion Resistance ◽  
High Corrosion

Comparison of Structure and Properties of the PVD, Hybrid (Galvanic + PVD), and Galvanic Coatings Deposited onto the Brass Substrate

2008 ◽  
Vol 591-593 ◽  
pp. 860-864 ◽  
Author(s):  
Leszek Adam Dobrzański ◽  
Krzysztof Lukaszkowicz
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Hard Coatings ◽  
Hybrid Coatings ◽  
Metallographic Analysis ◽  
Pvd Coatings ◽  
Nitride Coatings ◽  
Naoh Solution ◽  
Erosion Test ◽  
Made In

The properties of thin hard coatings and consequently their functionality are influenced by microstructural characteristics such as mechanical properties. A variety of interlayers has been used in hybrid coatings for various purposes. The paper presents investigation results of the structure, erosion and corrosion resistance, and mechanical properties of the galvanic Ni/Cr, hybrid Ni/Cr + Zr/ZrN (galvanic + PVD) and monolithic nitride coatings deposited by PVD technique (dc magnetron sputtering) onto brass (CuZn40Pb2) substrates. The ceramic PVD coatings or layers are the Cr-, Ti-, TiAl-, Zr-nitrides. The investigation covered the metallographic analysis on the scanning electron microscope, mechanical properties and erosion test. The corrosion tests were made in a 1 M NaOH solution. It was found out that PVD coatings display high corrosion resistance.

scholarly journals Evaluation of Corrosion Resistance in 3.5% NaCl Solution of Hybrid Coatings Obtained from Plastics Materials

2021 ◽  
Vol 58 (1) ◽  
pp. 201-209
Author(s):  
Alina Crina Muresan ◽  
Daniela Laura Buruiana ◽  
Gabriel Bogdan Carp ◽  
Sorin Berbece ◽  
Constantin Trus
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Disperse Phase ◽  
Phenol Formaldehyde ◽  
Corrosion Current ◽  
Phenol Formaldehyde Resin ◽  
Hybrid Coatings ◽  
Formaldehyde Resin ◽  
Nacl Solution ◽  
Plastic Materials

In this work, the corrosion resistance of hybrid coatings obtained from plastic materials was evaluated and compared with the corrosion resistance of Zn coatings. Zinc and hybrid coatings were obtained by electrodeposition from zinc sulphate electrolyte. For obtained hybrid coatings it was used as disperse phase two type of plastic materials: phenol-formaldehyde resin and epoxy resin. Polarization was used to measure the corrosion rate and behaviour of zinc and hybrid coatings in 3.5% NaCl solution. Tafel curves show that the including particles of plastic materials in zinc matrix disturbs the cathodic reactions and reduces anodic reaction leading to decrease of corrosion current and increase the corrosion resistance of hybrid coatings obtained at the same electrodeposition parameters as zinc coatings. Smallest values of corrosion rate were evaluated for hybrid coatings obtained with phenol-formaldehyde resin as disperse phase that indicates a good corrosion resistance in 3.5% NaCl solution.

scholarly journals Improving Corrosion Resistance of MRI 230D Mg Alloy by Hybrid Coating of Laser Surface Alloying and Plasma Electrolytic Oxidation

2012 ◽  
Vol 706-709 ◽  
pp. 1209-1214 ◽  
Author(s):  
G. Rapheal ◽  
Subodh Kumar ◽  
Carsten Blawert ◽  
Narendra B. Dahotre
Keyword(s):  
Corrosion Resistance ◽  
Plasma Electrolytic Oxidation ◽  
Laser Surface ◽  
Mg Alloy ◽  
Hybrid Coatings ◽  
Corrosion Tests ◽  
Micro Cracks ◽  
Electrolytic Oxidation ◽  
Plasma Electrolytic ◽  
Scanning Electron

A permanent mould cast creep resistant MRI 230D Mg alloy was laser surface alloyed (LSA) with Al and Al2O3 in order to improve its wear and corrosion resistance. However, this treatment was successful only in improving wear resistance but not corrosion resistance due to the presence of micro−cracks in the coated layer, which has been discussed in an earlier paper. The LSA coated Mg alloy has been further subjected to plasma electrolytic oxidation (PEO) treatment in alkaline silicate electrolyte in order to cover those micro−cracks and improve corrosion resistance, which is discussed in the present manuscript. For comparison, the PEO coating has also been applied on the as−cast MRI 230D Mg alloy. The microstructural characterization of coatings and corroded surfaces was carried out by scanning electron microscope and X−ray diffraction. Electrochemical corrosion tests were conducted in 3.5 wt% NaCl solution having neutral pH to investigate the corrosion behavior. The LSA coatings consisted mainly of β (Mg17Al12) phase, the coatings produced by PEO treatment on MRI 230D Mg alloy consisted mainly of Mg2SiO4 phase, and hybrid coatings of PEO on LSA consisted of Mg2SiO4 and MgAl2O4 phases in the PEO layer. Scanning electron micrographs of the cross−section revealed that the PEO treatment covered the micro−cracks present in the LSA and corrosion tests revealed that it improved the corrosion resistance, though not to the extent of the corrosion resistance of the PEO coated MRI 230D Mg alloy. All the samples exhibited localized form of corrosion.

Sign in / Sign up

Export Citation Format

Share Document