scholarly journals (Mg rich primer-powder topcoat) coating system for the corrosion protection of Al alloys

2017 ◽  
Vol 102 ◽  
pp. 138-143 ◽  
Author(s):  
Junren Lin ◽  
Casey Orgon ◽  
Dante Battocchi ◽  
Gordon P. Bierwagen
Keyword(s):  
Corrosion Protection ◽  
Al Alloys ◽  
Coating System

Plasma Surface Treatment: Effects on Mechanical and Corrosion Protection Properties of Hybrid Sol–Gel Coatings

2019 ◽  
Author(s):  
R. Subasri
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Surface Treatment ◽  
Corrosion Protection ◽  
Sol Gel ◽  
Surface Cleaning ◽  
Al Alloys ◽  
Plasma Surface ◽  
Wet Chemical ◽  
Pre Treatment

Surface cleaning and activation of substrates are two critical processes that affect the mechanical and corrosion resistance properties of protective coatings when deposited on the substrates. Surface cleaning removes the contaminants, for example, grease on the substrate, and surface activation introduces active bonds on the substrate thereby increasing the surface free energy. Conventionally, surface cleaning and activation of aluminum and its alloys are carried out by a wet chemical technique. A convenient and safe alternate to the wet chemical cleaning/activation would be to use plasma for the same purpose. Plasma surface pre-treatment greatly improves adhesion of coatings deposited, which is very vital for good corrosion protection and mechanical properties such as scratch and abrasion resistance. Cold and atmospheric air plasma treatments have been the most widely studied pre-treatments for Al alloys. This article will discuss the advancements in the use of plasma treatment on Al/Al alloys and its effect on corrosion resistance and mechanical properties of coatings deposited after the surface treatment.

Experimental Study on Corrosion Prevention of a Multilayer Coating System

2014 ◽  
Vol 881-883 ◽  
pp. 1307-1311
Author(s):  
Huan Yang ◽  
Shi Qiu ◽  
Yu Feng Lu ◽  
Zhen Xing Liu ◽  
Fei Lu
Keyword(s):  
Corrosion Protection ◽  
Multilayer Coating ◽  
Metallic Matrix ◽  
Coating System ◽  
Corrosion Prevention ◽  
Aggregate Concrete ◽  
Layered Coating ◽  
Prevention System ◽  
Masking Function ◽  
Energy Disperse Spectroscopy

Aiming to the corrosion prevention of 16MnR steel surface in the light aggregate concrete, the paper applies a kind of corrosion prevention system composed of layered coating. It utilizes measurement methods such as field emission scanning electron microscopy and energy disperse spectroscopy to study the corrosion and change process of this kind of coating system in the surface of 16MnR steel in the environment of light aggregate concrete and make the evaluation on its effect of corrosion protection. The experiment result indicates that due to its mechanical masking function, the layered coating system can effectively restrain immersion of the corrosive medium in early corrosion period so as to protect the metallic matrix. With the deepening of the corrosion, the nanometer Zn particle has the function of cathodic protection on the metallic matrix, effectively enhancing the comprehensive corrosion protection ability of the coating system.

scholarly journals Evaluation of Corrosion Protection of Self-Healing Coatings Containing Tung and Copaiba Oil Microcapsules

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Nicolas Augusto Paolini ◽  
Alexandre Gonçalves Cordeiro Neto ◽  
Alana Cristine Pellanda ◽  
Agne Roani de Carvalho Jorge ◽  
Bryan de Barros Soares ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Open Circuit ◽  
Steel Plates ◽  
Electrochemical Cells ◽  
Coating System ◽  
Self Healing ◽  
Protection Efficiency ◽  
Tung Oil ◽  
Electrochemical Tests ◽  
Copaiba Oil

The objective of the current research is to evaluate and compare the corrosion protection efficiency of the microcapsules containing tung oil and copaiba oil using stereoscopic images, electrochemical tests, open circuit potential (OCP), and polarization curves (Tafel analysis). Carbon steel plates were painted with three different coating systems: (a) a coating system with an automotive primer which served as the control, (b) a coating system with microcapsules containing 3% tung oil, and (c) a coating system with microcapsules containing 3% copaiba oil. A crosscut was performed using a scalpel on the coating surfaces to promote the release of the oils, and after drying, electrochemical cells were assembled using electrolyte 3% NaCl. From OCP analyses, it was verified that the coating system containing tung oil loaded microcapsules obtained more positive final values than the control system and the coating system containing copaiba oil loaded microcapsules. The stereoscope images corroborate the OCP results, and the polarization curve analyses also indicated that the microcapsules containing tung oil offer better corrosion protection than the other systems studied.

A novel approach to heal the sol–gel coating system on magnesium alloy for corrosion protection

2010 ◽  
Vol 55 (7) ◽  
pp. 2424-2429 ◽  
Author(s):  
Xiankang Zhong ◽  
Qing Li ◽  
Junying Hu ◽  
Shiyan Zhang ◽  
Bo Chen ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Protection ◽  
Sol Gel ◽  
Coating System ◽  
Novel Approach

Short-Term Corrosion Protection of Materials Using Nanocoatings

2015 ◽  
Vol 818 ◽  
pp. 89-92
Author(s):  
Daniela Pavelková ◽  
Lenka Koldová ◽  
Jitka Podjuklová ◽  
René Siostrzonek ◽  
Zdeněk Pěnička ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Experimental Work ◽  
Steel Structures ◽  
Coating System ◽  
Short Term ◽  
Factors Affecting ◽  
Experimental Part ◽  
Application Potential ◽  
Technical University ◽  
High Application

The preservation ability of coatings applied to the materials of steel products, steel structures, etc., for short-term corrosion protection is a very delicate and modern theme. In cooperation with the project Pre-seed, we can pay closer attention to activities involved with this topic. The project Pre-seed at the Technical University of Ostrava, which is part of the Operational Programme of Research and Development for Innovation, attempts to support the preparation of the commercialization of promising technologies and inventions with high application potential that were developed at the Technical University of Ostrava. This paper focuses on the short-term corrosion protection of steel products, steel structures, and engineering products using thin nanocoatings. This experimental work is primarily concerned with the production and development of samples that demonstrate the innovativeness and functionality of the issue. Furthermore, the project addresses important factors affecting the quality and durability of the coating system. The results of the experimental part show us some very interesting outputs that need to be further studied and developed.

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