Photo-generated cathodic protection performance of electrophoretically Co-deposited layers of TiO 2 nanoparticles and graphene nanoplatelets on steel substrate

2014 ◽  
Vol 258 ◽  
pp. 62-71 ◽  
Author(s):  
Ji Hoon Park ◽  
Jong Myung Park
Keyword(s):  
Cathodic Protection ◽  
Steel Substrate ◽  
Graphene Nanoplatelets

The study of the electrochemical properties of zinc-rich coating on the base of water sodium silicate

2019 ◽  
Vol 24 (4) ◽  
pp. 51-58
Author(s):  
Le Hong Quan ◽  
Nguyen Van Chi ◽  
Mai Van Minh ◽  
Nong Quoc Quang ◽  
Dong Van Kien
Keyword(s):  
Carbon Steel ◽  
Electrochemical Properties ◽  
Sodium Silicate ◽  
Cathodic Protection ◽  
Electrochemical Impedance ◽  
Steel Substrate ◽  
Electrical Contact ◽  
Electrochemical Impedance Spectra ◽  
Pure Zinc ◽  
Electric Circuits

The study examines the electrochemical properties of a coating based on water sodium silicate and pure zinc dust (ZSC, working title - TTL-VN) using the Electrochemical Impedance Spectra (EIS) with AutoLAB PGSTAT204N. The system consists of three electrodes: Ag/AgCl (SCE) reference electrode in 3 M solution of KCl, auxiliary electrode Pt (8x8 mm) and working electrodes (carbon steel with surface treatment up to Sa 2.5) for determination of corrosion potential (Ecorr) and calculation of equivalent electric circuits used for explanation of impedance measurement results. It was shown that electrochemical method is effective for study of corrosion characteristics of ZSC on steel. We proposed an interpretation of the deterioration over time of the ability of zinc particles in paint to provide cathodic protection for carbon steel. The results show that the value of Ecorr is between -0,9 and -1,1 V / SCE for ten days of diving. This means that there is an electrical contact between the zinc particles, which provides good cathodic protection for the steel substrate and most of the zinc particles were involved in the osmosis process. The good characteristics of the TTL-VN coating during immersion in a 3,5% NaCl solution can also be explained by the preservation of corrosive zinc products in the coating, which allows the creation of random barrier properties.

Anticorrosion Protection of TiO2 Nanofilm on the Surface of Carbon Steel

2021 ◽  
Vol 21 (10) ◽  
pp. 5253-5259
Author(s):  
Yu Zhang ◽  
Ruijian Song ◽  
Xiang Zhang
Keyword(s):  
Carbon Steel ◽  
Composite Film ◽  
Cathodic Protection ◽  
Steel Substrate ◽  
Base Material ◽  
Photogenerated Electron ◽  
Maintenance Cost ◽  
Photoelectric Conversion Efficiency ◽  
Low Carbon ◽  
Photoelectric Conversion

Carbon steel (CS) is the preferred base material for construction in various industries due to its low cost; however, industrial equipment failure caused by carbon steel corrosion can lead to several environmental risks and safety hazards, thus limiting its application scenarios. Enhancing the corrosion resistance of carbon steel and reducing the maintenance cost of carbon steel substrate have become a hot topic of current research. Therefore, in this study, a zinc oxide/polyaniline-titanium dioxide composite film (ZnO/PAni-TiO2) with long-lasting photogenerated cathodic protection was constructed based on the photoelectric conversion properties of TiO2. This new TiO2 composite film, which can avoid photogenerated electron–hole complexation, significantly enhanced the photoelectric conversion efficiency of TiO2, thereby decreasing the anodic corrosion current density of low carbon steel and enhancing the cathodic protection of carbon steel. Hence, it is expected to provide a new direction for the preparation of corrosion-resistant TiO2-laminated carbon steel nanofilms.

Vibration based Energy Harvester Employing ZnO Film on the Stainless Steel Substrate

2013 ◽  
Vol 133 (4) ◽  
pp. 126-127 ◽  
Author(s):  
Shota Hosokawa ◽  
Motoaki Hara ◽  
Hiroyuki Oguchi ◽  
Hiroki Kuwano
Keyword(s):  
Stainless Steel ◽  
Energy Harvester ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Zno Film

Wear behavior of laser cladded WC-FeAl coating on 321 stainless steel substrate

2020 ◽  
Vol 32 (4) ◽  
pp. 042015
Author(s):  
Alireza Mostajeran ◽  
Reza Shoja-Razavi ◽  
Morteza Hadi ◽  
Mohammad Erfanmanesh ◽  
Hadi Karimi
Keyword(s):  
Stainless Steel ◽  
Stainless Steel Substrate ◽  
Wear Behavior ◽  
Steel Substrate

A Practical Ultrasonic Inspection Method for Detecting and Characterising Defects Found Within Composite Repairs

2018 ◽  
Author(s):  
J Downing ◽  
A Hook
Keyword(s):  
Wall Thickness ◽  
Steel Substrate ◽  
Ultrasonic Method ◽  
Ultrasonic Inspection ◽  
Heat Exposure ◽  
Matrix Cracking ◽  
Ultrasonic Technique ◽  
Inspection Method ◽  
Composite Repairs ◽  
Layered Matrix

Two steel substrate test panels were developed to represent common plate thicknesses found on naval vessels and scanned using the Babcock developed ultrasonic technique. One sample comprised of a series of slotted surface breaking flaws of varying widths and through thicknesses to represent fracturing/cracking. The inspection method detected simulated cracking to a depth of 2mm and 0.5mm in width. The second sample included numerous loss of wall thickness areas of varying diameters and through thicknesses, with the smallest detectable loss of wall thickness being 0.1mm at a 15mm diameter. After proving confidence in detection, there was a need to characterise flaws to provide support and ascertain a repair action. Samples were produced that were subjected to either impact or heat exposure to induce realistic representative damage. The practical ultrasonic method was successfully used to independently characterise between the samples, with induced de-laminations caused by blisters, and multi layered matrix cracking caused by varying levels of projectile impacts, due to their unique morphology.

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