scholarly journals Corrosion resistance of BIS 2062-grade steel coated with nano-metal-oxide mixtures of iron, cerium, and titanium in the marine environment

2018 ◽  
Vol 8 (1-2) ◽  
pp. 41-51 ◽  
Author(s):  
P. Muhamed Ashraf ◽  
R. Anuradha
Keyword(s):  
Corrosion Resistance ◽  
Metal Oxide ◽  
Marine Environment ◽  
Grade Steel

scholarly journals Corrosion Resistance of Fiber-reinforced Geopolymer Structural Concrete in a Simulated Marine Environment

2021 ◽  
Author(s):  
Khaled Sobhan ◽  
Francisco Martinez ◽  
D.V. Reddy
Keyword(s):  
Corrosion Resistance ◽  
Marine Environment ◽  
Electrochemical Method ◽  
Ordinary Portland Cement ◽  
Load Capacity ◽  
Fiber Reinforced ◽  
Structural Concrete ◽  
Accelerated Corrosion ◽  
Damaged Beams

The corrosion resistance of fly ash-based geopolymer structural concrete (GPC), with or without fibers, was investigated in a simulated marine environment, and compared with that of ordinary Portland cement structural concrete. The corrosion behavior is studied through an electrochemical method for inducing accelerated corrosion. The fiber-reinforced specimens contained polyolefin fibers in the amounts of 0.1%, 0.3%, and 0.5% by volume. Several artificial corrosion conduits were introduced into the specimens reaching up to the rebars. This process enhanced the rate of laboratory corrosion in GPC. The corrosion-damaged beams were then analyzed through a method of crack scoring, and determination of steel mass loss and residual flexural load capacity. The fiber-reinforced corroded GPC beams showed a 24% reduction in crack scores, and a 109% increase in residual flexural load capacity, compared to unreinforced corroded GPC beams. This shows promise of fiber-reinforced GPC as a sustainable structural material in the marine environment.

Corrosion resistance of composite coating used for fastener protection

2019 ◽  
Vol 66 (5) ◽  
pp. 595-602
Author(s):  
Zhifeng Lin ◽  
Likun Xu ◽  
Xiangbo Li ◽  
Li Wang ◽  
Weimin Guo ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Carbon Steel ◽  
Composite Coating ◽  
Marine Environment ◽  
Electrochemical Impedance ◽  
Salt Spray ◽  
Diffusion Method ◽  
Economic Losses ◽  
Neutral Salt ◽  
Content Type

Purpose The purpose of this paper is to examine the performance of a fastener composite coating system, sherardized (SD) coating/zinc-aluminum (ZA) coating whether it has good performance in marine environment. Design/methodology/approach In this paper, SD coating was fabricated on fastener surface by solid-diffusion method. ZA coating was fabricated by thermal sintering method. Corrosion behaviours of the composite coating were investigated with potentiodynamic polarization curves, open circuit potential and electrochemical impedance spectroscopy methods. Findings Neutral salt spray (NSS) and deep sea exposure tests revealed that the composite coating had excellent corrosion resistance. Polarization curve tests showed that corrosion current density of the sample with composite coating was significantly decreased, indicating an effective corrosion protection of the composite coating. OCP measurement of the sample in NaCl solution demonstrated that the composite coating had the best cathodic protection effect. The good corrosion resistance of the composite coating was obtained by the synergy of SD and ZA coating. Practical implications SD/ZA coating can be used in marine environment to prolong the life of carbon steel fastener. Social implications SD/ZA composite coating can reduce the risk and accident caused by failed fastener, avoid huge economic losses. Originality/value A new kind of composite coating was explored to protect the carbon steel fastener in marine environment. And the composite coating has the long-term anti-corrosion performance both in simulated and marine environment test.

scholarly journals Alkoxid-CVD metal oxide surface coating on aluminum and improvement effect on pitting corrosion resistance.

1991 ◽  
Vol 41 (8) ◽  
pp. 522-527
Author(s):  
Takeshi SAKAMOTO ◽  
Masahiro SEO ◽  
Norio SATO ◽  
Fumiharu JITOH ◽  
Motohiro NABAE ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Metal Oxide ◽  
Pitting Corrosion ◽  
Surface Coating ◽  
Oxide Surface ◽  
Metal Oxide Surface ◽  
Pitting Corrosion Resistance ◽  
Improvement Effect

Dissolution and bandgap paradigms for predicting the toxicity of metal oxide nanoparticles in the marine environment: an in vivo study with oyster embryos

2017 ◽  
Vol 12 (1) ◽  
pp. 63-78 ◽  
Author(s):  
Seta Noventa ◽  
Christian Hacker ◽  
Darren Rowe ◽  
Christine Elgy ◽  
Tamara Galloway
Keyword(s):  
Metal Oxide ◽  
Marine Environment ◽  
Metal Oxide Nanoparticles ◽  
In Vivo Study ◽  
Oxide Nanoparticles

Influence of chromium additions on corrosion resistance of Co75·5Si13·5B9Nb3Cu1metallic glass in marine environment

2002 ◽  
Vol 37 (1) ◽  
pp. 69-75 ◽  
Author(s):  
A. Pardo ◽  
E. Otero ◽  
M. C. Merino ◽  
M. D. López ◽  
M. Vázquez ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Marine Environment

Metal oxide electrocatalyst support for carbon-free durable electrodes with excellent corrosion resistance at high potential conditions

2021 ◽  
Author(s):  
Yuuki Sugawara ◽  
Takuya Hihara ◽  
Gopinathan M. Anilkumar ◽  
Keigo Kamata ◽  
Takeo Yamaguchi
Keyword(s):  
Corrosion Resistance ◽  
Metal Oxide ◽  
Titanium Oxide ◽  
Carbon Support ◽  
High Potential ◽  
Catalytic Reactions ◽  
Excellent Corrosion Resistance ◽  
Potential Conditions

Corrosion-resistive conductive titanium oxide exhibited remarkably higher durability than a carbon support during electrochemical catalytic reactions under high potential conditions.

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