Smart coating for corrosion protection by adopting nano particles

2012 ◽  
Vol 74 (3) ◽  
pp. 461-469 ◽  
Author(s):  
N. Selvakumar ◽  
K. Jeyasubramanian ◽  
R. Sharmila
Keyword(s):  
Corrosion Protection ◽  
Nano Particles ◽  
Smart Coating

Smart coating based on double stimuli-responsive microcapsules containing linseed oil and benzotriazole for active corrosion protection

2018 ◽  
Vol 130 ◽  
pp. 56-63 ◽  
Author(s):  
Débora Abrantes Leal ◽  
Izabel Cristina Riegel-Vidotti ◽  
Mário Guerreiro Silva Ferreira ◽  
Cláudia Eliana Bruno Marino
Keyword(s):  
Corrosion Protection ◽  
Linseed Oil ◽  
Stimuli Responsive ◽  
Smart Coating ◽  
Active Corrosion

scholarly journals Smart coating with dual-pH sensitive, inhibitor-loaded nanofibers for corrosion protection

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Chao Li ◽  
Xiaolei Guo ◽  
Gerald S. Frankel
Keyword(s):  
Corrosion Protection ◽  
Spectroscopic Analysis ◽  
Polyvinyl Butyral ◽  
Ph Sensitive ◽  
Electrospinning Technique ◽  
Smart Coatings ◽  
Ph Conditions ◽  
Smart Coating ◽  
Coating Matrix ◽  
Recent Attention

AbstractSmart coatings that provide corrosion protection on demand have received a lot of recent attention. In the present study, nanofibers containing a corrosion inhibitor were prepared by a coaxial electrospinning technique, which addresses the limitations of inhibitor-loaded microcapsules or nanocontainers. The as-prepared nanofibers have a core-shell structure with Ce(NO3)3 and the chitosan/polyacrylic acid polyelectrolyte coacervate as the core and shell materials, respectively. UV-vis spectroscopic analysis confirms that the nanofibers are pH-sensitive and able to release the enclosed Ce(NO3)3 at both low and high pH conditions, which are spontaneously generated during corrosion at local anodes and cathodes, respectively. A coating system consisting of such nanofibers within a polyvinyl butyral coating matrix exhibits improved corrosion protection of an AA2024-T3 substrate. Moreover, the embedded Ce(NO3)3-loaded nanofibers can persistently release Ce(NO3)3 to impede corrosion of AA2024-T3 when the artificially damaged coating sample is exposed to NaCl solution.

Electron holography of catalysts

1995 ◽  
Vol 53 ◽  
pp. 416-417
Author(s):  
A. K. Datye ◽  
D. S. Kalakkad ◽  
L. F. Allard ◽  
E. Völkl
Keyword(s):  
Heterogeneous Catalysts ◽  
High Surface ◽  
High Surface Area ◽  
Atomic Scale ◽  
Nano Particles ◽  
Phase Image ◽  
Electron Holography ◽  
Specimen Thickness ◽  
Phase Information ◽  
Particle Structure

The active phase in heterogeneous catalysts consists of nanometer-sized metal or oxide particles dispersed within the tortuous pore structure of a high surface area matrix. Such catalysts are extensively used for controlling emissions from automobile exhausts or in industrial processes such as the refining of crude oil to produce gasoline. The morphology of these nano-particles is of great interest to catalytic chemists since it affects the activity and selectivity for a class of reactions known as structure-sensitive reactions. In this paper, we describe some of the challenges in the study of heterogeneous catalysts, and provide examples of how electron holography can help in extracting details of particle structure and morphology on an atomic scale.Conventional high-resolution TEM imaging methods permit the image intensity to be recorded, but the phase information in the complex image wave is lost. However, it is the phase information which is sensitive at the atomic scale to changes in specimen thickness and composition, and thus analysis of the phase image can yield important information on morphological details at the nanometer level.

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