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Corrosion protection ability of hydrophobic zinc based coordination polymers on mild steel surface in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
[article]
Titre : Corrosion protection ability of hydrophobic zinc based coordination polymers on mild steel surface Type de document : texte imprimé Année de publication : 2023 Article en page(s) : p. 1145-1155 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Angle de contact
Anticorrosifs
Anticorrosion
composés de coordination
Corrosion -- Analyse
Diffractométrie de rayons X
Fourier, Spectroscopie infrarouge à transformée de
Hydrophobie
Métaux -- Revêtements protecteurs
Morphologie (matériaux)
Polyfluorure de vinylidène
Polymères -- Synthèse
Revêtements organiques
ZincIndex. décimale : 667.9 Revêtements et enduits Résumé : A series of Zn2+ based hydrophobic coordination polymers (CPs) have been synthesized by varying methylene spacers length (m = 1 to m = 6) of aliphatic dicarboxylic acids followed by reaction with the zinc acetate by using hydrothermal method. The synthesized CPs were coated on the mild steel (MS) specimens to investigate the effect of methylene spacers length of dicarboxylic acids on hydrophobicity and corrosion behavior. The synthesized CPs and their coatings on MS have been characterized by various instrumental techniques such as Fourier transform infrared (FTIR) spectroscopy, powder X-ray diffraction (PXRD), Field Emission Scanning Electron Microscopy (FE-SEM), water contact angle (WCA) measurements. FTIR and PXRD measurements confirm the formation of CPs whereas the FE-SEM images of suberic acid polymer (SUAP) reveal compact distribution of sphere-like aggregates. WCA measurements showed that the bare MS including CPs coatings on MS up to methylene spacers length m = 4 is hydrophilic in nature; however, the coating of longest methylene spacers length CP (SUAP, m = 6) showed hydrophobic nature with water contact angle of ~ 108.6°. Furthermore, the obtained hydrophobic SUAP CP with polyvinylidene fluoride (PVDF) as binder was coated on MS to study its anticorrosion behavior for the protection of MS. The anticorrosion performance of the developed SUAP coating was investigated by open-circuit potential (OCP) and potentiodynamic polarization techniques. The corrosion rate has been calculated from potentiodynamic polarization curves for the bare MS and SUAP coated MS showed significant improvement in the anticorrosion behavior of the developed SUAP coating. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials and method - Synthesis of coordination polymers - Coatings - Corrosion study
- RESULTS AND DISCUSSION : Designing of coordination polymers -
FTIR analysis - Morphology - Powder X-ray diffraction analysis - Contact angle - Corrosion studies
- Table 1 : The composition used for preparation of coatings
- Table 2 : Potentiodynamic polarization parameters for bare mild steel (MS), and coated MS specimens in 3.5 wt.% NaClDOI : https://doi.org/10.1007/s11998-022-00734-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00734-7.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39454
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 1145-1155[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24069 - Périodique Bibliothèque principale Documentaires Disponible Corrosion severity : a function of contaminants, components and coatings / Shiv Charan Prajapati in PAINTINDIA, Vol. LXIV, N° 10 (10/2014)
[article]
Titre : Corrosion severity : a function of contaminants, components and coatings Type de document : texte imprimé Auteurs : Shiv Charan Prajapati, Auteur ; P. K. Kamani, Auteur Année de publication : 2014 Article en page(s) : p. 94-100 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion
Cloquage (défauts)
Corrosion -- Analyse
Humidité
Polluants
Rayures
Revêtements -- Détérioration
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : A corrosion study with respect to contaminants (water soluble salts I ike sulphates, ch lorides and nitrates etc.), design of the components (macro and micro defects developed due to improper design and physico-chemical behaviour of coatings (adhesion, permeation of air and moisture) etc. was done by several scientists and found that these elements prove to be the deciding factors in rate of corrosion. The presence of soluble salts (chloride, sulphate & nitrate) and their effect of the coating-metal interface was studied along with the chemistry of coating, water and oxygen permeabi I ity, coating th ickness and metal surface preparation. The macroscopic defects, caused due to improper design ing, handl ing, etc. also causes corrosion. The surface anomalies have their own rote in deciding the coating life. There are some coating systems which can reduce or postpone corrosion mechanism. Note de contenu : - Effect of contaminants
- Blistering and adhesion
- Organic coatings
- Experimental
- Corrosion scratch test
- Humidity test
- Table 1 : Resins/binders with their composition
- Table 2 : Test results
- Table 3 : Humidity test resutls
- Table 4 : Blistering results
- Table 5 : Under film corrosion
- Table 6 : Water and oxygen permeability of resins
- Table 7 : Occurrence of atmospheric sulfur compounds according to ISO N43E
- Table 8 : Occurence of airborne salinity according to ISO N53E
- Table 9 : Solubility of reaction productEn ligne : https://drive.google.com/file/d/1xjBojSsmtY12Lr9pWqywt92lhQtehKMA/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40370
in PAINTINDIA > Vol. LXIV, N° 10 (10/2014) . - p. 94-100[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16695 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Corrosion under insulation : An in-depth analysis of CUI (Corrosion under isolation) Type de document : texte imprimé Auteurs : Andreas Hoyer, Auteur Année de publication : 2020 Article en page(s) : p. 16-21 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acier au carbone
Acier inoxydable
Anticorrosifs
Corrosion -- Analyse
Corrosion sous isolation
TempératureIndex. décimale : 667.9 Revêtements et enduits Résumé : CUI is well understood, yet pervasive. Despite long-established mitigation methods. It costs the process industry millions of euros annually. Effective prevention based on life-cycle costs can slash the cost of downtime, maintenance repair, and inspection. Note de contenu : - CUI or carbon steel : The mechanism - Contaminants - Temperature - Insulation
- CUI of stainless steel : Alloys - Stress - Temperature - Electrolyte
- Preventing CUI : Organic coating system - Personnel protection cages - Thermal spray aluminium (TSA)
- Inspection of CUI
- Fig. 1 Through-wall corrosion under insulation of a large coated carbon-steel storage tank
- Fig. 2 : Effect of temperature on corrosion of steel in water
- Fig. 3 : Photograph showing ESCC of a 04 stainless steel evaporator flash tank. The tank was insulated with calcium silicate insulation and operated at temperatures upt to 100°C
- Fig. 4 : Analysis of 304 stainless steel pipe showing transgranular ESCC
- Fig. 5 : Corrosion of carbon steel where wet insulation was in contact with the surface
- Fig. 6 : Typical vessel attachments where water may by-pass insulation (Footnote 9)
- Fig. 7 : How to limit the occurrence of CUI
- Table 1 : Typical service temperatures for thermal insulation materialsEn ligne : https://drive.google.com/file/d/11oN16jmQvn4eqwrWFyXV6DZn18c3K4mb/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33918
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2020) . - p. 16-21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21655 - Périodique Bibliothèque principale Documentaires Disponible Greater efficiency with quick corrosion tests / Marko Soltau in EUROPEAN COATINGS JOURNAL (ECJ), (03/2023)
[article]
Titre : Greater efficiency with quick corrosion tests : A useful tool to supplement and reduce salt spray and humidity tests Type de document : texte imprimé Auteurs : Marko Soltau, Auteur ; Benjamin Traxel, Auteur Année de publication : 2023 Article en page(s) : p. 64-68 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Corrosion -- Analyse
Corrosion -- Normes
Essais accélérés (technologie)
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Corrosion protection is a time-consuming endeavour in the paints and coatings sector. New types of binders, functional fillers, anti-corrosion pigments, corrosion inhibitors and much more present a variety of ways to optimise corrosion protection when developing new coatings. In this article we discuss alternatives to usefully supplement and reduce a long series of tests and permit an initial interim conclusion. Note de contenu : - Conventional method unsuitable for rapid screening
- Quick tests to minimise longer, extensive testing
- Critical testing to avoid flash rust
- The "watch glass test"
- The "bucket test"
- The "24 H SST wet adhesion test"
- Quick test limitations suggested use
- Table : Corrosivity categories and test durations according to DIN EN ISO 12944-2:2018-04 and DIN EN ISO 12944-6:2018-06En ligne : https://drive.google.com/file/d/1aGmv8RhQP5Tf9TFY0-87SkMcIJonsJD-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38909
in EUROPEAN COATINGS JOURNAL (ECJ) > (03/2023) . - p. 64-68[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23900 - Périodique Bibliothèque principale Documentaires Disponible Study on potential distribution of atmospheric corrosion using a scanning Kelvin probe / J. Wang in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B3 (09/2005)
[article]
Titre : Study on potential distribution of atmospheric corrosion using a scanning Kelvin probe Type de document : texte imprimé Auteurs : J. Wang, Auteur ; Y. Wang, Auteur Année de publication : 2005 Article en page(s) : p. 197-200 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Construction métallique -- Corrosion
Corrosion -- Analyse
Kelvin, Sonde deLa sonde de Kelvin est un dispositif permettant de mesurer la différence de potentiel de Volta entre deux surfaces métalliques, ou bien entre une surface métallique et un électrolyte.
- Principe : Deux surfaces métalliques séparées par un isolant (diélectrique) forment un condensateur. Ce condensateur est caractérisé par sa capacité électrique C. La charge électrique Q est alors reliée à la différence de potentiel de Volta Δψ par : Q = C⋅Δψ
Si l'on éloigne ou que l'on rapproche les surfaces, cela fait varier la capacité du système. Si les deux surfaces sont reliées par un fil résistant, il en résulte une modification de l'écoulement de charge dans le fil, donc une variation de Q. Cela permet de déterminer le potentiel de Volta Δψ.
- Applications : Le principe de la sonde de Kelvin est utilisé dans certains microscopes à force atomique, nommés KPFM (Kelvin probe force microscopy).Index. décimale : 667.9 Revêtements et enduits Résumé : A scanning Kelvin probe setup was developed for potential map measurements, and the characteristic of a potential distribution for atmospheric corrosion of metal with salt particle deposition was investigated using this setup. It was found that as the relative humidity increased to a level higher than that over the saturated solution of the salt, the potential map changed from homogeneity into heterogeneity, which formed initially a valley, then a volcano shape. As a result, atmospheric corrosion was initiated due to the heterogeneity shown by the potential distribution, which led to the formation of anodes and cathodes on the metal surface. It also indicated that ambient relative humidity and dry-and-wet cycles played an important role in accelerating the corrosion process shown by the changing potential map. In addition, the potential map had a close relationship with the chemical maps of the corrosion products. Based on the above findings, a model was proposed and discussed for describing the initiation of atmospheric corrosion resulting from salt particle deposition. Note de contenu : - The potential map over metal surface with salt particle deposition
- The effect of relative humidity and wet-dry cycles on a potential map
- The correlation between the potential map and the chemical map
- The model of a potential map for atmospheric corrosion initiation caused by salt particle depositionDOI : 10.1007/BF02699573 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699573.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5416
in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 88, B3 (09/2005) . - p. 197-200[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003027 - Périodique Bibliothèque principale Documentaires Disponible