Slippery lubricant-infused intertwining superhydrophobic matrix: preparation and enhanced resistance against abiotic corrosion and microbiologically influenced corrosion / Yinsha Wei in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 2 (03/2023) . - p. 647-660 Titre : Slippery lubricant-infused intertwining superhydrophobic matrix: preparation and enhanced resistance against abiotic corrosion and microbiologically influenced corrosion Type de document : texte imprimé Auteurs : Yinsha Wei, Auteur ; Yizhen Yu, Auteur ; Yunxiang Wang, Auteur ; Yuekun Jing, Auteur ; Hongge Gao, Auteur ; Bingzhi Li, Auteur ; Shugang Hu, Auteur ; Ri Qiu, Auteur ; Yibo Ouyang, Auteur Année de publication : 2023 Article en page(s) : p. 647-660 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier au carbone Anticorrosifs Anticorrosion Caractérisation Chimie biomimétique Corrosion Essais de brouillard salin Hydrophobie Lubrifiants Métaux -- Revêtements protecteurs Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Index. décimale : 667.9 Revêtements et enduits Résumé : The corrosion of carbon steel (CS) is a disastrous threat to artificial engineering in harsh environments, such as underground mines and seawater environments. Herein, we employed facile one-step electrodeposition to prepare a superhydrophobic intertwining structure on a CS surface in an effort to alleviate corrosion. Sophisticated characterization methods suggested that La tetradecanoate formed during the electrodeposition process via an electrochemical reduction reaction. Silicone lubricant acted as the insoluble phase and was infused into the superhydrophobic matrix to yield a biomimetic slippery lubricant-infused surface (LIS) due to the capillary effect from the superhydrophobic intertwining structure to the lubricant phase. Using natural seawater, salt spray and sulfate-reducing bacteria (SRB) suspension as the harsh media, LIS shows excellent corrosion resistance to the underlying metal compared with bare CS and the superhydrophobic surface covering CS because the oil phase acts as a barrier to inhibit the penetration of corrosive species. For the LIS sample after seawater immersion for 20 d, the Icorr was approximately 2 orders of magnitude smaller than that of the bare CS. In addition, after a 5.0 wt% salt spray test for 20 d, the |Z|0.01 Hz of the LIS surface was ca. 3 orders of magnitude larger than that of CS. Furthermore, when immersed in an extremely harsh SRB suspension for 15 d, the |Z|0.01 Hz of LIS was ca. 3 orders of magnitude larger than that of bare CS because LIS can dually prohibit the bioattachment of SRB and avoid the penetration of the highly corrosive metabolite. Thus, the LIS was proven to have prominent anticorrosion properties in harsh corrosive environments. Note de contenu : - Preparation of SHS and LIS onto CS - Morphology, composition and wettability characterization - Corrosion inhibition measurement in different environments - Evaluation of bio-attachment and corrosion inhibition of the coatings in sulfate-reducing bacteria (SRB) suspension - Table 1 : The electrochemical parameters of bare CS, SHS and LIS revealed by potentiodynamic polarization curves during immersion in seawater - Table 2 : The electrochemical parameters of CS and LIS were revealed by potentiodynamic polarization curves after exposure to 5.0 wt% salt spray for certain periods - Table 3 : The electrochemical parameters of CS and LIS were revealed by potentiodynamic polarization after being immersed in the SRB suspension for certain periods DOI : https://doi.org/10.1007/s11998-022-00698-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00698-8.pdf?pdf=button% [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39309 [article]

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