Advances in anti-corrosion coatings on magnesium alloys and their preparation methods / Jing Tan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 3 (05/2024) . - p. 811-825 Titre : Advances in anti-corrosion coatings on magnesium alloys and their preparation methods Type de document : texte imprimé Auteurs : Jing Tan, Auteur ; Lizi Liu, Auteur ; Hui Wang, Auteur ; Jinjie Luo, Auteur Année de publication : 2024 Article en page(s) : p. 811-825 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion Dépôt électrophorétique Electrophorèse Magnésium -- Alliages Magnétron Métaux -- Revêtements protecteurs Polymères Revêtement métallique Revêtements inorganiques Revêtements organiques Système de pulvérisation (technologie) Technique des plasmas Traitement hydrothermique Index. décimale : 667.9 Revêtements et enduits Résumé : Anti-corrosion coatings on magnesium alloys serve as a barrier that inhibits external agents such as salt and acid rain from interacting with the alloy surface. By isolating the alloy from air and moisture, these coatings delay the onset of oxidation and corrosion, thereby enhancing the alloy’s durability. Consequently, the formulation of such coatings is a critical step in advancing the magnesium alloy industry. This review outlines the types and anti-corrosive mechanisms of coatings for magnesium alloys, namely, organic, inorganic, metallic, and composite coatings. Additionally, various methods for coating preparation are discussed, including hydrothermal methods, chemical vapor deposition, electrodeposition, microarc oxidation, and magnetron sputtering. Finally, the review offers directions and conceptual frameworks for future research on magnesium alloy anti-corrosion coatings. Note de contenu : - TYPE AND ANTI-CORROSION MECHANISM OF MAGNESIUM ALLOY COATINGS : Inorganic coating - Organic coating - Metal coating - Composite coating - PREPARATION METHOD OF MAGNESIUM ALLOY COATING : Hydrothermal method - Chemical vapor deposition method - Electrophoretic deposition method - Plasma electrolytic oxidation method - Magnetron sputtering technology - Spraying method - Other methods - Table 1 : Preparation and application of anti-corrosion coatings on some magnesium alloys DOI : https://doi.org/10.1007/s11998-023-00887-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00887-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41061 [article]

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Investigation of different pre-treatments of chromium leather shavings to improve biogas production in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)  

[article]  inJOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 2 (Année 2020) . - 14 p. Titre : Investigation of different pre-treatments of chromium leather shavings to improve biogas production Type de document : texte imprimé Année de publication : 2020 Article en page(s) : 14 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biogaz Chimie analytique Cuirs et peaux -- Déchets -- Recyclage Dérayures de cuir Digestion anaérobie Extrusion (mécanique) Traitement hydrothermique Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Chromium shavings are wet by-products of the leather industry, of which thousands of tons accrue worldwide during leather manufacture. Due to their chromium content, chromium shavings are responsible for the most important ecological challenges caused by the leather industry. They are stable towards temperatures of up to 110 °C and enzymatic degradation. This high stability is caused by the three-dimensional native structure, typical for collagen, and additional chemical cross-links between the collagen fibres achieved by Cr3+ salts in the tanning process. Therefore, hitherto chromium shavings are not utilized industrially to produce biogas. In order to generate biogas, this stable structure has to be denatured. Chromium shavings were pre-treated by extrusion and hydrothermal methods. To prove the enzymatic degradability, the different pre-treatments were evaluated by differential scanning calorimetry (DSC), enzymatic assays, and by measuring the solubility in water. The biogas production potential was investigated using batch trials to examine feasibility. Results demonstrated that both pre-treatments allowed enzymatic attack and increased degradability of the chromium shavings reducing the lag-phase of biogas production and the remaining waste. Note de contenu : - INTRODUCTION : Anaerobic digestion of chromium leather waste - Collagen structure and stability - Destabilization of chromium leather waste - MATERIAL AND METHODS : Material - Pre-treated samples - Extrusion - Hydrothermal treatment - Scanning electron microscope (SEM) - Differential scanning calorimetry (DSC) - Enzyme assays - Solubility in water - Biogas production - RESULTS AND DISCUSSION : Assessment of the pre-treated samples - Biogas production - Table 1 : Pre-treatment conditions and sample nomenclature DOI : https://doi.org/10.1186/s42825-020-00028-x En ligne : https://link.springer.com/content/pdf/10.1186/s42825-020-00028-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37338 [article]

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