通过合金设计和热处理增强钴基喷雾沉积涂层的抗重油堵塞性能

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2024-11-05 DOI:10.1016/j.surfcoat.2024.131528

Fellipy S. Rocha , Pedro R.T. Avila , Oumar Touré , Marwan Azzi , Fadila Khelfaoui , Luc Vernhes , Gregory S. Patience , Jolanta E. Klemberg-Sapieha , Ludvik Martinu

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引用次数: 0

摘要

重油加氢裂化会污染反应器的关键部件，导致过早停机。开发具有优异抗结焦、抗硫化和抗磨损性能的材料至关重要。高速全氧燃烧（HVOF）涂层作为一种工业解决方案，可以改善材料的性能。本研究探讨了合金元素对 HVOF 喷涂 Co-Cr-Mo-Si 涂层模型的影响及其在防止重油结垢方面的作用。热处理减少了涂层的不均匀性和微结构缺陷，大大提高了涂层的防污能力。还开发了一种新型光学图像处理方法，用于半定量评估表面污垢强度。这项研究深入揭示了合金成分、微观结构、热处理和表面能之间在优化涂层防重油污垢性能方面的复杂相互作用。

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Enhanced heavy oil fouling resistance of cobalt-based spray-deposited coatings by alloy design and heat treatment

Heavy oil hydrocracking fouls critical reactor components, causing premature turnarounds. Developing materials with superior resistance to coking, sulfidation, and wear proves crucial. High-velocity oxy-fuel (HVOF) coating improves materials' properties as an industrial-ready solution. This study explores the effect of alloying elements on the HVOF-sprayed Co-Cr-Mo-Si coating model and their role in protecting against heavy oil fouling. Heat treatment reduced the coatings' inhomogeneity and microstructural defects, substantially improving their protection against fouling. A novel optical image treatment has been developed to semi-quantitatively assess the surface fouling intensity. The study provides insights into the complex interplay between alloy composition, microstructure, heat treatment, and surface energy in optimizing coating protection against heavy oil fouling.

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.