Investigating the anticorrosion properties of inhibitor-modified perfluorinated cerium-based metal-organic frameworks on the cathodic delamination of organically coated galvanised steel

IF 10.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2026-04-01 Epub Date: 2026-01-07 DOI:10.1016/j.corsci.2026.113607

Gareth Jones , Patrick Keil , Enrico Andreoli , Stephen Shearan , Geraint Williams

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引用次数: 0

Abstract

The corrosion protection and inhibitor delivery properties of the F4_MIL-140A(Ce) metal organic framework (Ce-MOF in short) in preventing corrosion-driven cathodic delamination when dispersed within polyvinylbutyral (PVB) coatings applied to hot-dip galvanized steel is investigated. The inhibition efficiency of F4_MIL-140A(Ce) is evaluated using time-lapse imaging and an in-situ scanning Kelvin probe (SKP) technique to quantify coating delamination rates. Delamination rates become progressively reduced upon addition of increasing quantities of F4_MIL-140A(Ce) to the PVB, which is attributed to the release of the organic linker into the underfilm electrolyte. The properties of F4_MIL-140A(Ce) as a means of storing and releasing potential inhibition species is investigated by adsorbing Benzotriazole, 8-hydroxyquinoline and 2-mercaptobenzothiazole on the surface of the Ce-MOF to produce a series of pigments which were subsequently dispersed within PVB. The incorporation of all inhibitors to F4_MIL-140A(Ce) significantly improves performance, with no delamination observed over a 24 h period when stored 2-mercaptobenzothiazole is present. Quantification of inhibitor release from the F4_MIL-140A(Ce) pigment is confirmed by UV–vis and SEM/EDX analysis.

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研究了缓蚀剂改性全氟铈基金属有机骨架在有机镀锌钢阴极分层上的防腐性能

研究了F4_MIL-140A（Ce）金属有机骨架（简称Ce- mof）分散在热镀锌钢用聚乙烯醇丁醛（PVB）涂层中的防腐性能和缓蚀剂输送性能。采用延时成像和原位扫描开尔文探针（SKP）技术对F4_MIL-140A（Ce）的抑制效率进行了评估，以量化涂层的分层率。在PVB中加入越来越多的F4_MIL-140A（Ce）后，分层率逐渐降低，这是由于有机连接物释放到膜下电解质中。通过吸附苯并三唑、8-羟基喹啉和2-巯基苯并噻唑在Ce- mof表面生成一系列颜料，并将其分散在PVB中，研究了F4_MIL-140A（Ce）作为潜在抑制物质的储存和释放特性。所有抑制剂与F4_MIL-140A（Ce）的结合显著提高了性能，当储存2-巯基苯并噻唑时，在24 h的时间内没有观察到分层。F4_MIL-140A（Ce）色素中抑制剂的释放量通过UV-vis和SEM/EDX分析得到证实。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.