Udhaya Kumar Aruchamy, Emilia Merino, Alicia Durán, Helena Pálková, Dušan Galusek, Yolanda Castro
{"title":"AA2024-T3 铝合金上的 GPTMS 改性聚有机硅氮烷功能化二氧化硅涂层的湿度诱导固化和抗腐蚀性能","authors":"Udhaya Kumar Aruchamy, Emilia Merino, Alicia Durán, Helena Pálková, Dušan Galusek, Yolanda Castro","doi":"10.1007/s10971-024-06473-y","DOIUrl":null,"url":null,"abstract":"<div><p>Relative humidity (RH) is one of the key parameters that significantly affect the curing kinetics and final properties of polysilazane-based coatings. Thus, the paper discusses the effect of relative humidity during the curing process and the anti-corrosion properties of (3-glycidyloxypropyl) trimethoxysilane (GPTMS)-modified polyorganosilazane (OPSZ) functionalized silica coatings on AA2024-T3. Modified polyorganosilazane sol was prepared and then deposited on AA2024-T3 substrates varying the curing conditions. After the deposition, the coated aluminum substrates were exposed to different RH levels; 15%, 40% and 80%, and then cured at 120 °C for 2 h. Transparent and crack-free GPTMS-modified polyorganosilazane coatings with a thickness of around 15–17 μm were obtained. The exposure to the relative humidity increased the crosslinking and hydrolysis-condensation reactions of the OPSZ and GPTMS molecules, showing more Si-O-Si bonds. The incorporation of GPTMS affected the crosslinking structure, enhancing the corrosion protection properties of the coating. GPTMS-modified polyorganosilazane coatings cured at 40%RH had the best anti-corrosive properties after immersion in 3.5 wt% NaCl solution. The impedance modulus of ∼10<sup>9</sup> Ω.cm<sup>2</sup> at a low frequency was obtained, which was five orders of magnitude higher than that for the AA2024-T3 alloy.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"112 1","pages":"140 - 151"},"PeriodicalIF":2.3000,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10971-024-06473-y.pdf","citationCount":"0","resultStr":"{\"title\":\"Humidity-induced curing and anti-corrosion properties of GPTMS-modified polyorganosilazane functionalized silica coating on AA2024-T3 aluminum alloy\",\"authors\":\"Udhaya Kumar Aruchamy, Emilia Merino, Alicia Durán, Helena Pálková, Dušan Galusek, Yolanda Castro\",\"doi\":\"10.1007/s10971-024-06473-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Relative humidity (RH) is one of the key parameters that significantly affect the curing kinetics and final properties of polysilazane-based coatings. Thus, the paper discusses the effect of relative humidity during the curing process and the anti-corrosion properties of (3-glycidyloxypropyl) trimethoxysilane (GPTMS)-modified polyorganosilazane (OPSZ) functionalized silica coatings on AA2024-T3. Modified polyorganosilazane sol was prepared and then deposited on AA2024-T3 substrates varying the curing conditions. After the deposition, the coated aluminum substrates were exposed to different RH levels; 15%, 40% and 80%, and then cured at 120 °C for 2 h. Transparent and crack-free GPTMS-modified polyorganosilazane coatings with a thickness of around 15–17 μm were obtained. The exposure to the relative humidity increased the crosslinking and hydrolysis-condensation reactions of the OPSZ and GPTMS molecules, showing more Si-O-Si bonds. The incorporation of GPTMS affected the crosslinking structure, enhancing the corrosion protection properties of the coating. GPTMS-modified polyorganosilazane coatings cured at 40%RH had the best anti-corrosive properties after immersion in 3.5 wt% NaCl solution. The impedance modulus of ∼10<sup>9</sup> Ω.cm<sup>2</sup> at a low frequency was obtained, which was five orders of magnitude higher than that for the AA2024-T3 alloy.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":664,\"journal\":{\"name\":\"Journal of Sol-Gel Science and Technology\",\"volume\":\"112 1\",\"pages\":\"140 - 151\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-08-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s10971-024-06473-y.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Sol-Gel Science and Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10971-024-06473-y\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, CERAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10971-024-06473-y","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
Humidity-induced curing and anti-corrosion properties of GPTMS-modified polyorganosilazane functionalized silica coating on AA2024-T3 aluminum alloy
Relative humidity (RH) is one of the key parameters that significantly affect the curing kinetics and final properties of polysilazane-based coatings. Thus, the paper discusses the effect of relative humidity during the curing process and the anti-corrosion properties of (3-glycidyloxypropyl) trimethoxysilane (GPTMS)-modified polyorganosilazane (OPSZ) functionalized silica coatings on AA2024-T3. Modified polyorganosilazane sol was prepared and then deposited on AA2024-T3 substrates varying the curing conditions. After the deposition, the coated aluminum substrates were exposed to different RH levels; 15%, 40% and 80%, and then cured at 120 °C for 2 h. Transparent and crack-free GPTMS-modified polyorganosilazane coatings with a thickness of around 15–17 μm were obtained. The exposure to the relative humidity increased the crosslinking and hydrolysis-condensation reactions of the OPSZ and GPTMS molecules, showing more Si-O-Si bonds. The incorporation of GPTMS affected the crosslinking structure, enhancing the corrosion protection properties of the coating. GPTMS-modified polyorganosilazane coatings cured at 40%RH had the best anti-corrosive properties after immersion in 3.5 wt% NaCl solution. The impedance modulus of ∼109 Ω.cm2 at a low frequency was obtained, which was five orders of magnitude higher than that for the AA2024-T3 alloy.
期刊介绍：
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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