镨修饰的氧化石墨烯作为AZ31镁合金在酸性介质中的缓蚀剂。
Praseodymium-decorated graphene oxide as a corrosion inhibitor in acidic media for the magnesium AZ31 alloy.
作者信息
Palaniappan N, Cole Ivan S, Caballero-Briones F, K Balasubaramanian, Lal C
机构信息
Central University of Gujarat 382030 India
Advance Manufacturing and Fabrication Research and Innovation, RMIT University Melbourne Vic 3100 Australia.
出版信息
RSC Adv. 2018 Oct 9;8(60):34275-34286. doi: 10.1039/c8ra05118f. eCollection 2018 Oct 4.
In the present work, Pr-decorated graphene oxide was synthesized and tested as a corrosion barrier layer in acidic media for the magnesium AZ31 alloy. The morphology, composition and structure of Pr-decorated graphene oxide sheets were characterized HRTEM, FESEM, Raman, XRD, DLS, UV and FTIR studies. The corrosion inhibition efficiency on the alloy surface was monitored microstructural and electrochemical methods. The results indicate that Pr-decorated graphene oxide provides improved protection for the Mg AZ31 alloy compared to conventional epoxy coatings. The proposed mechanism arises from a combination of the barrier activities of the composite, GO + Pr, and the epoxy coating on the Mg alloy in acidic media.
在本工作中，合成了镨修饰的氧化石墨烯，并将其作为镁 AZ31 合金在酸性介质中的腐蚀阻挡层进行测试。通过高分辨透射电子显微镜（HRTEM）、场发射扫描电子显微镜（FESEM）、拉曼光谱、X 射线衍射（XRD）、动态光散射（DLS）、紫外光谱和傅里叶变换红外光谱（FTIR）研究对镨修饰的氧化石墨烯片的形貌、组成和结构进行了表征。采用微观结构和电化学方法监测合金表面的缓蚀效率。结果表明，与传统环氧涂层相比，镨修饰的氧化石墨烯为镁 AZ31 合金提供了更好的保护。所提出的机制源于复合材料 GO + Pr 的阻挡活性以及镁合金上环氧涂层在酸性介质中的协同作用。
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