resumo
Over the past years, the use of layered materials such as clay minerals, layered double hydroxides, and layered hydroxide salts, as nanocontainers of corrosion inhibitors has grown, and these materials have proved to be very advantageous to improve the corrosion protection of metallic surfaces. The layered materials are especially advantageous for this application due to their capacity of not only releasing corrosion inhibitors on-demand to protect the metal but also capturing ionic aggressive species from the medium. The diversity of corrosion inhibitors species that can be intercalated in the interlayer space of these materials and the possibility to synthesize different layered materials (composition, structure, and morphology), using different methods, provide a high versatility to produce efficient protective systems, which are elucidated and discussed in this review. Moreover, a section on future perspectives is presented, indicating promising and still underexplored possibilities for future development trends in using layered materials for corrosion protection applications.
palavras-chave
DOUBLE HYDROXIDE LDH; ANION-EXCHANGE; CRYSTAL-STRUCTURE; FILIFORM CORROSION; CONVERSION FILMS; CATION-EXCHANGE; SMART COATINGS; CLAY-MINERALS; MILD-STEEL; MG ALLOY
categoria
Chemistry; Materials Science; Mineralogy
autores
Leal, DA; Kuznetsova, A; Silva, GM; Tedim, J; Wypych, F; Marino, CEB
nossos autores
Alena Kuznetsova
Bolseiro de investigação
João Tedim
Professor associadoProjectos
Collaboratory for Emerging Technologies, CoLab (EMERGING TECHNOLOGIES)
agradecimentos
This study was financed in part by the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brazil (CAPES) -Finance Code 001, and Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) . Claudia Eliana Bruno Marino and Fernando Wypych are thankful for the CNPq productivity scholarships (C.E.B.M.: 303126/2019-1; F.W.: 300988/2019-2) . Debora Abrantes Leal thanks CAPES for the Ph.D. scholarship (CAPES/PrInt no. 88887.468259/2019-00) . Also, this work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement.