Investigation of electrochemical deposition of Fe-P alloys on polycrystalline platinum from an alkaline bath

Autor(es)

Brito, Matheus M. ^[1] ; Zacarin, Maria G. ^[1] ; Arruda, Raul A. ^[1] ; Barbano, Elton P. ^[1] ; Carlos, Ivani A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Chem, CP 676, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Thin Solid Films; v. 699, APR 1 2020.
• Citações Web of Science: 0

Resumo

The electrodeposition process of the Fe-P alloy on platinum substrate was investigated at room temperature using a moderately alkaline bath containing FeCl3, NaH2PO2 and Na(3)TA (trisodium nitrilotriacetate), which stabilized the Fe(III) ions in the bath at pH 8.0. Cyclic voltammetry was used to analyze the electrochemical behavior of the Fe(III)-NTA species in the electrodeposition bath, and two cathodic and two anodic processes were found. Hydrodynamic studies suggested that the reduction processes are mainly controlled by mass transport. Energy dispersive X-ray spectrometry analysis showed that Fe and P co-deposited. Scanning electron microscopy micrographs revealed electrodeposits without cracks or dendritic crystallites. The Fe and Fe3P phases could be observed by X-ray diffraction in the Fe-P electrodeposits produced from alkaline NTA bath. Confocal laser scanning microscopy showed that roughness of Fe-P electrodeposits, produced with deposition charge density of 40.0 degrees C cm(-2), decreased from 0.046 mu m to 0.024 mu m, depending on the deposition potential. (AU)

• Processo FAPESP: 17/18389-2 - Desenvolvimento de banhos contendo ácido aspártico para eletrodeposição de ligas Ni-Cu e Ni-Cu-P e investigação do processo de eletrodeposição destas ligas: caracterização dos banhos e dos eletrodepósitos
• Beneficiário: Matheus Macedo de Brito
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 16/00927-5 - Eletrodeposição de Fe-P sobre cobre a partir de banhos levemente alcalinos na presença de nitrilotriacetato de sódio
• Beneficiário: Matheus Macedo de Brito
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica