Desenvolvimento e uso do compósito de Nb2O5|Cu como revestimento aplicado por aspersão térmica sobre o aço AISI 1020 para proteção contra a corrosão pelo solo em estruturas enterradas

Química Nova

Oscar Regis Junior¹  José Maurílio Da Silva²  Kleber Franke Portella²  Ramon Sigifredo Cortes Paredes² 

[1] ,Universidade Tecnológica Federal do Paraná Departamento de Mecânica Ponta Grossa PR ,Brasil

关键词: soil corrosion;    surface coating;    Nb2O5;   

DOI  :  10.1590/S0100-40422012000800005

来源: SciELO

【 摘 要 】

An Nb2O|Cu corrosion-resistant coating was developed and applied onto AISI 1020 steel substrate by Powder Flame Spray. A galvanostatic electrochemical technique was employed, with and without ohmic drop, in four different soils (two corrosively aggressive and two less aggressive). Behavior of coatings in different soils was compared using a cathodic hydrogen reduction reaction (equilibrium potential, overvoltage and exchange current density) focusing on the effect of ohmic drop. Results allow recommendation of Nb2O5|Cu composite for use in buried structure protection.

【 授权许可】

CC BY-NC   
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