Published 2012 | Version v1
Journal article Metadata-only

Development of Nb2O5|Cu composite as AISI 1020 steel thermal spray coating for protection against corrosion by soil in buried structures

Creators

  • 1. Universidade Tecnologica Federal do Parana, Ponta Grossa, PR (Brazil). Dept. de Mecanica
  • 2. Instituto de Tecnologia para o Desenvolvimento, Curitiba, PR (Brazil). Dept. de Pesquisa em Engenharia Civil
  • 3. Universidade Federal do Parana, Curitiba, PR (Brazil). Dept. de Mecanica

Description

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. (author)

Availability note (English)

Available from http://www.scielo.br/pdf/qn/v35n8/v35n8a05.pdf

Additional details

Additional titles

Original title (Portuguese)
Desenvolvimento e uso do composito de Nb

Identifiers

URL
http://www.scielo.br/pdf/qn/v35n8/v35n8a05.pdf;

Publishing Information

Journal Title
Quimica Nova
Journal Volume
35
Journal Issue
8
Journal Page Range
p. 1517-1521
ISSN
0100-4042

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
43099670
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
COPPER; ELECTROCHEMICAL COATING; ELECTROCHEMICAL CORROSION; ELECTROCHEMISTRY; IRON; METAL INDUSTRY; NIOBIUM; NIOBIUM OXIDES; OXIDATION; PH VALUE; SUBSTRATES
Descriptors DEC
CHALCOGENIDES; CHEMICAL COATING; CHEMICAL REACTIONS; CHEMISTRY; CORROSION; DEPOSITION; ELEMENTS; INDUSTRY; METALS; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; REFRACTORY METAL COMPOUNDS; REFRACTORY METALS; SURFACE COATING; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS