Published 1988 | Version v1
Miscellaneous Metadata-only

Effect of niobium on the corrosion of austenitic stainless steels

Creators

  • 1. Instituto de Pesquisas Energeticas e Nucleares, Sao Paulo, SP (Brazil). Dept. de Metalurgia Nuclear
  • 2. Sao Paulo Univ., SP (Brazil). Escola Politecnica

Description

The niobium influence on the grouth of passivating oxide film on austenitics stainless steels was investigated with potentiodynamic methods in 2N H2SO4 as electrolyte at 25 ± 10C. The increase of niobium content content in austenitic stainless steel affects the film characteristics the film characteristics formed changing markedey the critical passivating current density (ip1) and maintaing almost constant the passivating current density (ipas. The critical passivating current density has been analysed through its dependence on the sweep velocity. (author)

Availability note (English)

Available from the Library of Comissao Nacional de Energia Nuclear, RJ, Brazil.

Abstract (Portuguese)

A influencia do niobio sobre a formacao de filmes oxidos passivantes em acos inoxidaveis austeniticos foi estudada potenciodinamicamente em meio de H2SO42N e na temperatura de 25 ± 10C. O aumento da concentracao de niobio no aco inoxidavel austenitico afeta as caracteristicas do filme formado, modificando acentuadamente a densidade de corrente critica de passivacao (ip1) e mantendo praticamente constante a densidade de corrente de passivacao (i Sub(pas)). A densidade de corrente critica de passivacao foi analisada a partir de sua depencencia com a velocidade de varredura. (autor)

Additional details

Additional titles

Original title (Portuguese)
Efeito do niobio sobre a corrosao de acos inoxidaveis austeniticos

Publishing Information

Imprint Pagination
3 p.

Conference

Title
8. Brazilian Congress on Engineering and Materials Science.
Dates
12-15 Dec 1988.
Place
Campinas, SP (Brazil).

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
20065551
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
AUSTENITIC STEELS; CORROSION PROTECTION; CRITICAL CURRENT; INTERGRANULAR CORROSION; MEDIUM TEMPERATURE; NIOBIUM; PASSIVATION; QUANTITY RATIO
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CHEMICAL REACTIONS; CORROSION; CURRENTS; ELECTRIC CURRENTS; ELEMENTS; IRON ALLOYS; IRON BASE ALLOYS; METALS; STEELS; TRANSITION ELEMENTS