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Selective Oxidation of Dual Phase Steel After Annealing at Different Dew Points by Vanessa de Freitas Cunha Lins; Laureanny Madeira; Jose Mario Carneiro Vilela; Margareth Spangler Andrade; Vicente Tadeu Lopes Buono; Juliana Porto Guimarães; Evandro de Azevedo Alvarenga is a Materials Science article available to read on EtoBox.

What is Selective Oxidation of Dual Phase Steel After Annealing at Different Dew Points about?

Hot galvanized steels have been extensively used in the automotive industry. Selective oxidation on the steel surface affects the wettability of zinc on steel and the grain orientation of inhibition layer (Fe-Al-Zn alloy) and reduces the iron diffusion to the zinc layer. The aim of this work is to identify and quantify selective oxidation on the surface of a dual phase steel, and an experimental steel with a lower content of manganese, annealed at different dew points. The techniques employed were atomic force microscopy, X-ray photoelectron spectroscopy, and glow discharge optical emission spectroscopy. External selective oxidation was observed for phosphorus on steel surface annealed at 0 • C dp, and for manganese, silicon, and aluminum at a lower dew point. The concentration of manganese was higher on the dual phase steel surface than on the surface of the experimental steel. The concentration of molybdenum on the surface of both steels increased as the depth increased.

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Author

Vanessa de Freitas Cunha Lins; Laureanny Madeira; Jose Mario Carneiro Vilela; Margareth Spangler Andrade; Vicente Tadeu Lopes Buono; Juliana Porto Guimarães; Evandro de Azevedo Alvarenga

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0169-4332)

Published

2011

Language

EN

Field

Materials Science (Physical Sciences)