Effect of Nitrogen on Blister Growth Process during High Temperature Oxidation of Steel

Blistering occurs when oxide scale swells during oxidation at high temperatures. Blistered scale causes surface defects when rolled. The present study investigated the effect of nitrogen on blister growth when steel is oxidized at high temperatures, and drew the following conclusions. Atmospheric co...

Full description

Saved in:
Bibliographic Details
Published in:ISIJ International 2012, Vol.52(9), pp.1644-1648
Main Authors: Kondo, Yasumitsu, Tanei, Hiroshi, Ushioda, Kohsaku, Maeda, Muneyuki, Abe, Yoshio
Format: Article
Language:English
Subjects:
Applied sciences
blister
Corrosion
Corrosion environments
Exact sciences and technology
gas generation
growth
Heat treatment
Metals. Metallurgy
nitriding
nitrogen
oxidation
Production techniques
scale
Thermochemical treatment and diffusion treatment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Blistering occurs when oxide scale swells during oxidation at high temperatures. Blistered scale causes surface defects when rolled. The present study investigated the effect of nitrogen on blister growth when steel is oxidized at high temperatures, and drew the following conclusions. Atmospheric conditions before oxidation affect blister growth. Blisters nucleate but do not grow, when a steel sample is held in Ar gas or in vacuum before oxidation. Blisters inflate when a steel sample is held in N2 gas before oxidation. The gas inside the grown blisters is mainly N2 gas. The steel surface is nitrided in N2 gas at high temperatures. It is deduced that the steel surface is nitrided before oxidation, and the nitrogen component causes blister growth upon its release as N2 gas at the scale/steel interface.
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.52.1644