A study on oxide scale formation of low carbon steel using thermo gravimetric technique

• Published in: Ironmaking & steelmaking Vol. 35; no. 8; pp. 621 - 632
• Main Authors: Wikström, P., Blasiak, W., Du, S. C.
• Format: Journal Article
• Language: English
• Published: London, England Taylor & Francis 01.11.2008; SAGE Publications; Taylor & Francis Ltd
• Subjects: Carbon dioxide; Chemical engineering; Electron microscopes; Experiments; Gases; Heat; Kemiteknik; Metallurgical process and manufacturing engineering; Metallurgical process engineering; Metallurgisk process- och produktionsteknik; Metallurgisk processteknik; OXIDATION; REHEATING; SCALE FORMATION; Scanning electron microscopy; Steel; Steel products; Studies; TECHNOLOGY; TEKNIKVETENSKAP; Temperature; Temperature effects; OXIDATION; REHEATING; SCALE FORMATION; Superconducting wire; Rate constants; Scanning; Mass gains; Scanning electron microscopes; Steel samples; Reheating; Effect of oxygens; Microscopic examination; Oxide scale formations; Chemical oxygen demand; Scale (deposits); Scale formation; Oxidation; Gravimetric techniques; Optical microscopes; Microscopes; Scanning electron microscopy; Steel grades; Oxygen; Parabolic rate constants; Furnaces; Oxide scales; Low carbon steels; Experimental investigations; Reheating furnaces; Carbon steel; Small samples
• ISSN: 0301-9233; 1743-2812
• DOI: 10.1179/174328108X369116

The aim of this paper was to investigate the effect of oxygen content and temperature on the formation of oxide scales of four different steel grades. Thermo gravimetric experiments were carried out. Small samples of low carbon steels with different compositions were exposed to a gas containing a certain amount of oxygen and at temperatures in the range of 1373-1623 K. The mass gain of the steel sample was recorded. On the basis of the oxidation curves, the parabolic rate constants were reported. Post-experimental investigation of the samples was performed using scanning electron microscope and light optical microscope techniques. The results were compared with the scanning electron microscopy graphs of the steel samples taken from the real industrial reheating furnace.