Accessible Unlicensed Requires Authentication Published by De Gruyter April 14, 2015

Microstructural and mechanical characterization of electric arc furnace (EAF) slag for use as abrasive grit material

Mikrostrukturelle und mechanische Charakterisierung von Schlacke aus elektrischem Lichtbogenofen (EFA) zur Verwendung als Abrasivmaterial
Şeyda Polat and Fulya Kahrıman
From the journal Materials Testing


Steel slag, a by-product of the steelmaking process, may turn into a useful material with many different applications if it is properly characterized. In the present study, samples of electric arc furnace slag received from a local steel producer have been analyzed in an attempt to solve the problem of waste disposal. The slag microstructure has been evaluated by light and electron microscopes and elemental compositions of the phases are determined by microanalysis. The quantities and hardness values of the phases present in the microstructure are measured by image analysis and micro-hardness tester, respectively. Particle size distribution, particle shape and bulk chemical composition are also determined and compared with an abrasive grit material used in shipyards for paint removal. Results show that present slag has a high potential to be used as blasting abrasive in place of the expensive grit material.


Stahlschlacke, ein Nebenprodukt der Stahlherstellung könnte in ein vielfach und unterschiedlich verwendbares Material gewandelt werden, wenn es ausreichend charakterisiert wird. In der diesem Beitrag zugrunde liegenden Studie wurden Schlackeproben aus einem elektrischen Lichtbogenofen, die von einem lokalen Stahlproduzenten bereitgestellt wurden, analysiert, um das Abfallproblem zu beseitigen. Die Mikrostruktur der Schlacke wurde mittels Licht- und Elektronenmikroskopie evaluiert. Die Mengenanteile und die Härtewerte der in der Mikrostruktur vorhandenen Phasen wurden mittels Bildanalyse und Mikrohärtemeßgerät gemessen. Die Verteilung der Partikelgröße, die Partikelform und die generelle chemische Zusammensetzung wurden ebenfalls bestimmt und mit einem Abrasivmaterial, wie es im Schiffbau zur Farbentfernung verwendet wird, verglichen. Die Ergebnisse zeigen, dass die untersuchte Schlacke großes Potential für die Verwendung als Strahlmittel anstelle von teuren Abrasivmaterialien besitzt.

§Correspondence Address, Assist. Prof. Dr. Şeyda Polat, Department of Metallurgical and Materials Engineering, Kocaeli University, Umuttepe Campus, 41380 Kocaeli Turkey,

Dr. Şeyda Polat graduated from Middle East Technical University, Department of Metallurgical Engineering, Ankara, Turkey. She received her MSc degree in 1980 and her PhD degree in 1987 in Materials Science and Engineering at the University of Illinois at Urbana-Champaign, USA. She worked as a research scientist at BRISA Bridgestone Sabancı Tire Manufacturing and Trading Inc., Kocaeli, Turkey (1988–2002), then became a faculty member at Kocaeli University. Her research interests include phase transformations, composite materials, tire technology and materials characterization.

Fulya Kahrıman graduated from Kocaeli University, Department of Metallurgical and Materials Engineering, Kocaeli, Turkey. She received her MSc degree from the same department in 2008. She is currently working as a research assistant at Kocaeli University, Department of Metallurgical and Materials Engineering, where she is a PhD student. Her research interests are metallography, materials characterization, fractography and aluminum alloys.


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Published Online: 2015-04-14
Published in Print: 2015-03-02

© 2015, Carl Hanser Verlag, München