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The load dependence of the micro-hardness of the blast furnace slag

jozef Petrík Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, 042 00, Slovakia
Peter Blaško Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, 042 00, Slovakia
Vojtech Mikloš Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, 042 00, Slovakia
Alena Pribulová Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, 042 00, Slovakia
Peter Futaš Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, 042 00, Slovakia
Andrea Vasilňaková Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, 042 00, Slovakia
Marek Šolc Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, 042 00, Slovakia

DOI: https://doi.org/10.30544/512

Keywords: grinding; iron slag; ISE; micro-hardness.

Abstract

Deposits of old blast-furnace slag are an environmental problem. The slag’s hardness is an important for calculation of the energy cost for crushing and grinding process. Due to its porosity, measurement of the (macro) hardness is. To adapt the dimensions of the indentations to the character of the slag, it is necessary to apply loads in the range of micro-hardness. The purpose of this paper is to evaluate the influence of load on the micro-hardness - the Indentation Size Effect (ISE) using Meyer’s, Hays-Kendall and PSR methods. ISE for all samples is “normal”, the slag’s basicity affects micro-hardness and ISE.

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Published

2020-09-30

Issue

Vol 26 No 3 (2020)

Section

Research

Copyright (c) 2020 jozef Petrík, Peter Blaško, Vojtech Mikloš, Alena Pribulová, Peter Futaš, Andrea Vasilňaková, Marek Šolc

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