TY - JOUR

T1 - Phase formation in MgO-C refractories with different antioxidants

AU - Atzenhofer, Christina

AU - Harmuth, Harald

N1 - Publisher Copyright: © 2021

PY - 2021/8/27

Y1 - 2021/8/27

N2 - The application of Al or Si as antioxidants in MgO-C refractories leads to the in situ formation of new phases. Due to uncertainties regarding phase formation in some references four different test series were heat treated from 800 to 1600 °C under reducing conditions in 200 °C steps. The antioxidant systems investigated were pure Al, Al and Si in two different ratios and SiC. The addition of SiC did not lead to the formation of new phases but in case of Al and Si addition carbides, nitrides, oxycarbonitrides and oxynitrides were formed. The reaction series, its reason and its relation to equilibrium phase composition have been revealed.

AB - The application of Al or Si as antioxidants in MgO-C refractories leads to the in situ formation of new phases. Due to uncertainties regarding phase formation in some references four different test series were heat treated from 800 to 1600 °C under reducing conditions in 200 °C steps. The antioxidant systems investigated were pure Al, Al and Si in two different ratios and SiC. The addition of SiC did not lead to the formation of new phases but in case of Al and Si addition carbides, nitrides, oxycarbonitrides and oxynitrides were formed. The reaction series, its reason and its relation to equilibrium phase composition have been revealed.

UR - http://www.scopus.com/inward/record.url?scp=85111064399&partnerID=8YFLogxK

U2 - 10.1016/j.jeurceramsoc.2021.07.023

DO - 10.1016/j.jeurceramsoc.2021.07.023

M3 - Article

VL - 41.2021

SP - 7330

EP - 7338

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 14

ER -