Oxidation of the added graphite and the bonding carbon is an imortant degradation mode of doloma-carbon refractories in service,In this work,the behavior and effects of various boron bearing materials(CaB6,ZrB2,Bc and...Oxidation of the added graphite and the bonding carbon is an imortant degradation mode of doloma-carbon refractories in service,In this work,the behavior and effects of various boron bearing materials(CaB6,ZrB2,Bc and colemanite)as an-tioxidants have been investigated and compared to the effect of Al-Mg alloy,For CaO-MgO-C mate-rials,the effect of boron bearingadditives is better than Al-Mg alloy,The borate melt formed at high temperature would retard or prevent carbon oxidation,thus contributing to improved oxidation resistance,Preliminary investigations on the effect of boron bearing additives and Al-Mg alloy on corrosion resistance of doloma-carbon materials have indicated that simultaneous addition of the two types of additives would lead to pronounced improvement of slag corrosion resistance.展开更多
The parameters influencing the process of carbon oxidation in magnesia-carbon refracto-ries are reviewed.A typology of their oxidation resistance measurements is then presented;four different method are discussed in d...The parameters influencing the process of carbon oxidation in magnesia-carbon refracto-ries are reviewed.A typology of their oxidation resistance measurements is then presented;four different method are discussed in details.No agreement has been reached yet on a standard-ized test method.So far,oxidation resistance describes a process more than a property.展开更多
文摘Oxidation of the added graphite and the bonding carbon is an imortant degradation mode of doloma-carbon refractories in service,In this work,the behavior and effects of various boron bearing materials(CaB6,ZrB2,Bc and colemanite)as an-tioxidants have been investigated and compared to the effect of Al-Mg alloy,For CaO-MgO-C mate-rials,the effect of boron bearingadditives is better than Al-Mg alloy,The borate melt formed at high temperature would retard or prevent carbon oxidation,thus contributing to improved oxidation resistance,Preliminary investigations on the effect of boron bearing additives and Al-Mg alloy on corrosion resistance of doloma-carbon materials have indicated that simultaneous addition of the two types of additives would lead to pronounced improvement of slag corrosion resistance.
文摘The parameters influencing the process of carbon oxidation in magnesia-carbon refracto-ries are reviewed.A typology of their oxidation resistance measurements is then presented;four different method are discussed in details.No agreement has been reached yet on a standard-ized test method.So far,oxidation resistance describes a process more than a property.
