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The Effects Of An Applied Voltage On The Corrosion Characteristics Of Dense Mgo, Brian Joseph Monaghan, Sharon Nightingale, Qiang Dong, Michael Funcik
The Effects Of An Applied Voltage On The Corrosion Characteristics Of Dense Mgo, Brian Joseph Monaghan, Sharon Nightingale, Qiang Dong, Michael Funcik
Faculty of Engineering - Papers (Archive)
In a recent investigation Mills and Riaz [1] showed that industrial oxide refractory corrosion by liquid oxides could be changed by the application of a small voltage across the liquid oxide-refractory interface. They ex-plained their result in terms of penetration of the refractory pores with liquid oxide. Their analysis of the corrosion effect was to some degree limited by the use of an industrial refractory material in the study. Fur-ther, it was not clear whether their findings were limited to solely industrial refractories or had wider ranging application to more dense ceramic type solid oxide systems. In this study, a …
Refractory Corrosion By Slag Under An Applied Voltage, Brian J. Monaghan, Sharon Nightingale, Q Dong, Michael Funcik
Refractory Corrosion By Slag Under An Applied Voltage, Brian J. Monaghan, Sharon Nightingale, Q Dong, Michael Funcik
Faculty of Engineering - Papers (Archive)
The effect of an applied voltage on the dissolution rate of MgO refractory in two steelmaking type slags has been investigated. It was found that the MgO corrosion in a CaO-SiO2-Al2O3 based slag proved insensitive to an applied voltage over the voltage range –0.5 to 0.3V. The corrosion rate of the dense MgO in a CaO-SiO2-Fe2O3-FeO-MgO slag showed a maximum corrosion rate at –0.45V. This effect has been explained by considering the consequences of an applied voltage on the rate of Marangoni flow at the slag-refractory-gas interface and in turn, the flow effect on the rate of the mass transfer …
The Effect Of An Applied Electrical Potential On Refractory Corrosion By Slag, Brian J. Monaghan, Sharon Nightingale, Q Dong
The Effect Of An Applied Electrical Potential On Refractory Corrosion By Slag, Brian J. Monaghan, Sharon Nightingale, Q Dong
Faculty of Engineering - Papers (Archive)
An investigation has been carried out to assess the effects of an applied voltage on the dissolution rate of MgO refractory in a steelmaking like slag. In this study corrosion results obtained from dip tests using a dense direct bonded MgO refractory in a CaO-SiO2-Fe2O3-FeO-MgO slag are presented. These results demonstrate that the application of a voltage across a dense MgO refractory-slag interface can change the rate of refractory dissolution. For the slag composition used and the voltage range tested, it was found that a maximum corrosion rate was obtained at a voltage setting of –0.45V. The results of this …