Titanya ve karbon katkısının yüksek alüminalı tuğlalarının mekanik termal ve mikroyapısal özelliklerine etkisinin incelenmesi

In industrial type aluminium melting furnaces operated with molten aluminium alloys are used high alumina refractories. One of the biggest failures of high alumina refractory materials during melting is corundum (alumina) formation. This defect in refractories leads to reduction in efficiency of melting process by furnace's volume decrease, thereby increasing in cost. In this study, different types of additives were added to high alumina refractory samples in order to improve the performance of refractory material. To restrain this defect, containing graphite and titania additive refractory bricks were produced. Obtained refractory bricks are investigated by means of mechanical, physical, thermal and chemical properties with the test methods of cold and hot crushing strength, bulk density, apparent porosity, thermal shock and corrosion test. Microstructure and phase development of the samples were analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD) analyses, respectively.