Abstract
The effects of Si3N4 addition on the room temperature physical properties and hot modulus of rupture(HMOR) of unfired A12O3-C slide plate were investigated by using tabular corundum and reactive alumina as starting materials, aluminium powder and silicon powder as antioxidation agents, phenolic resin as binder. The phase composition and microstructure was characterized by X-Ray diffraction (XRD), scanning electron microscope (SEM), and EDAX. The results showed that with addition of Si3N4, the compactness of A12O3-C slide plate decreased, the room temperature strength deduced. Due to formed cylindrical sialon as a binder phase, the hot modulus of rupture increased.
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