The Al-AlN bonded corundum based refractories was synthesized with the starting materials of fused alu-mina and metallic aluminium in nitrogen atmosphere through in-situ reaction. The study indicated that with the addition of 14% metallic aluminium (13% of Al powder and 1% of Al fiber) , the material nitridized at 1 100 ℃ for 3 h has excellent physical properties. It is found that a massive quantity of AlN in the forms of both whiskers" and hexagon pellet particles is formed, and a large quantity of Al remained in the matrix. This multiple bonding system resulted in the excellent me-chanical properties of the material. It is also found that the hydration tendency of the prepared material is inhib-ited, and the material exhibited excellent thermal shock resistance. The nature of protective oxidation of the bonding system is characterized. Thus, this material may become a new candidate of carbon-free sliding plate material for continuous casting.