The toughness and thermal shock resistance of high alumina bricks are also one of the properties of high alumina refractory brick products, and they are complementary to each other. Methods to improve the toughness of high alumina bricks: Take certain measures to form a certain microstructure of high alumina bricks, generate energy dissipation mechanisms, hinder crack propagation, and improve the toughness of high alumina bricks. Below, Henan refractory material manufacturers will briefly analyze the toughening problem of high alumina bricks.
There are structural defects, inherent pores, and cracks in high alumina bricks. Under external forces, cracks are prone to initiate and lack energy dissipation mechanisms, making them prone to brittle fracture. The toughening approach for high alumina bricks can control the microstructure, reduce the size of cracks, and control the number and distribution of impurities and pores. It is also possible to prevent crack propagation by adding energy dissipation mechanisms and setting obstacles. Phase transformation toughening, microcrack toughening, etc. can all generate energy dissipation mechanisms, disperse second phase particles, and cause obstacles to crack propagation, resulting in crack deflection toughening.
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