论文信息 - Synthesis of (Ca,Mg)-α-sialon from slag by self-propagating high-temperature synthesis

Synthesis of (Ca,Mg)-α-sialon from slag by self-propagating high-temperature synthesis

The synthesis of (Ca,Mg)-α-sialon powders using slag as a starting material by self-propagating high-temperature synthesis (SHS) is reported for the first time. The only crystalline phase detected in the synthesized products was α-sialon. The characters of the synthesized powders were observed and compared with that of conventionally hot-pressed materials. More metal cations were absorbed into the α-sialon structure of the SHS synthesized powders. Fully densified sialon ceramics can be obtained using the SHS powders by hot-pressing. The hardness and fracture toughness of the hot-pressed α-sialon ceramics reached 16 GPa and 5.1 MPa m−1/2 respectively.

[1] J. Ferreira,et al. Combustion synthesis of AlNSiC solid solution particles , 2000 .

[2] P. L. Wang,et al. Effect of dual elements (Ca, Mg) and (Ca, La) on cell dimensions of multi-cation α-sialons , 2000 .

[3] D. Yan,et al. Effect of amount and atomic ratio of dual modifiers Ca and Mg on phase formation and mechanical properties of Ca,Mg-α-Sialons , 2000 .

[4] Jie Zheng,et al. Carbothermal Preparation of β-SiAlON Powder at Elevated Nitrogen Pressures , 1999 .

[5] P. L. Wang,et al. Formation behavior of multi-cation α-sialons containing calcium and magnesium , 1999 .

[6] M. Öveçoğlu,et al. Microstructural characterization and physical properties of a slag-based glass-ceramic crystallized at 950 and 1100 °c , 1998 .

[7] H. Yi,et al. Self-propagating high-temperature (combustion) synthesis (SHS) of powder-compacted materials , 1990 .