112760-32-4Relevant academic research and scientific papers
A new, low-temperature polymorph of O′-SiAlON
Bowden, Mark E.,Barris, Glen C.,Brown, Ian W. M.,Jefferson, David A.
, p. 2188 - 2190 (1998)
A new phase in the Si-Al-O-N system has been identified, following syntheses based on the nitridation of silicon/clay mixtures at low temperatures (a combination of diffraction and high-resolution imaging techniques, and this new phase possessed the same sheet structure as O′-SiAlON (Si2-xAlxO1+xN2-x) but with a different stacking arrangement. It is considered to be a low-temperature polymorph of O′-SiAlON and transforms to conventional O′-SiAlON at temperatures greater than ～1350°C.
α-SiAlON ceramics obtained by slip casting and pressureless sintering
Xu, Xin,Oliveira, Marta I.L.L.,Ferreira, Jose M.F.
, p. 366 - 368 (2003)
Dense α-SiAlON ceramics were obtained by pressureless sintering of green compacts prepared using slip casting. The rheological properties of the reaction SiAlON suspension were optimized to achieve a high degree of dispersion with a high solids volume fraction, which resulted in homogeneous and relatively dense green bodies with high sintering ability, which could be densified by pressureless sintering at 1750°C for 2 h. The sintered samples revealed a high degree of uniformity and almost fully dense microstructures that consisted of many small, elongated grains homogeneously dispersed in the fracture surfaces, which had properties comparable with those of other SiAlONs obtained using hot pressing.
