2024-03-29T00:54:57Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/429832022-11-17T02:08:08Zhdl_2115_20071hdl_2115_183Fabrication of dense β-SiAlON by a combination of combustion synthesis (CS) and spark plasma sintering (SPS)Yi, XuemeiWatanabe, KotaroAkiyama, Tomohiroopen accessSilicides, variousReaction synthesisSinteringDiffraction (electron, neutron and X-ray)Electron microscopy, scanning436First, β-SiAlON (z = 1, 2, 3, and 4) powders were combustion-synthesized from well-mixed powders of Si, Al, and SiO2 under a low nitrogen pressure of 1 MPa using β-SiAlON (calculated z = 1.14) as the diluent. Then, the synthesized powders were subjected to spark-plasma-sintering (SPS) in vacuum for 12 min under a stress of 50 MPa and a temperature of 1600℃, without any sintering additives. X-ray diffraction (XRD) analysis revealed that a small amount of unreacted phase was found in the combustion-synthesized powders; however, pure β-SiAlON compacts were successfully obtained after SPS. The relative density of the products obtained by subjecting the combustion-synthesized powders to SPS was more than 99% of theoretical density.Elsevier2010-04engjournal articleAMhttp://hdl.handle.net/2115/42983https://doi.org/10.1016/j.intermet.2009.10.0040966-9795Intermetallics184536541https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/42983/1/Int18-4_536-541.pdfapplication/pdf632.13 KB2010-04