In-situ reactive synthesis of full dense Si2N2O by incorporating of Amourphous nanosized Si3N4;effect of MgO and Y2O3

In-situ reactive synthesis of full dense Si2N2O by incorporating of Amourphous nanosized Si3N4;effect of MgO and Y2O3

Blog Article

Si2N2O is considered as a new great potential structural/functional candidate in place of Si3N4.The amorphous Si3N4 nanopowder was incorporated into silica sol by adding of MgO and Y2O3 as sintering aid.Synthesized powders were heated by spark 5 Piece Counter Dining Set plasma sintering at a heating rate of 100 oC/min yielded fully dense compacts at 1550 and 1750 oC for 40 min.The phase formation of samples was characterized by X-ray diffraction technique and Raman spectroscopy.The microstructure was studied by field emission scanning electron microscopy equipped by energy dispersive SHEA BUTTER OLIVE OIL X-ray spectroscopy.

Optical emissivity of Si2N2O phase was investigated by photoluminescence spectroscopy.The obtained results confirm that employing MgO in compare to the Y2O3 could promote the fabrication of a fully dense pure Si2N2O specimen by SPS at much shorter time than conventional sintering.Si2N2O have a strong, stable blue emission band centered at 455 nm with excitation wavelengths of 240 nm.