SiAlON having magnetic properties and the manufacturing method thereof

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PURPOSE : A method for manufacturing the sialon having magnetism, and the sialon having magnetism prepared by the method are provided to expand the application area of sialon as an electromagnetic material by improving the magnetic property.CONSTITUTION : A method for manufacturing the sialon having magnetism comprises the steps of mixing silicon nitride, aluminum nitride, alumina and rare earth oxides; and sintering the mixture under the nitrogen atmosphere, to prepare the sialon having a magnetization saturation of 0.15- 0.24 emu/g. The sintering is carried out at a temperature of 1700~1900°C. The mixture comprises further iron oxide, and the magnetization saturation increases proportionally to the amount of iron.COPYRIGHT KIPO 2010