The Properties of Si3N4 Material and Its Application in Refractory Materials |
Properties of Si3N4 Material: Si3N4 material is the molecular form of silicon nitride. Of this, 60.06% of it is Si and 39.94% are N. Si and N are bonded through a strong covalent bonds (the ionic link is only 30%), so Si3N4's high hardness (Mohs toughness 9), high melting temperature and stable structure make it a Si3N4. Silicon dioxide has a low melting point and can be sublimated at 1900°C under normal pressure with a specific heat value of 711.8J/kg*degC. The microhardnesses for a phase