An investigation of the pressureless sintering of Si3N4 with MgO-CeO2 reveals that MgO-CeO2 is a much more effective sintering aid for silicon nitride than either MgO or CeO2. The amount of MgO-CeO2 and MgO/CeO, weigh...An investigation of the pressureless sintering of Si3N4 with MgO-CeO2 reveals that MgO-CeO2 is a much more effective sintering aid for silicon nitride than either MgO or CeO2. The amount of MgO-CeO2 and MgO/CeO, weight ratio has a strong influence on the densification be-haviour and mechanical properties of the sintered materials. The silicon nitride pressureless sintered with MgO-CeO2 re-tains a relative density of 98. 5% , a bending strength of 950 MPa. The Si-Mg-Ce-O-N system is of great value for appli-cation and theoretical study.展开更多
文摘An investigation of the pressureless sintering of Si3N4 with MgO-CeO2 reveals that MgO-CeO2 is a much more effective sintering aid for silicon nitride than either MgO or CeO2. The amount of MgO-CeO2 and MgO/CeO, weight ratio has a strong influence on the densification be-haviour and mechanical properties of the sintered materials. The silicon nitride pressureless sintered with MgO-CeO2 re-tains a relative density of 98. 5% , a bending strength of 950 MPa. The Si-Mg-Ce-O-N system is of great value for appli-cation and theoretical study.
