QI Yujie,GE Shuai,WANG Liang,et al.Effects of multiple additives on the microstructure and properties of sintered AlN ceramics[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2025,64(06):95-101.
QI Yujie,GE Shuai,WANG Liang,et al.Effects of multiple additives on the microstructure and properties of sintered AlN ceramics[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2025,64(06):95-101. DOI: 10.13471/j.cnki.acta.snus.ZR202500141.
Effects of multiple additives on the microstructure and properties of sintered AlN ceramics
ternary sintering additive was used to conduct low-temperature sintering experiments on AlN ceramics.The effects of Y₂O₃ and Sm
2
O
3
additive amounts on the microstructure, thermodynamic properties of AlN ceramics were studied, when the amount of aluminum is fixed.The experiments indicate that adding the ternary sintering additive allows AlN ceramics to achieve densification at 1 750 ℃,which is reduced by 150 ℃ compared to AlN ceramics without sintering additives. Also the bending strength reaches (474±25) MPa,and the thermal conductivity is
. Additionally,this study also investigates the influence of the sintering additives on the metallography of AlN ceramics, with results showing that a small amount of Sm
2
O
3
is beneficial for refining the grain size of AlN and purifying lattice oxygen,thereby simultaneously enhancing the thermodynamic properties of AlN ceramics.
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