本文探索了以自蔓延高温（SHS）法合成并经抗水化处理的AlN粉为原料，添加YLiO2－CaF2／YLiO2－CaCO3的AlN陶瓷的低温烧结.研究表明，YLiO2－CaF2／YLiO2－CaCO3是有效的低温烧结助剂，添加5wt％YLiO2和0．5wt％CaF2。，在1675℃下保温6h可得到密度为3．29g／cm3、热导率为97w／m.K的中等性能的AlN陶瓷.同时对YLiO2-CaF2、YLiO2－CaCO3两种添加剂系统进行了对比研究．结果表明，在同样的烧结条件下，前者对AlN陶瓷的低温烧结更为有利．
The paper studied low-temperature sintering of Y-Li-Ca-Doped anti-hydrolysis AlN powders synthesized by SHS method. It is found that
Y-Li-Ca additive systems are beneficial for low-temperature sintering of AlN ceramics. AlN samples with density of 3.29g/cm3 and thermal
conductivity of 97 W/m·K were obtained after sintering at 1675℃ for 6 h with the additions of 5wt% YLiO2 and 0.5wt% CaF2.
The work also indicates that YLiO2-CaF2 is better for low-temperature sintering of AlN than YLiO2-CaCO3 under the same sintering conditions.
参考文献
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