摘要
釔安定氧化鋯具高硬度、高韌性、化學及高溫穩定性的優良性能。本實驗以釔安定氧化鋯成型粉摻雜高分子材料、石蠟及硬脂酸，使用射出成型製程製備氧化鋯陶瓷製品。實驗中藉由調整不同粉體固含量及黏結劑中主黏結劑與次黏結劑之比例，依照不同配比實施混練，再以射出成型試驗比較在不同粒料配比下粉體之成型性，以及粉體與黏結劑之混合效果。 實驗結果顯示氧化鋯粉體固含量最高為52 vol.%，而於相同的固含量下，聚丙烯與石蠟比例降低，有助於胚件縮小孔隙、並使收縮率降低。而固含量的提高雖可提升燒結體的緻密度、收縮率亦可降低，但提高固含量粒料流動性差不利於射出，為了避免短射或胚件中產生裂縫，射出速度與溫度都必須提升。
並列摘要
Yttrium Stabilized Zirconia (YSZ) has the good properties such as high hardness, high toughness, good chemical and high temperature stability. In this study, YSZ powder doped polymer molding materials, paraffin and stearic acid, prepared using the injection molding process of zirconia ceramics are characterized. The results indicate the solid loading 52 vol. % is limit of zirconia. Decreasing polypropylene and paraffin wax content ratio can decreases pore size and number of pores after sintering, as well as a decrease in the shrinkage of sample after sintering. The increase in solid content can enhance the density of the sintered bodies and a reduction in shrinkage. Yet, the increase in the solid content of shoot material difference is not good injection of liquidity. In order to avoid short shots or crack bormation in embryo pieces, injection speed and temperature need to increase. In the same solid content, the low proportion of polypropylene and paraffin wax, it wolld help narrow the pore and reduce shrinkage.