YAG多孔陶瓷的烧结工艺优化及性能研究

发布时间：2018-05-15 08:28

  本文选题：YAG多孔陶瓷 + 烧结工艺　； 参考：《陶瓷学报》2017年05期

【摘要】：由于钇铝石榴石(YAG)具有许多优异的性能,因此其被广泛研究和应用。本文对YAG多孔陶瓷烧结工艺进行优化研究,通过研究结果表明:随着升温速率减慢,气孔率先增大后减小,而抗压强度则呈现增大趋势。随着排碳温度的提升,陶瓷的气孔率就降低,但是抗压强度反而有所增强。随着排碳时间的增长,陶瓷气孔率反而下降,但是抗压强度却有所上升。随着烧结温度的增加,陶瓷的气孔率呈现出先增大后减小的趋势,但是抗压强度一直保持增大趋势。随着保温时间的延长,陶瓷气孔率出现降低现象,但是抗压强度则增大。结合YAG多孔陶瓷的气孔率和抗压强度综合考虑,YAG多孔陶瓷的烧结工艺得以优化,较佳烧结工艺为升温速率为8℃/min、排碳温度为800℃、排碳时间为1 h、烧结温度为1450℃,保温时间为2 h,所制备的YAG多孔陶瓷气孔率为57.4%,抗压强度为8.89 MPa。
[Abstract]:Yttrium aluminum garnet (YAGG) has been widely studied and applied because of its many excellent properties. In this paper, the sintering process of YAG porous ceramics is optimized. The results show that with the decrease of heating rate, the porosity increases first and then decreases, and the compressive strength increases. With the increase of carbon removal temperature, the porosity of ceramics decreases, but the compressive strength increases. With the increase of carbon emission time, the porosity of ceramics decreased, but the compressive strength increased. With the increase of sintering temperature, the porosity of ceramics increases first and then decreases, but the compressive strength keeps increasing. With the prolongation of holding time, the porosity of ceramics decreases, but the compressive strength increases. Considering the porosity and compressive strength of YAG porous ceramics, the sintering process was optimized. The optimum sintering process was: heating rate 8 鈩，

本文编号：1891722