研究了快速热压烧结和放电等离子快速烧结(SPS)制备纳米YTZP材料.利用快速热压烧结和SPS快速烧结，可在烧结温度为1200°C、保温9～10min条件下，制得相对密度超过99%的YTZP材料.研究发现：虽然快速热压烧结和SPS烧结都可使YTZP在相同温度下的密度高于普通热压烧结，但两种快速烧结所得YTZP的晶粒都大于无压烧结所得；另外，快速热压烧结所得样品的结构不够均匀，而SPS烧结的样品的均匀性较好.文章对产生这些现象的原因进行了理论探讨.
Ultrafine 3Y-TZP materials were fabricated by the rapid hot-pressing and SPS(Spark Plasma Sintering). It was found that although the relative densities of the Y-TZP sintered by the two kinds of rapid rate sintering methods were higher than that of sintered by ordinary hot-pressing at the similar sintering temperature, the grain sizes were larger than that obtained by pressureless sintering; On the other hand, the structure of the samples sintered by SPS was much homogeneous than that sintered by rapid hot-pressing. The reasons of those phenomena were also discussed. By choosing appropriate condition, ultrafine 3Y-TZP materials with a relative density of 99% could be gotten by both the two kinds of rapid rate sintering.
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