无机材料学报

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放电等离子快速烧结纳米3Y-TZP材

李蔚1; 高濂1; 郭景坤1; 官本大树2; DIAZDELATORRESebastian2   

  1. 1. 中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室; 上海 200050; 2. 日本大阪府立产业技术综合研究所大阪590-02日本
  • 收稿日期:1998-11-26 修回日期:1999-01-05 出版日期:1999-12-20 网络出版日期:1999-12-20

Fabrication of Nano 3Y-TZP by Spark Plasma Sintering

LI Wei1; GAO Lian1; GUO Jing-Kun1; MIYAMOTO Hiroki2; DIAZ DE LA TORRE Sebastian2   

  1. 1. State Key Lab of High Performance Ceramics & Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China; 2. Technology Research Institute of Osaka Prefecture, Osaka 590-02, Japan
  • Received:1998-11-26 Revised:1999-01-05 Published:1999-12-20 Online:1999-12-20

摘要: 本文采用放电等离子烧结技术(SPS)快速烧结纳米3Y-TZP材料.利用SPS技术快速烧结,可制备出完整、致密的3Y-TZP材料.在烧结温度为1300℃、保温3min条件下,相对密度达98.2%,晶粒仅100~130nm.研究发现:材料的密度随烧结温度的变化趋势与一般快速烧结有明显区别;材料的晶粒随烧结温度的提高而长大,但长大幅度小于其他一些烧结方法所得的3Y-TZP材料.本研究对这些现象进行了理论解释.研究同时表明:通过提高烧结速率制备晶粒<100nm的3Y-TZP材料是很困难的.

关键词: 纳米3Y-TZP, 放电等离子烧结

Abstract: The SPS(Spark Plasma Sintering) process was used to prepare ultrafine 3Y-TZP materials. It was found that dense samples(>2g) without
crack can be fabricated by SPS process. The density of the samples increases with the rising of sintering temperature and soaking time.
The grain size of the sample also increases with the rising of sintering temperature but the increasing speed will be slow compared with some other
sintering methods. The mechanism of these phenomena was investigated. By choosing appropriate conditions, ultrafine 3Y-TZP materials with grain
size of about 100--130nm and relative density of 98.2% can be made.

Key words: nano 3Y-TZP, SPS

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