华西口腔医学杂志

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成型压力和预烧结温度对氧化锆陶瓷可加工性能的影响

黄慧1 李静1 张富强1 孙静2 高濂2   

  1. 1.上海交通大学医学院附属第九人民医院口腔修复科, 上海市口腔医学重点实验室, 上海200011;2.中国科学院上海硅酸盐研究所, 上海200050
  • 收稿日期:2011-10-25 修回日期:2011-10-25 出版日期:2011-10-20 发布日期:2011-10-20
  • 通讯作者: 张富强,Tel:021-63138341-5276
  • 作者简介:黄慧(1968—),女,湖北人,副主任医师,博士
  • 基金资助:

    上海市重点学科建设基金资助项目(S30206);上海市科委生药重点基金资助项目(09411954600)

Influence of compaction pressure and pre-sintering temperature on the machinability of zirconia ceramic

Huang Hui1, Li Jing1, Zhang Fuqiang1, Sun Jing2, Gao Lian2   

  1. 1. Dept. of Prosthodontics, The Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, China; 2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

  • Received:2011-10-25 Revised:2011-10-25 Online:2011-10-20 Published:2011-10-20
  • Contact: Zhang Fuqiang,Tel:021-63138341-5276
  • About author:

摘要:

目的研究预烧结温度和成型压力对预烧结氧化锆陶瓷可加工性能的影响。方法首先将纳米氧化锆粉体在不同的等静压力下成型,并烧结到不同的温度。然后采用精密线切割机进行切削,在体视显微镜下观察切削面的形貌。结果初烧结温度对3摩尔氧化钇稳定氧化锆陶瓷(3Y-TZP)影响较大,初烧结温度在800~900 ℃之间时,切削件的表面光滑、边缘完整性好。成型压力对3Y-TZP预烧结瓷坯可切削性能的影响较小,但过高的成型压力并不利于切削,可导致切削面的质量下降。结论初烧结温度在800~900 ℃、成型压力在200~300 MPa之间时,预烧结氧化锆瓷坯的可加工性能良好。

关键词: 氧化锆, 成型压力, 预烧结温度

Abstract:

Objective In order to make certain the compaction pressure as well as pre-sintering temperature on the machinability of the zirconia ceramic. Methods 3 mol nano-size 3 mol yttria partially stabilized zirconia(3Y-TZP) powder were compacted at different isostatic pressure and sintered at different temperature. The cylindrical surface was traversed using a hard metal tool. Surface and edge quality were checked visually using light stereo microscopy. Results Pre-sintering temperature had the obviously influence on the machinability of 3Y-TZP. The cutting surface was smooth, and the integrality of edge was better when the pre-sintering temperature was chosen between 800 ℃ to 900 ℃. Compaction pressure showed only a weak influence on machinability of 3Y-TZP blanks, but the higher compaction pressure result in the poor surface quality. Conclusion The best machinability of pre-sintered zirconia body was found for 800- 900 ℃ pre-sintering temperature, and 200-300 MPa compaction pressure.

Key words: zirconia, compaction pressure, pre-sintering temperature