期刊论文

中文

机械工程材料

1000-3738

2016

40

3

23-26

10.11973/jxgccl201603006

湖南省高等学校科学研究项目（12C0324）；

本校为第一机构

将氧化锆亚微米粉干压、冷等静压成型后在850?1 100 ℃下进行预烧结,制得了多孔氧化锆陶瓷,研究了预烧结温度对陶瓷孔隙率、硬度和抗弯强度的影响;然后对多孔氧化锆陶瓷进行铣削试验,获得了适合铣削的多孔氧化锆陶瓷的预烧结温度。结果表明:随着预烧结温度升高,氧化锆陶瓷的孔隙率降低,硬度和抗弯强度增加;当预烧结温度高于1 000 ℃后,陶瓷颗粒间会形成烧结颈,将大幅提高陶瓷的力学性能;适合铣削的多孔氧化锆陶瓷的预烧结温度为1 050 ℃。

Firstly, submicron zirconia powder was dry compacted and cold isostatic pressed, and then the blocks were pre-sintered at the temperature range from 850 ℃ to 1 100 ℃. The effects of pre-sintering temperature on porosity, hardness and bending strength of the ceramics were studied. After that, milling experiment was carried out on porous zirconia ceramics, suitable pre-sintering temperature for milling porous zirconia ceramic was obtained for milling. The results show that the porosity of porous zirconia ceramics decreased, hardness and bending...