预烧结温度对多孔氧化锆陶瓷孔隙率和力学性能的影响
Effects of Pre-sintering Temperature on Porosity and Mechanical Properties of Porous Zirconia Ceramics
摘 要
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 ℃。
预烧结温度
孔隙率
硬度
抗弯强度
porous zirconia ceramics
pre-sintering temperature
porosity
hardness
bending strength
Abstract
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 strength increased as the pre-sintering temperature rose from 850 ℃ to 1 000 ℃. When pre-sintering temperature was above 1 000 ℃, the ceramic particles would form sintering neck, this would greatly improve the mechanical properties of the ceramics. The suitable pre-sintering temperature for milling porous zirconia ceramics was 1 050 ℃.
中图分类号 TG113 DOI 10.11973/jxgccl201603006
所属栏目 试验研究
基金项目 湖南省高等学校科学研究项目(12C0324)
收稿日期 2015/4/1
修改稿日期 2015/9/13
网络出版日期
作者单位点击查看
备注熊峰(1990-), 男, 湖南湘潭人, 硕士研究生。
引用该论文: XIONG Feng,PENG Ru-shu. Effects of Pre-sintering Temperature on Porosity and Mechanical Properties of Porous Zirconia Ceramics[J]. Materials for mechancial engineering, 2016, 40(3): 23～26
熊峰,彭如恕. 预烧结温度对多孔氧化锆陶瓷孔隙率和力学性能的影响[J]. 机械工程材料, 2016, 40(3): 23～26
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【3】王莉丽, 王秀峰, 江红涛, 等. 多孔氧化锆基体上涂覆羟基磷灰石涂层材料的制备和性能［J］. 机械工程材料, 2008, 32(12): 5-7.
【4】DENRY I, KELLY J R. State of the art of zirconia for dental applications ［J］. Dental Materials, 2008, 24 (3): 299-307.
【5】胡晓洪, 张庆今. 液相法制备氧化锆超细粉的团聚结构及对成型性能影响［J］. 中国陶瓷, 1994(6): 13-15.
【6】王莉丽, 王秀峰, 于成龙, 等. ZrO2与HA 复合粉体的烧结行为［J］. 机械工程材料,2009, 33(11): 8-10.
【7】FUKUSHIMA M, ZHOU Y, MIYAZAKI H, et al. Microstructural characterization of porous silicon carbide membrane support with and without alumina additive ［J］. Journal of the American Ceramic Society,2006, 89(5): 1523-1529.
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