许力强,宋文植,孙宏晨.2种纳米粉体对牙科ZrO2陶瓷掺杂增强效果的比较[J].口腔材料器械杂志,2014,23(3):141-146.
2种纳米粉体对牙科ZrO2陶瓷掺杂增强效果的比较
Comparison of the enhancement effect of two different nanopowders doping on dental ZrO2 ceramics
投稿时间：2014-04-13  修订日期：2014-04-30
DOI：10.11752/j.kqcl.2014.03.06
中文关键词:  微米ZrO2  纳米α-Al2O3  纳米ZrO2  ZrO2复相陶瓷  力学性能
英文关键词:Micrometer ZrO2  Nanometer α-Al2O3  Nanometer ZrO2  ZrO2composite ceramics  Mechanical properties
基金项目:
作者单位E-mail
许力强 深圳市人民医院口腔中心, 深圳 518020  
宋文植 吉林大学中日联合医院口腔系, 长春 130031 songwz@jlu.edu.cn 
孙宏晨 吉林大学口腔医院, 长春 130021  
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中文摘要:
      目的观察不同纳米粉体填充到微米尺度的ZrO2造粒粉中对陶瓷ZrO2纳米复合材料性能的影响。方法利用超声波-共沉淀法制备纳米α-Al2O3粉体;利用反向沉淀法制备氧化钇稳定的纳米锆粉体;作为第二相,以不同的量(体积百分比,vol%)填充到基质微米ZrO2造粒粉中,高温煅烧后,测试了纳米粉体掺杂ZrO2陶瓷复合材料的弯曲强度、断裂韧性和维氏硬度等力学性能。结果纳米α-Al2O3的最佳填充量为5 vol%,此时ZrO2复相陶瓷的弯曲强度和断裂韧性分别为(659.17±46.54)MPa和(8.55±0.89)MPam1/2;纳米ZrO2的最佳填充量为10 vol%,此时ZrO2复相陶瓷的弯曲强度和断裂韧性分别为(673.17±47.19)MPa和(9.01±0.82)MPam1/2。结论当填充纳米ZrO2和纳米α-Al2O3的量≤5vol%(如10 vol%)时,前者增强效果优于后者;但当填充量≤5 vol%时,后者的增强效果优于前者。
英文摘要:
      Objective To observe the influences of doping different nanopowders into ZrO2 micrometer granulated powder on the properties of ZrO2 nanocomposite ceramic. Methods Theα-Al2O3 nanopowders were prepared by the ultrasonic-assisted precipitation method, and the Y2O3 stabilized ZrO2 nanopowders were prepared by the reverse-precipitation method. The different amounts (vol%) of theα-Al2O3 or ZrO2 nanopowders were added to the micrometer-sized ZrO2 matrix, and then sintered at a high temperature. Further, the nanopowders doped ZrO2 ceramic were characterized by the mechanical properties including flexural strength, fracture toughness and Vickers-hardness. Results There was an optimum amount of dopedα-Al2O3 or ZrO2 nanopowders. In the case ofα-Al2O3 nanopowder, 5 vol%was the optimum amount. When doped with 5 vol%α-Al2O3 nanopowder, the flexural strength of ZrO2 nanocomposite ceramic was (659.17±46.54) MPa and the fracture toughness was (8.55 ±0.89) MPam1/2, respectively. In the case of ZrO2 nanopowder, 10 vol%was the optimum amount. When doped with 10 vol%ZrO2 nanopowder, the flexural strength of ZrO2 nanocomposite ceramic was (673.17±47.19) MPa and the fracture toughness was (9.01±0.82) MPam1/2, respectively. When the doped amount was less or equal to 5 vol%, the enhancement effect ofα-Al2O3 nanopowder doping was better than that of ZrO2 nanopowders doping. Conclusion When the doped amount of ZrO2 nanopowder orα-Al2O3 nanopowder was greater than 5 vol%, the enhancement effect of the former was better than that of the latter. However, when the doped amount of ZrO2 orα-Al2O3 nanopowder was less than or equal to 5 vol%, the enhancement effect of the latter was better than that of the former.
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