快速烧结系统对氧化锆机械性能的影响

doi:10.13701/j.cnki.kqyxyj.2021.04.014

摘要/Abstract

摘要： 目的: 探讨常规烧结条件下满足齿科氧化锆机械性能要求的试件,在快速烧结条件下密度、显气孔率、维氏硬度、挠曲强度值等的改变。方法: 采用二次烧结法制备试件。预烧结制得22个试件,其中8个长条形,14个圆片状。将两种不同形状预烧结素坯随机均分为快速烧结组 (SS) 与常规烧结组 (CS) 进行终烧结,排除严重变形试件后,通过相关检测比较两种烧结系统对自制试件密度、显气孔率、维氏硬度、挠曲强度值等的影响。结果: 两种终烧结方法制备试件密度无显著差异(P>0.05) 。快速烧结组维氏硬度值略高且结果具有统计学意义(P<0.05),但其显气孔率高于常规烧结组,挠曲强度值略低于常规烧结组且结果具有统计学意义(P<0.05)。表面形貌表征可见快速烧结组制备的试件晶粒更细小,但相比常规烧结组试件晶粒排列不够均匀,且可见气孔。结论: 快速烧结系统缩短了烧结时间,且制备出的材料机械性能与常规烧结系统相比差距不大,在未来市场上的发展极具潜力。但其烧制出的自制试件气孔率升高,挠曲强度值下降,证明其对材料的制备工艺有更高的要求。

关键词: 快速烧结, 氧化锆, 机械性能, 晶相结构

Abstract: Objective: To investigate the changes of density, apparent porosity, Vickers hardness, flexural strength, and other performance of specimens at speed sintering conditions which met the requirements of dental zirconia mechanical properties under conventional sintering conditions. Methods: Specimens were prepared by the process of second sinter. Firstly, 22 specimens were prepared by the process of pre-sinter, of which 8 were long strips and 14 were discs. The pre-sintered blanks were divided equally into two groups for final sintering: the speed sintering group (SS) and the conventional sintering group (CS). The effects of two sintering system on the density, apparent porosity, Vickers hardness, flexural strength, and surface morphology of the self-made specimens were compared by related analysis. Results: The density of self-made zirconia prepared by speed sintering was similar to that prepared by conventional sintering method (P>0.05). The Vickers hardness and apparent porosity of speed sintering were higher than those of conventional sintering group (P<0.05), and the flexural strength was slightly lower than that of conventional sintering group (P<0.05). The crystal grains of the specimens prepared by speed sintering were smaller and denser, but the arrangement of the crystal grains was not well-distributed compared with the conventional sintering group, and the pores were visible. Conclusion: The speed sintering system will have great developmental potential in the future. However, the preparation has higher requirements.

Key words: speed sintering, zirconia, mechanical properties, crystal structure

李一帆, 周志伟, 汪振华. 快速烧结系统对氧化锆机械性能的影响[J]. 口腔医学研究, 2021, 37(4): 339-343.

LI Yifan, ZHOU Zhiwei, WANG Zhenhua. Effect of Speed Sintering System on Mechanical Properties of Zirconia[J]. Journal of Oral Science Research, 2021, 37(4): 339-343.

参考文献

[1] 焦宝祥,管浩.陶瓷工艺学[M].北京:化工工业出版社,2019:191-193.
[2] 赵世玺,刘韩星.钛酸钡陶瓷晶界结构、偏析与性能[J].功能材料,2000,31(3):233.
[3] 杜亚男,范立坤.高性能氧化锆陶瓷最优工艺研究[J].中国陶瓷工业,2019,26(6):1-4.
[4] 刁惠波.氧化锆全瓷冠口腔材料相关问题的临床问答[J].中国组织工程研究与临床康复,2009,13(34):6764.
[5] 熊峰,彭如恕.二次烧结温度对牙科氧化锆陶瓷组织和力学性能的影响[J].现代技术陶瓷,2015,36(5):1-4.
[6] Kaizer MR, Gierthmuehlen PC, Santos MBD, et al. Speed sintering translucent zirconia for chairside one-visit dental restorations: Optical, mechanical, and wear characteristics[J]. Ceram Int, 2017, 43(14) :10999-11005.
[7] 王秋月,冯驭驰.椅旁快速烧结条件下3种氧化锆机械性能的比较[J].中国组织工程研究,2019,23(6):877-882.
[8] 黄慧,张富强,姚自栋,等.4种齿科CAD/CAM陶瓷材料的可加工性能研究[J].口腔医学研究,2011,27(3):187-190.
[9] 刘诗铭,刘峰.椅旁CAD/CAM修复材料分类和新进展[J].口腔医学,2017,37(8):673-677.
[10] ISO 6872: 2015(E). Dentistry-Ceramic materials [S]. 2015.
[11] 詹文辉,江月梅,黄玮.烧结对牙科用氧化锆陶瓷性能的影响[J].口腔医学研究,2015,31(11):1164-1166.
[12] 黄慧,魏斌,张富强,等.两次烧结工艺对氧化锆陶瓷性能的影响[J].华西口腔医学杂志,2008,26(2):175-178.
[13] 赵晓慧,吴音,尹笑然,等.相结构对ZrO₂陶瓷透光度的影响[J].稀有金属材料与工程,2018,47(S1):18-21.
[14] 张晓旭,朱东彬,梁金生.齿科氧化锆陶瓷水热稳定性研究进展[J].无机材料学报,2020,35(7):759-768.
[15] 姚嘉炜. 氧化锆陶瓷材料的制备新工艺与组织性能[D].华南理工大学,2019:68-99.
[16] 张其土.无机材料科学基础[M].上海:华东理工大学出版社,2017:323.
[17] 谢志鹏,许靖堃,安迪.先进陶瓷材料烧结新技术研究进展[J].中国材料进展,2019,38(9): 821-830+886.
[18] 左晓云,韩彦峰,司文捷,等.椅旁快速烧结对牙科高透氧化锆半透性的影响[J].北京口腔医学,2018,26(6):306-309.
[19] Jansen JU, Lümkemann N, Letz I, et al. Impact of high-speed sintering on translucency, phase content, grain sizes, and flexural strength of 3Y-TZP and 4Y-TZP zirconia materials [J]. J Prosthet Dent, 2019, 122(4): 396-403.
[20] Soult MD, Lien W, Savett DA, et al. Effect of high-speed sintering on the properties of a zirconia material [J]. Gen Dent, 2019, 67(5): 30-34.
[21] Nakamura T, Nakano Y, Usami H, et al. In vitro investigation of fracture load and aging resistance of high-speed sintered monolithic tooth-borne zirconi-a crowns [J]. J Prosthodont Res, 2020, 64(2): 182-187.
[22] Cokic SM, Vleugels J, Van Meerbeek B, et al. Mechanical properties, aging stability and translucency of speed-sintered zirconia for chairside restorations [J]. Dent Mater, 2020, 36(7): 959-972.