晶界偏析对四价元素掺杂3Y-TZP牙修复陶瓷耐老化性能和力学性能的影响

IF 4.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Smart and Nano Materials Pub Date : 2023-04-03 DOI:10.1080/19475411.2023.2197866

Bing Deng, Rongfang Zou, Y. Huang, Lu Feng, Yanru Chen

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引用次数: 1

摘要

在口腔潮湿环境中，3Y-TZP陶瓷长期遭受低温降解(low-temperature degradation, LTD)，导致其力学性能退化和灾难性失效。通过分析不同含量样品的晶界偏析，研究了低成本四价(Ge4+， Ti4+)元素掺杂3Y-TZP的低温降解(LTD)和力学性能。结果表明，当含量≥1.5 mol%时，GeO2的抗折强度和断裂韧性较低，但在极限极限上优于TiO2。添加0.1% ~ 0.5 wt% Al2O3可以改善这一困境，与1Ge-3Y相比，0.25 wt% Al2O3氧化锆的抗弯强度和断裂韧性分别提高到898 MPa和4.68 MPa·m1/2。本研究有望为廉价牙科材料的开发和应用提供有效的参考。图形抽象

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Effect of grain boundary segregation on aging resistance and mechanical properties of tetravalent element-doped 3Y-TZP ceramics for dental restoration

ABSTRACT In the humid oral environment, 3Y-TZP ceramics always suffer from low-temperature degradation (LTD) for a long time, which results in the degradation of mechanical properties and catastrophic failure. The low-temperature degradation (LTD) and mechanical properties of low-cost tetravalent (Ge4+, Ti4+) element-doped 3Y-TZP were investigated by analysing grain boundary segregation in samples with deferent contents. The results show that GeO2 is superior to TiO2 in limiting LTD but results in lower flexural strength and fracture toughness when the content is ≥1.5 mol%. This dilemma can be improved by adding only 0.1%-0.5 wt% Al2O3, and the flexural strength and fracture toughness of 0.25 wt% Al2O3 zirconia are then increased to 898 MPa and 4.68 MPa·m1/2 compared with 1Ge-3Y, respectively. This work is expected to provide an effective reference for the development and application of budget dental materials. GRAPHICAL ABSTRACT

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来源期刊

International Journal of Smart and Nano Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.30

自引率

5.10%

发文量

审稿时长

11 weeks

期刊介绍： The central aim of International Journal of Smart and Nano Materials is to publish original results, critical reviews, technical discussion, and book reviews related to this compelling research field: smart and nano materials, and their applications. The papers published in this journal will provide cutting edge information and instructive research guidance, encouraging more scientists to make their contribution to this dynamic research field.