水热老化后3Y-TZP纳米氧化锆粉的稳定性

IF 1.3 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Advances in Applied Ceramics Pub Date : 2022-11-17 DOI:10.1080/17436753.2022.2156066

Shafique Ahmed, L. Zou, Haixue Yan

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引用次数: 1

摘要

钇稳定氧化锆(Y-TZP)陶瓷广泛应用于牙科和修复体。然而，它们易受低温降解(LTD)的影响。尽管有几种解释的有限责任公司的机制，它还没有完全理解。在烧结前，采用z - 3y - e级商品粉末对其进行进一步研究。对样品在134℃下进行5 h的水热时效处理。STA分析证实该粉末不含粘合剂。SEM和XRD分析表明，该材料的颗粒尺寸均匀，主要为四方相，次要为单斜相。BET法分析表明，粉末样品在400℃加热前后的孔径、孔体积和比表面积变化不大。从SEM图像计算的粒径分布(SD)显示了粉末的粒径范围为~ 40 ~ 50 nm。结果表明，经水热时效处理后的粉末中未发现LTD。

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Stability of 3Y-TZP nano zirconia powder after hydrothermal ageing treatment

ABSTRACT Yttria-stabilised zirconia (Y-TZP) ceramics are widely used for dental and prosthesis applications; however, they are susceptible to low-temperature degradation (LTD). Despite several explanations of the LTD mechanism, it is not fully understood yet. Commercial TZ-3Y-E grade powder was used to further study the LTD before sintering it. Hydrothermal ageing treatment was applied to samples at 134°C for 5 h. STA analysis confirmed that the powder is binderfree. SEM and XRD analyses show homogeneous particle size and tetragonal as a major phase and monoclinic as a minor phase, respectively. BET method analysis shows a slight change in the pore size, pore volume and surface area of the powder samples, before and after heating at 400°C. Particle size distribution (SD) calculated from SEM images shows ∼ 40–50 nm particle size range of the powders. The results show that LTD was not observed in the powder after hydrothermal ageing treatment.

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来源期刊

Advances in Applied Ceramics 工程技术-材料科学：硅酸盐

CiteScore

4.40

自引率

4.50%

发文量

审稿时长

5.2 months

期刊介绍： Advances in Applied Ceramics: Structural, Functional and Bioceramics provides international coverage of high-quality research on functional ceramics, engineering ceramics and bioceramics.