烧结方式对12Ce-TZP致密化、显微组织和电导率的影响

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

Advances in Applied Ceramics Pub Date : 2021-05-03 DOI:10.1080/17436753.2021.1919362

L. S. Ferreira, E. Muccillo

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引用次数: 1

摘要

摘要采用常规、快速烧成和两步烧结法，采用固相反应法制备了含12mol %氧化铈的氧化锆陶瓷。改变烧结温度和烧结时间，以确定这些方法的理想烧结曲线。研究了致密试样的单斜相和四方相含量、显微组织和电导率。线形收缩率在1100℃以下可以忽略不计，在1150℃达到最大收缩率。常规烧结试样致密化时间延长至2 h。在高温(1500℃)下，非等温烧结试样中的四方相发生稳定。两步法烧结的试样密度高，晶粒尺寸小。确定了所有烧结方法的最佳烧结轮廓。

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Influence of the sintering method on densification, microstructure and electrical conductivity of 12Ce-TZP

ABSTRACT Zirconia containing 12 mol-% cerium oxide ceramics were prepared by solid state reaction utilising the conventional, fast firing and two-step sintering methods. The sintering temperature and time were varied aiming to determine ideal sintering profile for these methods. The monoclinic and tetragonal phase contents, microstructure and electrical conductivity of dense specimens were investigated. The linear shrinkage was found negligible up to 1100°C and the maximum rate of shrinkage was achieved at 1150°C. Densification increased up to 2 h for conventional sintered specimens. Stabilisation of tetragonal phase in non-isothermally sintered specimens occurred at a high temperature (1500°C). Specimens sintered by the two-step method attained high density along with small grain sizes. Optimised sintering profiles were determined for all the sintering methods used.

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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.