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A combined structural, microstructural and dilatometric analysis of MgPSZ
Journal of the European Ceramic Society ( IF 5.7 ) Pub Date : 2017-12-18 , DOI: 10.1016/j.jeurceramsoc.2017.12.027
A.I.B. Rondão , M.R. Soares , D.M. Tobaldi , A. Ferreira , J.A. Labrincha , F.M.B. Marques

MgO-doped partially stabilized zirconia (MgPSZ) is a ceramic where three phases (cubic, tetragonal and monoclinic zirconia) might coexist due to non-equilibrium conditions and proper quantification of phase content is difficult. Here, a few selected compositions (in the 7–10 mol% MgO range) and firing profiles were studied in order to cover several phase compositions and microstructural features. An original attempt is made to correlate data obtained by X-ray diffraction (XRD), dilatometry (DIL) and scanning electron microscopy (SEM). Distinct software packages used in the analysis of XRD patterns of different samples confirmed the shortcomings of the assessment of phase content in sintered bodies while proper handling of DIL data provided complementary quantitative information on their phase content. The suggested procedure can be further used to obtain a subtle insight on phase development with temperature, subject of major relevance with respect to tuning of the mechano-thermal behavior of these ceramics.



中文翻译:

MgPSZ的组合结构,微观结构和膨胀分析

掺MgO的部分稳定的氧化锆(MgPSZ)是一种陶瓷,其中由于不平衡条件,三相(立方,四方和单斜晶氧化锆)可能共存,并且很难正确地量化相含量。在这里,研究了一些选定的成分(在7-10 mol%MgO范围内)和烧成曲线,以涵盖几种相组成和微观结构特征。尝试进行原始处理以关联通过X射线衍射(XRD),膨胀计(DIL)和扫描电子显微镜(SEM)获得的数据。用于分析不同样品的XRD图谱的不同软件包证实了烧结体中相含量评估的缺点,而正确处理DIL数据则可提供有关其相含量的定量信息。

更新日期:2017-12-18
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