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首页> 外文期刊>International Journal of Applied Ceramic Technology / Functional Ceramics >Two-Stage Master Sintering Curve Approach to Sintering Kinetics of Undo peel and Al_2O_r Doped 8 Mol% Yttria-Stabilized Cubic Zirconia
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Two-Stage Master Sintering Curve Approach to Sintering Kinetics of Undo peel and Al_2O_r Doped 8 Mol% Yttria-Stabilized Cubic Zirconia

机译：两阶段主烧结曲线法研究还原皮和Al_2O_r掺杂的8摩尔％氧化钇稳定的氧化锆的烧结动力学

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摘要

Eight mol% of YSZ is considered as one of the most promising electrolyte materials for solid oxide fuel cell. Small amount of Al_2O_3 is often added to 8YSZ to enhance its mechanical properties and conductivity, as well as to improve its sintering behavior. In this study, the activation energy and sintering kinetics of both undoped and 0.2-2.0 wt% Al_2O_3-doped 8YSZ are determined with the help of master sintering curve (MSC). It was found that a better representation of the sintering behavior could be achieved by constructing MSC over two consecutive densification stages with the relative density of 60% set as the boundary. From the activation energy values of the two stages obtained, two densification mechanisms were identified for the undoped and Al-doped samples. Based on literature data, the possible mechanisms that dominate the two stages were proposed and discussed.
机译：八摩尔％的YSZ被认为是用于固体氧化物燃料电池的最有希望的电解质材料之一。通常将少量的Al_2O_3添加到8YSZ中，以增强其机械性能和电导率，并改善其烧结性能。在这项研究中，借助主烧结曲线（MSC）确定了未掺杂和0.2-2.0 wt％Al_2O_3掺杂的8YSZ的活化能和烧结动力学。已经发现，通过在两个连续的致密化阶段中以相对密度为60％作为边界来构建MSC，可以更好地表示烧结行为。从获得的两个阶段的活化能值中，确定了未掺杂和铝掺杂样品的两种致密化机理。基于文献数据，提出并讨论了主导这两个阶段的可能机制。

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    Xiaochao Song; Jie Lu; Tianshu Zhang; Jan Ma;

  • 作者单位

    School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore, Singapore;

    School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore, Singapore;

    School of Materials Science and Engineering, University of New South Wales, Sydney, NSW 2052, Australia;

    Temasek Laboratories, Nanyang Technological University, 637553 Singapore, Singapore;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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