Wetting and corrosion of yttria stabilized zirconia by molten slags
Wetting and corrosion of yttria stabilized zirconia by molten slags
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DOI：
10.1016/j.jeurceramsoc.2011.12.005
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发表时间：
2012-08-01
影响因子：
5.7
通讯作者：
Nickel, Klaus G.
中科院分区：
文献类型：
--
作者：
Hemberger, Yannick;Berthold, Christoph;Nickel, Klaus G.
我们展示了一项关于氧化钇稳定的氧化锆陶瓷被熔渣腐蚀的研究的初步结果。发现一种典型的冶金熔渣良好的润湿性是熔体与氧化锆有效化学相互作用的先决条件。观察到氧化锆的溶解以及稳定剂向熔渣中的浸出这两种腐蚀机制。后者导致从四方或立方氧化锆相转变为单斜相。这种转变伴随着约5%的体积增加，从而产生裂纹。这些裂纹为腐蚀介质提供了新的途径，加速了腐蚀。由钇部分稳定氧化锆（Y - PSZ）制成的坩埚已在各种熔渣的实验中用作样品。我们还展示了阴极发光显微镜作为一种强大的氧化锆相区分映射工具的应用，这已通过拉曼光谱和X射线衍射测量得到验证。（C）2011爱思唯尔有限公司。保留所有权利。
We present first results of a study dealing with the corrosion of yttria stabilized zirconia ceramics by molten slags. Good wetting of a typical metallurgical slag as a pre-requisite for an effective chemical interaction of melt and zirconia was found. Both the dissolution of Zirconia and the leaching of the stabilizing agent into the molten slag are observed corrosion mechanisms. The latter induces a phase transformation from tetragonal or cubic zirconia into the: monoclinic modification. The transformation with its increase in volume by app. 5% induces cracks. Those act to give new pathways for the corrosive media, accelerating corrosion. Crucibles from Y-PSZ have been used as samples in experiments with various slags. We also demonstrate the use of cathodoluminescence microscopy as a powerful mapping tool for zirconia phase differentiation which was verified by Raman and XRD measurements. (C) 2011 Elsevier Ltd. All rights reserved.