氧化镧(La2O3)掺杂8mol %钇稳定立方氧化锆(8YSZ)的合成及力学性能

2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI:10.1109/OMEE.2012.6464782

S. Tekeli, B. Aktas, S. Salman

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引用次数: 1

摘要

本文以8mol %钇稳定立方氧化锆(8YSZ)粉末为基体材料，以0- 15wt % La2O3粉末为添加剂，研究了La2O3的添加量和添加量对8YSZ相稳定性、显微组织和力学性能的影响。XRD结果表明，各添加量均存在立方和六方晶体结构。在8YSZ的晶体结构中，高达5 wt%的La2O3完全溶解，而大于5 wt%的La2O3则在高温下与8YSZ反应，生成热氯化物La2Zr2O7。随着La2O3用量的增加，8YSZ的硬度值降低，断裂韧性增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Synthesis and mechanical properties of lanthanum oxide (La2O3)doped 8 mol % yttria-stabilized cubic zirconia (8YSZ)

In this study, 8 mol % yttria stabilized cubic zirconia (8YSZ) powders as a matrix material and 0-15 wt% La2O3 powders as an additive were used in order to determine the effect of La2O3 addition and amount on the phase stability, microstructure and mechanical properties of 8YSZ. XRD results showed the existence of cubic and hexagonal crystal structures for all addition amounts. Besides, La2O3 up to 5 wt% was completely dissolved in the crystal structure of 8YSZ but, La2O3 with higher than 5 wt% reacted with 8YSZ at high temperatures and formed pyrochloric La2Zr2O7 compound. The hardness values of 8YSZ decreased and fracture toughness increased with the increase in La2O3 amount.

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来源期刊

2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)

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