Dynamic creep of Al2O3 whisker-reinforced ZrO2 ceramic composite

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2024-09-21 DOI:10.1016/j.jeurceramsoc.2024.116943

Hongtian He , Haitao Tian , Jingchong Huang , Chao Ma , Hailong Wang , Daoyang Han , Hongxia Lu , Hongliang Xu , Rui Zhang , Gang Shao , Linan An

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引用次数: 0

Abstract

Previous studies on the creep behavior of ceramic materials were primarily conducted under static loads. However, the majority of applications for ceramic materials are subject to dynamic loads, and there is a paucity of research conducted in this area. In this work, we report for the first time the creep behavior of Al₂O₃ whisker-reinforced ZrO₂ composites under dynamic pressure. The results showed that the sample crept under dynamic pressure produced higher creep rate and lower activation energy compared to static pressure. By analyzing the creep data and microstructures, we showed that the dynamic pressure can enhance dislocation motion and transform the creep mechanism from diffusion-controlled grain-boundary sliding to dislocation-controlled grain-boundary sliding. This work provides a foundation for subsequent detailed studies of the creep behavior of ceramic materials under dynamic pressure.

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Al2O3 晶须增强 ZrO2 陶瓷复合材料的动态蠕变

以往对陶瓷材料蠕变行为的研究主要是在静态负载下进行的。然而，陶瓷材料的大多数应用都要承受动态载荷，而这方面的研究却很少。在这项研究中，我们首次报道了 Al2O3 晶须增强 ZrO2 复合材料在动态压力下的蠕变行为。结果表明，与静态压力相比，在动态压力下蠕变的样品蠕变速率更高，活化能更低。通过分析蠕变数据和微观结构，我们发现动压可以增强位错运动，并将蠕变机制从扩散控制的晶界滑动转变为位错控制的晶界滑动。这项工作为后续详细研究陶瓷材料在动态压力下的蠕变行为奠定了基础。

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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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.