Crystallographically compatible ceramic shape memory materials

晶体相容的陶瓷形状记忆材料

• 批准号: 313454214
• 负责人: Professor Dr.-Ing. Eckhard Quandt
• 金额: --
• 依托单位: Lehrstuhl für Anorganische Funktionsmaterialien
• 依托单位国家: 德国
• 项目类别: Reinhart Koselleck Projects
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/313454214?language=en
• 关键词: Crystallographically; compatible; ceramic; shape; memory

The unique mechanical properties of metallic shape memory (SM) alloys have spawned many different ground breaking applications. It would thus be of much scientific as well as technological interest to transpose those properties to ceramics. Such an effort would concurrently lead to less brittle ceramic materials. Furthermore, ceramics would be interesting materials providing SM properties at high temperatures or in harsh environments. In this proposal I will thus present a plan to explore ceramics that will display the key SM characteristics, large reversible eigenstrains and high fatigue limits. I will utilize the predictions of the theory of mechanical compatibility in conjunction with our own experiences on metallic NiTiCu films to identify promising ceramic candidate materials, which exhibit next to ideal crystallographic compatibility between the transforming phases. This high degree of compatibility, judged to be essential for ceramic materials, should then result in as yet unknown reversible eigenstrains in structural ceramic materials as well as in new functionalities in ferroelectric ceramics. Within this project the exceptional application perspective will be demonstrated in both ceramic material classes.

金属形状记忆 (SM) 合金独特的机械性能催生了许多不同的突破性应用。因此，将这些特性转移到陶瓷上将具有很大的科学和技术意义。这样的努力将同时导致陶瓷材料的脆性降低。此外，陶瓷将是在高温或恶劣环境下提供 SM 性能的有趣材料。因此，在本提案中，我将提出一项探索陶瓷的计划，该计划将展示关键的 SM 特性、大的可逆本征应变和高疲劳极限。我将利用机械相容性理论的预测结合我们自己在金属 NiTiCu 薄膜上的经验来识别有前途的陶瓷候选材料，这些材料在转变相之间表现出接近理想的晶体相容性。这种高度的相容性被认为对于陶瓷材料至关重要，因此应该会在结构陶瓷材料中产生迄今为止未知的可逆本征应变，并在铁电陶瓷中产生新的功能。在该项目中，两种陶瓷材料类别都将展示卓越的应用前景。

项目成果

Direct observation of intermediate twinning in the phase transformations of ferroelectric potassium sodium niobate

• DOI: 10.1016/j.ceramint.2021.04.067
• 发表时间: 2021-04
• 期刊: Ceramics International
• 影响因子: 5.2
• 作者: P. Pop-Ghe;Monika Amundsen;C. Zamponi;A. Gunnæs;E. Quandt

Tuning crystallographic compatibility to enhance shape memory in ceramics

调整晶体相容性以增强陶瓷的形状记忆

• DOI: 10.1103/physrevmaterials.3.093603
• 发表时间: 2019
• 期刊: Physical Review Materials
• 影响因子: 3.4
• 作者: Jetter;Wuttig;Quandt
• 通讯作者: Quandt

Fabrication of stable monoclinic zirconia-based ceramics

• DOI: 10.1016/j.ceramint.2020.11.093
• 发表时间: 2021-02-23
• 期刊: CERAMICS INTERNATIONAL
• 影响因子: 5.2
• 作者: Jetter, Justin;Rohmer, Jascha;Quandt, Eckhard
• 通讯作者: Quandt, Eckhard

Correlation between phase compatibility and efficient energy conversion in Zr-doped Barium Titanate

• DOI: 10.1038/s41598-020-60335-5
• 发表时间: 2020-02
• 期刊: Scientific Reports
• 影响因子: 4.6
• 作者: M. Wegner;H. Gu;R. James;E. Quandt

Suppression of abnormal grain growth in K0.5Na0.5NbO3: phase transitions and compatibility

• DOI: 10.1038/s41598-019-56389-9
• 发表时间: 2019-12-24
• 期刊: SCIENTIFIC REPORTS
• 影响因子: 4.6
• 作者: Pop-Ghe, Patricia;Stock, Norbert;Quandt, Eckhard
• 通讯作者: Quandt, Eckhard