Ceramics and their structures with tunable thermal expansion are deemed necessary to develop. In this study, multi-ceramic structures with tunable thermal expansion, including negative thermal expansion (NTE), zero thermal expansion (ZTE), and positive thermal expansion (PTE), were developed for the first time. Firstly, multi-ceramic triangle structures with tunable thermal expansion were designed based on ZrO₂ and Al₂O₃ ceramics. Then, multi-ceramic triangle structures were fabricated by using the stereolithography additive manufacturing technology. Functionally gradient ceramic (FGC) layers were applied for releasing the thermal mismatch stress among the structure. Finally, the thermal expansion behavior of the multi-ceramic triangle structures were characterized and analyzed by using a homemade thermal expansion testing system. The proposed design, fabrication and characterization methods of multi-ceramic structures with tunable thermal expansion are believed to promote the engineering application.

陶瓷及其具有可调热膨胀的结构被认为是开发所必需的。在这项研究中，首次开发了具有可调热膨胀的多陶瓷结构，包括负热膨胀（NTE），零热膨胀（ZTE）和正热膨胀（PTE）。首先，基于ZrO ₂和Al ₂ O ₃设计了具有可调热膨胀率的多陶瓷三角结构。陶瓷。然后，利用立体光刻增材制造技术制造了多陶瓷三角形结构。应用功能梯度陶瓷（FGC）层以释放结构之间的热失配应力。最后，使用自制的热膨胀测试系统对多陶瓷三角结构的热膨胀行为进行了表征和分析。所提出的具有可调热膨胀的多陶瓷结构的设计，制造和表征方法被认为促进了工程应用。