Micromachinable Polymer-Derived Ceramic Ultrahigh-Temperature Sensors

该项目旨在开发精确和坚固的超高温微传感器，用于发电和飞机推进涡轮发动机内部的热通量和动压的原位测量。所提出的传感器是基于一类新的高温多功能材料最近在pi ？中佛罗里达大学（UCF）的实验室。这种材料被命名为聚合物衍生陶瓷（PDCs），具有优异的高温耐久性、微加工能力和可调电子性能的独特组合，因此适用于恶劣的环境应用。为了开发必要的知识基础，这将导致新型高温微传感器和涡轮发动机系统传感系统的成功开发，以下研究任务将在这个为期三年的项目中进行：(i)开发PDC电子特性微调的能力，（ii）优化确定PDC传感器的微加工条件；（三）热流传感器和动压传感器的建模、设计和制造；（iv）表征所制备传感器的性能和高温稳定性。拟议的研究将由一个跨学科团队进行，该团队由材料科学、微机械加工和传感器设计/表征领域的专业知识组成。当地相关行业的专家也将参与传感器性能评估

This project aims to develop accurate and robust ultrahigh temperature microsensors for in situ measurement of heat-flux and dynamic pressure inside turbine engines for power generation and aircraft propulsion. The proposed sensors are based on a new class of high-temperature multifunctional materials recently developed in PIs? laboratory at University of Central Florida (UCF). The materials, named Polymer-Derived Ceramics (PDCs), possess a unique combination of excellent high-temperature durability, micromachinable capability, and tunable electronic properties, thus suitable for harsh environmental applications. In order to develop the necessary knowledge base, which will lead to the successful development of novel high temperature microsensors and sensing systems for turbine engine systems, the following research tasks will be performed within this three-year project: (i) developing capability for fine tuning the electronic properties of PDCs, (ii) optimally determining micromachining conditions for PDC sensors; (iii) modeling, designing and fabricating heat-flux sensor and dynamic pressure sensor; and (iv) characterizing the performance and high-temperature stability of the fabricated sensor. The proposed research will be conducted by an interdisciplinary team consisting of expertise in the fields of materials science, micromachining, and sensor design/characterization. Experts from related local industries will also be involved in sensor performance evaluation