表面声波传感器用于1200摄氏度以上的无线温度测量
Hong Zhang1, Danyu Mu1, Zichao Zhang2
1College of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
Sensors (Basel, Switzerland)
|August 10, 2024
概括
本研究介绍了一种新的表面声波 (SAW) 温度传感器,使用先进的复合电极,适用于高达1200°C的极端热环境. 传感器展示了准确的无线温度监测,这对于航空航天应用至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 传感器技术 传感器技术
- 航空航天工程 航空航天工程
背景情况:
- 高温无线传感对于航空发动机监测至关重要,但传统的表面声波 (SAW) 传感器在极端温度下 (高达1200°C) 由于电极问题而降解.
- 在SAW传感器中,电极聚合和再结晶导致导电性损失和质量因子降低,在恶劣环境中损害无线信号传输.
研究的目的:
- 开发一台强大的LGS SAW传感器,采用一种新的多层复合电极结构,能够可靠地无线测量高达1200°C的温度.
- 通过提高电极耐用性和信号完整性来解决现有的SAW传感器在极端温度下的局限性.
主要方法:
- 使用Pt-10%Rh/Zr多层复合电极结构制造LGS SAW传感器.
- 传感器性能的表征,包括无线温度测量准确度和质量因子 (Q-因子) 从室温到1200°C.
- 在1200°C时评估传感器稳定性和运行寿命.
主要成果:
- 开发的LGS SAW传感器实现了从室温到1200°C的无线温度测量,精度高达1.59%.
- 复合电极在LGS基板上促进了准剪切波,在室温下保持3526的Q系数,确保了强大的初始无线信号.
- 传感器在1200°C下稳定运行了2.18小时,尽管粘附性损失最终影响了性能.
结论:
- 拟议的Pt-10%Rh/Zr多层复合电极结构对高温无线传感应用高达1200°C具有显著的耐用性.
- 建议进一步研究改善电极基板粘附性,以延长传感器的运行寿命并提高航空航天环境中的可靠性.
相关概念视频
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