在K型同轴热电偶中应用具有高温电绝缘和高粘度的生物灵感结构陶
Zhenyin Hai1, Yue Chen1, Zhixuan Su1
1School of Aerospace Engineering, Xiamen University, Xiamen 361005, China.
Materials (Basel, Switzerland)
|June 27, 2025
概括
研究人员开发了同轴热电偶的生物灵感陶,使航空航天发动机可靠的高温测量. 这项创新解决了极端环境中绝缘和粘附方面的挑战.
科学领域:
- 材料科学 材料科学 材料科学
- 陶工程 陶工程 陶工程
- 热电偶技术 热电偶技术
背景情况:
- 同轴热电偶在高温废弃环境中面临着绝缘和粘附方面的挑战.
- 表面侵蚀可以创建新的测量结点,影响可靠性.
- 现有的绝缘材料在高温性能和粘附性方面扎.
研究的目的:
- 设计和制造生物灵感结构陶 (BSC) 用于同轴热电偶中的高温电绝缘和粘附.
- 模仿自然结构以提高材料性能.
- 为极端航空航天应用开发可靠的K型同轴热电偶.
主要方法:
- 设计了一种生物灵感结构陶 (BSC),模仿叶中发现的针状晶体.
- 该BSC的特点是高温绝缘阻抗和粘合强度.
- 在K型同轴热电偶中,BSC被集成为绝缘层.
- 热电偶的性能通过静态和动态测试来评估,包括火焰冲击和热冲击.
主要成果:
- 该BSC表现出优异的高温绝缘 (2.55kΩ在1210°C) 和粘合强度 (35.3N).
- 稳定的测量结点是通过不超过600#的砂纸砂实现的.
- K型热电偶显示了广泛的温度范围 (200-1200°C),高精度 (1.1%),低漂移 (<0.0137%/h) 和快速响应时间 (1.08 ms).
- 热电偶承受了300次1200°C的火焰冲击和超过40个热冲击周期.
结论:
- 生物灵感结构陶为同轴热电偶中的高温绝缘和粘附提供了强大的解决方案.
- 开发的K型同轴热电偶可在极端条件下为航空航天发动机组件提供可靠的长期温度监测.
- 这项研究突出了生物灵感材料在要求苛刻的环境中推进高性能传感技术的潜力.
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