高温薄膜熱電偶機 航空エンジン用
Keying Guo1, Yazhong Lu2, Zhihui Liu3
1Zhejiang University-University of Illinois Urbana-Champaign Institute, Zhejiang University, Hangzhou, China.
PloS one
|August 26, 2025
まとめ
高温の航空エンジン向けに新しい薄膜熱電偶センサーが開発されました. この頑丈なセンサーは,厳しい環境でも 1100 °Cまでの正確な温度測定を実現します.
科学分野:
- 材料科学
- 航空宇宙工学
- センサー技術
背景:
- 飛行機のエンジンは 極端な温度や厳しい環境で動作します
- タービンのブレード寿命と冷却効率のために,正確な局所温度モニタリングが不可欠です.
- 既存の温度センサーは このような厳しい環境で 限界に直面しています
研究 の 目的:
- ニッケル基の超合金に直接堆積するための薄膜熱電偶センサーの開発と調査.
- 高温操作と厳しい環境での航空機エンジンアプリケーションの課題に対処する.
- タービンの部品の局所温度測定の精度を高めるため
主な方法:
- マグネトロン噴射と電子ビーム蒸発を用いた多層薄膜センサーの製造.
- NiCrAlY 移行層,Al2O3 絶縁層/保護層,Pt10Rh/Pt 敏感層の沈殿
- 高温でのセンサー性能の特徴づけ
主要な成果:
- 薄膜熱電偶センサーは1100 °Cまで効果的に動作します.
- シーベック係数が8.16μV/°Cに達した.
- 最大温度誤差が±1%以下で,使用寿命が20時間以上であることを証明した.
結論:
- 開発された薄膜熱電偶センサーは,厳しい航空機エンジン環境に適しています.
- これは局所的な温度測定の精度を大幅に改善します.
- タービンブレード寿命の予測と冷却システムの設計に有用なデータを提供します.
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