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首页> 外文期刊>IEEE sensors journal >Characteristics of an Optical Fiber Hydrogen Gas Sensor Based on a Palladium and Yttrium Alloy Thin Film
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Characteristics of an Optical Fiber Hydrogen Gas Sensor Based on a Palladium and Yttrium Alloy Thin Film

机译：基于钯钇钇合金薄膜的光纤氢气传感器的特性

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To improve the hydrogen sensor characteristics, the choice of doping atoms in Pd is crucial. A novel palladium (Pd) and yttrium (Y) thin film is prepared and utilized to design a reflected optical fiber hydrogen gas sensor. The performance and mechanical properties of the hydrogen sensor are examined. Experimental results show that the response value of the sensor decreases evidently and rapidly with increasing hydrogen concentration, the first drift of zero point of sensors increases as hydrogen concentration increases, and frequent use can reduce the drift of the sensor and increase repeatability. The sensor with Pd-Y alloy film possesses smaller zero point drift and better resistance to hydrogen embrittlement than that with pure Pd film after several hydrogen loading/unloading cycles. Several thin film samples with different thicknesses are fabricated and tested. The sensitivity of the sensor is higher at low-concentration hydrogen and thick film.
机译：为了改善氢传感器的特性，Pd中掺杂原子的选择至关重要。制备了新颖的钯（Pd）和钇（Y）薄膜，并将其用于设计反射光纤氢气传感器。检查了氢传感器的性能和机械性能。实验结果表明，随着氢浓度的增加，传感器的响应值明显而迅速地减小；随着氢浓度的增加，传感器零点的第一次漂移增加；频繁使用可以减少传感器的漂移，提高重复性。与纯Pd膜相比，带有Pd-Y合金膜的传感器在经过几次氢气加载/卸载循环后，零点漂移较小，并且对氢脆的耐受性更高。制作并测试了几种具有不同厚度的薄膜样品。在低浓度氢和厚膜下，传感器的灵敏度更高。

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