Characteristics of an Optical Fiber Hydrogen Gas Sensor Based on a Palladium and Yttrium Alloy Thin Film
Characteristics of an Optical Fiber Hydrogen Gas Sensor Based on a Palladium and Yttrium Alloy Thin Film
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DOI：
10.1109/jsen.2013.2258904
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发表时间：
2013-07-01
影响因子：
4.3
通讯作者：
Zhang, Gang
中科院分区：
文献类型：
--
作者：
Liu, Yi;Chen, You-Ping;Zhang, Gang
为了改善氢传感器的特性，Pd 中掺杂原子的选择至关重要。制备并利用新型钯（Pd）和钇（Y）薄膜来设计反射光纤氢气传感器。检查了氢传感器的性能和机械特性。实验结果表明，随着氢气浓度的增加，传感器的响应值明显且迅速下降，传感器零点的首次漂移随着氢气浓度的增加而增大，频繁使用可以减少传感器的漂移，提高重复性。 Pd-Y合金薄膜传感器在多次充氢/卸载循环后，比纯Pd薄膜传感器具有更小的零点漂移和更好的抗氢脆性能。制作并测试了几个不同厚度的薄膜样品。传感器在低浓度氢气和厚膜下灵敏度较高。
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.