Solid‐State Hydrogen Sensors Using Palladium‐Nickel Alloys: Effect of Alloy Composition on Sensor Response
Solid‐State Hydrogen Sensors Using Palladium‐Nickel Alloys: Effect of Alloy Composition on Sensor Response
复制标题
使用钯镍合金的固态氢传感器：合金成分对传感器响应的影响
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
R. Buss
中科院分区：
文献类型：
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作者：
R. C. Hughes;W. K. Schubert;R. Buss
Pd和Ni的薄膜合金在非常宽的范围内（从10[sup [minus]3]到700 Torr）成为氢分压（pH[sub 2]）的良好传感器。对于pH[sub 2]从1到700 Torr，合金中Ni的原子百分比对用作感测特性的膜电阻的变化具有强烈的影响。必须避免从[α]相到氢化物[β]相的相变，以保持可逆传感器。镍含量为3，5.3，8和15%的合金的特性进行了报道。在5.3%合金中在约250托下发现相变，但是Ni >8%的合金在环境温度下直到630托（纯H[sub 2]）没有显示相变行为。还报道了Pd/Ni合金传感器的其他特性，包括温度、氧气和相对湿度的影响，以及对pH阶跃变化的响应速度[sub 2]。
Thin film alloys of Pd and Ni make good sensors for hydrogen partial pressures (pH[sub 2]) over a very wide range: from 10[sup [minus]3] to 700 Torr. For pH[sub 2] from 1 to 700 Torr the atomic percent of Ni in the alloy has a strong effect on the change in film resistance which is used as the sensing property. The phase transition from the [alpha]- to the hydride [beta]-phase must be avoided to maintain a reversible sensor. The characteristics of alloys with Ni of 3, 5.3, 8, and 15% are reported. The phase transition was found in the 5.3% alloy at about 250 Torr, but alloys of Ni >8% showed no phase change behavior up to 630 Torr (pure H[sub 2]) at ambient temperatures. Other characteristics of the Pd/Ni alloy sensors are also reported, including the effect of temperature, oxygen, and relative humidity, and the speed of response to step changes in pH[sub 2].