期刊
APPLIED PHYSICS LETTERS
卷 105, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4900779
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资金
- Air Force Office of Scientific Research [FA9550-12-1-0098]
- National Science Foundation [ECS-0335765, DMR-0820484]
Scanning AC nano-calorimetry is a recently developed experimental technique capable of measuring the heat capacity of thin-film samples of a material over a wide range of temperatures and heating rates. Here, we describe how this technique can be used to study solid-gas phase reactions by measuring the change in heat capacity of a sample during reaction. We apply this approach to evaluate the oxidation kinetics of thin-film samples of zirconium in air. The results confirm parabolic oxidation kinetics with an activation energy of 0.59 +/- 0.03 eV. The nano-calorimetry measurements were performed using a device that contains an array of micromachined nano-calorimeter sensors in an architecture designed for combinatorial studies. We demonstrate that the oxidation kinetics can be quantified using a single sample, thus enabling high-throughput mapping of the composition-dependence of the reaction rate. (C) 2014 AIP Publishing LLC.
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