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| Research on the Decomposition Experiment of PtO2 in Air Environment |
| NIU Ya-lu1,2,SONG Kai1,SUN Jian-ping2,LI Xu2,YE Meng3 |
1. Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
2. National Institute of Metrology, Beijing 100029, China
3. Xian Polytechnic University, Xian, Shaanxi 710048, China |
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Abstract Oxidation of high purity platinum wire is one of important factors that affect the temperature measurement performance of standard platinum resistance thermometer. The main reaction product of PtO2 at different temperatures and the formation and decomposition temperature of different products are researched using differential scanning calorimetry and X-ray photoelectron spectroscopy. The results show that PtO2 will decompose into Pt and PtO gradually as the temperature rise between 550 ℃ to 820 ℃. Above 820 ℃, PtO will decompose into Pt and O2 quickly. The results will provide supports for the production and use of standard platinum resistance thermometer.
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Received: 12 October 2016
Published: 29 December 2017
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2018, Vol. 39 
