低氧分压下PtO<sub>2</sub>的分解机理研究

doi:10.3969/j.issn.1000-1158.2022.02.07

Abstract
Figure/Table
References (18)
Related Citation (15)

Download: PDF (3800 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract High-purity platinum wires are used as the sensing elements of standard platinum resistance thermometers, the oxidation and decomposition mechanism affects the stability of the thermometers. Differential calorimetry scanning and X-ray photoelectron spectroscopy are used to analyze the decomposition process of two types of platinum oxides PtO2 and PtO in low oxygen atmosphere. The results show that the decomposition temperature of the two oxides is obviously dependent on the partial pressure of oxygen. At the partial pressure of 10kPa, PtO2 is basically completely decomposed into Pt and PtO at 570℃. At the oxygen partial pressure of 3kPa, the initial decomposition temperature of PtO;2 is about 520℃, and a large amount of Pt is decomposed above 565℃. When the temperature reaches 585℃, the decomposition rate of PtO2 into Pt is the fastest. The research results can provide data reference and theoretical support for the improvement of platinum resistance thermometers manufacturing process and metrological verification procedures.

Key words： metrology standard platinum resistance thermometers platinum wire oxygen partial pressure oxidation decomposition mechanism differential calorimetry scanning X-ray photoelectron spectroscopy

Received: 16 November 2020 Published: 23 February 2022

PACS:

TB942

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHU Tian-meng
	PAN Jia-rong
	SUN Jian-ping
	LI Ting
	LI Xu
	WANG Cheng-ke

Cite this article:

ZHU Tian-meng,PAN Jia-rong,SUN Jian-ping, et al. Research on the Decomposition Mechanism of PtO₂ in Low-oxygen Atmosphere[J]. Acta Metrologica Sinica, 2022, 43(2): 184-190.

URL:

http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2022.02.07 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2022/V43/I2/184

［1］邓小龙, 孙建平, 乐恺, 等. 退火对标准铂电阻温度计性能影响的研究［J］. 计量学报, 2015, 36(1): 26-30.
Deng X L, Sun J P, Yue K, et al. The Annealing Effect on the Performance of the Standard Platinum Resistance Thermometer［J］. Acta Metrologica Sinica, 2015, 36(1): 26-30.
［2］牛亚路, 宋凯, 孙建平, 等. 空气环境下PtO;2分解实验的研究［J］. 计量学报, 2018, 39(1): 33-38.
Niu Y L, Song K, Sun J P, et al. Research on the Decomposition Experiment of PtO;2 in Air Environment［J］. Acta Metrologica Sinica, 2018, 39(1): 33-38.
［3］高凯, 蒋庆, 孙建平, 等. 铂丝位错特性对标准铂电阻温度计稳定性影响的研究［J］. 计量学报, 2020, 41(11): 1352-1357.
Gao K, Jiang Q, Sun J P, et al. Influence of Platinum Dislocation Characteristics on the Stability of Standard Platinum Resistance Thermometer［J］. Acta Metrologica Sinica, 2020, 41(11): 1352-1357.
［4］Berry R J . Study of multilayer surface oxidation of platinum by electrical resistance technique［J］. Surface Science, 1978, 76(2): 415-442.
［5］Berry R J. Effect of Pt Oxidation on Pt Resistance Thermometry［J］. Metrologica, 1980, 16(3): 117-126.
［6］Berry R J. Evaluation and control of platinum oxidation errors in standard platinum resistance thermometers［J］. Temperature, 1982, 5(3): 743-762.
［7］Berry R J. Platinum resistance thermometry in the range 630-900℃［J］. Metrologia, 1966, 2(2): 80-90.
［8］Sakurai H, Yamaguchi T, Hiura N, et al. Oxidization Characteristics of Some Standard Platinum Resistance Thermometers［J］. Japanese journal of applied physics, 2008, 47(10): 8071-8076.
［9］Sakurai H, Tamura O. Oxidization Characteristics of Standard Platinum Resistance Thermometers［J］. Japanese journal of applied physics, 2011, 50(1): 437-443.
［10］Jursic I, Rudtsch S. Thermal Stability of PtO Investigated by Simultaneous Thermal Analysis and Its Influence on Platinum Resistance Thermometry［J］. International Journal of Thermophysics, 2014, 35(6-7): 1055-1066.
［11］Ancsin J. Oxidation of platinum resistance thermometers［J］. AIP Conference Proceedings, 2003, 684(1): 345-350.
［12］蒋守红, 石文艳. 差示扫描量热仪(DSC)使用中应注意的一些问题［J］. 企业技术开发, 2013, 32(22): 33-35.
Jiang S H, Shi W Y. Some problems needing attention in application of Differential Scanning Calorimeter［J］. Technological Development of Enterprise, 2013, 32(22): 33-35.
［13］陈兰花, 盛道鹏. X射线光电子能谱分析(XPS)表征技术研究及其应用［J］. 教育现代化, 2018, 5(1): 180-182.
Chen L H, Sheng D P. Research and Application of X-ray Photoelectron Spectroscopy (XPS) Characterization Technology［J］. Education Modernization, 2018, 5(1): 180-182.
［14］Eberhardt W, Fayet P, Cox D M, et al. Photoemission from mass-selected monodispersed Pt clusters［J］. Physical review letters, 1990, 64(7): 780-783.
［15］Moulder J F, Stickle W F, Sobol P E, et al. Handbook of X-ray Photoelectron Spectroscop［M］. Eden Prairie : TPerkin-Elmer Corporation Physical Electronics Division, 1992.
［16］JJG 160—2007 标准铂电阻温度［S］.
［17］于帆,孙建平,李婷,等. 新制标准铂电阻温度计退火特性理论模型及验证［J］. 计量学报, 2021, 42(6): 759-764.
Yu F, Sun J P, Li T, et al. Theoretical Model and Verification of Annealing Characteristic of the New Standard Platinum Resistance Thermometer［J］. Acta Metrologica Sinica, 2021, 42(6): 759-764.
［18］任建平,孙建平,李婷,等. 标准铂电阻温度计自热效应对测量结果的影响［J］.计量学报, 2021, 42(5): 589-594.
Ren J P,Sun J P,Li T, et al. Influence of Self-heating Effect of Standard Platinum ResistanceThermometer on Measurement Results［J］. Acta Metrologica Sinica, 2021, 42(5): 589-594.