Study on Reproducibility and Assignment of Ga-In Eutectic Fixed Point
WANG Cheng-ke1,ZHOU Jing-wei1,WANG Hong-jun2,SUN Jian-ping2,LI Ting2,RUAN Yi-ming1
1. College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, China
2. National Institute of Metrology, Beijing 100029, China
Abstract:The application of secondary fixed point thermometers to temperature calibration has become an important method to reduce the uncertainty of temperature transmission. Focusing on Ga-In binary alloys, aiming at high reproducibility, the development of large-size fixed-point containers and the process of fixed-point infusion are introduced in detail, and the verification experiments on the reproducibility of fixed-points and the excessive gallium temperature plateau of sub-mixture ratio are carried out. The performance of Ga-In fixed point is evaluated and analyzed by three methods of the phase transition temperature determination including the tangent intersection method, the mean value method, and the polynomial fitting method, and then the Ga-In fixed point phase transition temperature is assigned using three standard platinum resistance thermometers. The results show that the Ga-In eutectic fixed point temperature plateau can last for more than 20hours, and the experimental reproducibility is better than 0.15mK. The fixed point phase transition temperature of Ga-In eutectic determined with the tangent intersection method is 15.6494℃, the expanded uncertainty is 0.76mK (k=2).
[1]闫小克, 张哲, 王玉兰. 不同复现方法对镓熔点温度的影响[J]. 计量技术, 2004(5): 18-20.
[2]Preston-Thomas H, Quinn T J. The International Temperature Scale of 1990(ITS-90)[J]. Ibid, 1990, 27(1): 3-10.
[3]姚丽芳, 陈宇, 朱家良, 等. 标准铂电阻温度计用比较法替代定点法分度的探讨[J]. 工业计量, 2013, 23(3): 41-42.
Yao L F, Chen Y, Zhu J L, et al. Discussion on Using Comparison Method to Replace Fixed-point Method for Indexing of Standard Platinum Resistance Thermometer[J]. Industrial Measure- ment, 2013, 23(3): 41-42.
[4]Uchida H, Nakano T, Tamba J, et al. Deep ocean temperature measurement with an uncertainty of 0.7mK[J]. Journal of Atmospheric and Oceanic Technology, 2015, 32(11): 2199-2210.
[5]文平,郝小鹏,孙建平,等. 基于微型镓基共晶固定点的温度传感器在轨校准方法研究[J]. 计量学报, 2019, 40(4): 595-602.
Wen P, Hao X P, Sun J P, et al. On-Orbit Calibration of Temperature Sensor based on Miniature Gallium-based alloy Fixed point. Acta Metrologica Sinica, 2019, 40(4): 595-602.
[6]Burdakin A, Khlevnoy B, Samoylov M, et al. Development of Gallium and Gallium-Based Small-Size Eutectic Melting Fixed Points for Calibration Procedures on Autonomous Platforms[J]. International Journal of Thermophysics, 2009, 30(1): 20-35.
[7]Sun J P, Hao X P, Zeng F C, et al. Onsite Calibration of a Precision IPRT Based on Gallium and Gallium-Based Small-Size Eutectic Points[J]. International Journal of Thermophysics, 2017, 38(4): 47.
[8]刁福广, 蔡晋辉, 孙建平, 等. Ga-In-Sn微型共晶点相变特性研究[J]. 计量学报, 2019, 40(3): 421-426.
Diao F G, Cai J H, Sun J P, et al. Study on Phase Transition Characteristic of Mini Ga-In-Sn Eutectic Fixed Point[J]. Acta Metrologica Sinica, 2019, 40(3): 421-426.
[9]Hao X P, Sun J P, Xu C Y, et al. Miniature Fixed Points as Temperature Standards for In Situ Calibration of Temperature Sensors[J]. International Journal of Thermophysics, 2017, 38(6): 90.
[10]李利峰, 李锐, 闫小克, 等. 镓熔点温坪复现研究[J]. 计量学报, 2020, 41(4): 419-424.
Li L F, Li R, Yan X K, et al. Study on the Realization of Gallium Melting Point Plateau[J]. Acta Metrologica Sinica, 2020, 41(4): 419-424.
[11]梁基谢夫 Н П. 金属二元系相图手册[M]. 郭青蔚, 译. 北京: 化学工业出版社, 2009.
[12]朱鹏飞. 国家低温基准固定点自动复现系统的设计与实现[D]. 杭州: 中国计量大学, 2017.
[13]毛菊林,孙建平,卢小丰. 开口镓熔点装置的复现及气压修正[J]. 计量学报, 2021, 42(11): 1454-1458.
Mao J L, Sun J P, Lu X F. Reproduction and Barometric Pressure Correction of Open Gallium Melting Point Device[J].Acta Metrologica Sinica, 2021, 42(11): 1454-1458.
[14]Ancsin J. Manipulating the Melting Behavior of Metal-Metal Eutectics[J]. International Journal of Thermophysics, 2008, 29(1): 181-189.
[15]徐春媛,夏蔡娟,郝小鹏,等. 准绝热法微型镓固定点相变特性研究[J]. 计量学报, 2017, 38(1): 19-22.
Xu C Y, Xia C J, Hao X P, et al. Research on Phase Change Characteristic of Miniature Gallium Fixed-point Using Quasi-adiabatic Measurement Method[J]. Acta Metrologica Sinica, 2017, 38(1): 19-22.
[16]赵楠, 郑伟, 刘丹英. 金属-碳共晶点熔化温坪温度的确定[J]. 计测技术, 2011, 31(2): 38-40.
Zhao N, Zheng W, Liu D Y. Determination of the Melting Temperature of Metal-carbon Eutectic Fixed Point[J]. Metrology & Measurement Technology, 2011, 31(2): 38-40.
[17]Yasuki Kawamura, Tohru Nakano. Evaluation of the triple point temperature of sulfur hexafluoride and the associated uncertainty at NMIJ/AIST[J]. Metrologia, 2020, 57(1):014003.
[18]Bedford R E, Bonnier G, Maas H, et al. Recommended Values of Temperature on the International Temperature Scale of 1990 for a Selected Set of Secondary Reference Points[J]. Metrologia, 1996, 33(2): 133-154.
[19]孙建平, 邱萍, 张金涛. 微量杂质对锌凝固点影响的评估[J]. 计量学报, 2010, 31(3): 223-228.
Sun J P, Qiu P, Zhang J T, et al. The Evaluation of the Influence of Impurities on the Freezing Point of Zinc[J]. Acta Metrologica Sinica, 2010, 31(3) : 223-228.