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| Study on Phase Transition Characteristic of Mini Ga-In-Sn Eutectic Fixed Point |
| DIAO Fu-guang1,2,CAI Jin-hui2,SUN Jian-ping3,WANG Ying-wen3,GAO Kai1,YE Meng4 |
1. China Jiliang University, Hangzhou, Zhejiang 310018, China
2. National Institute of Metrology,Beijing 100029, China
3. Inner Mongolia University of Science & Technology, Baotou, Inner Mongolia 014010, China
4. Xi‘an Polytechnic University, Xi'an, Shaanxi 710048, China |
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Abstract Taking Ga-In-Sn ternary alloy as the research object, a mini Ga-In-Sn eutectic cell which can be used for on-site and on-line calibration was developed, and the effect of three-ratio for the Ga-In-Sn on phase transition temperature and temperature plateau were investigated. The results show that the plateaus of three-ratio Ga-In-Sn realization last about 1.2 h to 2 h, the reproducibility is less than 4.5 mK and combined expanded uncertainty is 9.3 mK(k=2). The average value of the phase transition temperature is 10.748 ℃ and is not affected by the ratio of Ga-In-Sn ternary alloy. Changing the melt cooling rate can change the supercooling of the mini eutectic fixed point.
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Received: 09 March 2018
Published: 19 April 2019
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2019, Vol. 40 
