1.Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University,Beijing 100084, China
2.National Institute of Metrology, Beijing 100013, China
3.College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology, Beijing 100124, China
Abstract:A Re-C cell of hybrid structure was constructed by direct eutectic filling methods,and realized with the HTFP experimental system.The Re-C cell was evaluated according to CCT-WG5-WP2,which mainly focus on construction of HTFP cells for definitive thermodynamic temperature measurements,and the results shows that the short term repeatability of the melting temperature was 3 mK,and the difference between the start and end of melting temperature was 198mK,which were both better than the CCT reference values.
[1]Yamada Y,Wang Y,Sasajima N.Metal carbide-carbon peritectic systems as high-temperature fixed points in thermometry [J].Metrologia,2006,43: 23-27.
[2]Woolliams E R,Machin G,Lowe D H,et al.Metal(carbide)-carbon eutectics for thermometry and radiometry: a review of the first seven years [J].Metrologia,2006,43:R11.
[3]Lowe D,Machin G.Development of metal-carbon eutectic blackbody cavities to 2500 degrees C at NPL [C]∥Tempmeko 2001.2002:519-524.
[4]Anhalt K,Hartmann J,Lowe D,et al.Thermodynamic temperature determinations of Co-C,Pd-C,Pt-C and Ru-C eutectic fixed-point cells [J].Metrologia,2006,43: 78-83.
[5]Machin G,Dong W,Martin M J,et al.A Comparison of the ITS-90 Among NPL,NIM,and CEM,Above the Silver Point Using High-Temperature Fixed Points[J]. International Journal of Thermophysics,2010,31:1466-1476.
[6]Yamada Y,Duan Y,Ballico M,et al.Measurement of Rh-C,Pt-C and Ru-C eutectic points by four national metrology institutes [J].Metrologia,2001,38:203-211.
[7]Sasajima N,Yoon H W,Gibson C E,et al.The NIST eutectic project: Construction of Co-C,Pt-C and Re-C fixed-point cells and their comparison with the NMIJ [J].Metrologia,2006,43:109-114.
[8]Battuello M,Florio M,Sadli M,et al.Investigations on Two Co-C Fixed-Point Cells Prepared at INRIM and LNE-Cnam [J].International Journal of Thermophysics,2011,32:1732-1743.
[9]Sadli M, Pehlivan O, Bourson F,et al.Collaboration Between UME and LNE-INM on Co-C Eutectic Fixed-Point Construction and Characterization [J].International Journal of Thermophysics,2009,30:36-46.
[10]Khlevnoy B B,Yamada Y,Grigoryeva I A,et al.Comparison of Re-C Fixed-Point Cells and Their T(90)Temperatures Between NMIJ and VNIIOFI [J].International Journal of Thermophysics,2011,32:1753-1762.
[11]Machin G, Bloembergen P, Anhalt K, et al. Practical Implementation of the Mise en Pratique for the Definition of the Kelvin Above the Silver Point [J].International Journal of Thermophysics,2010,31:1779-1788.