Skip to main content
SpringerLink
Log in

Construction of Gallium Point at NMIJ

  • TEMPMEKO 2016
  • Published:
International Journal of Thermophysics Aims and scope Submit manuscript

Abstract

Two open-type gallium point cells were fabricated using ingots whose nominal purities are 7N. Measurement systems for the realization of the melting point of gallium using these cells were built. The melting point of gallium is repeatedly realized by means of the measurement systems for evaluating the repeatability. Measurements for evaluating the effect of hydrostatic pressure coming from the molten gallium existing during the melting process and the effect of gas pressure that fills the cell were also performed. Direct cell comparisons between those cells were conducted. This comparison was aimed to evaluate the consistency of each cell, especially related to the nominal purity. Direct cell comparison between the open-type and the sealed-type gallium point cell was also conducted. Chemical analysis was conducted using samples extracted from ingots used in both the newly built open-type gallium point cells, from which the effect of impurities in the ingot was evaluated.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

Similar content being viewed by others

References

  1. H. Preston-Thomas, Metrologia 27, 3 (1990)

    Article  ADS  Google Scholar 

  2. B.W. Mangum, D.D. Thornton, Metrologia 15, 201 (1979)

    Article  ADS  Google Scholar 

  3. B.W. Mangum, in Temperature: Its Measurement and Control in Science and Industry, ed. J.F. Schooley (New York, AIP, 1982), Vol. 5, pp. 299–309

  4. M. Arai, H. Sakurai, in Temperature: Its Measurement and Control in Science and Industry, ed. J. F. Schooley (New York, AIP 1992), Vol. 6, pp. 315–318

  5. T. Nakano, O. Tamura, H. Sakurai, Int. J. Thermophys. 29, 112 (2008)

    Article  ADS  Google Scholar 

  6. J. Bojkovski, M. Hiti, V. Batagelj, J. Drnovšek, Int. J. Thermophys. 29, 119 (2008)

    Article  ADS  Google Scholar 

  7. H. Preston-Thomas, P. Bloombergen, T.J. Quinn, in Supplementary Information for the International Temperature Scale of 1990, BIPM (1990)

  8. D. Ripple, B. Fellmuth, M. de Groot, Y. Hermier, K.D. Hill, P.P.M. Steur, A. Pokhodun, M. Matveyev, P. Bloembergen, in CCT Document CCT/05-08 (2005)

  9. M. Fahr, S. Rudtsch, Metrologia 46, 423 (2009)

    Article  ADS  Google Scholar 

  10. J.V. Pearce, Int. J. Thermophys. 35, 628 (2014)

    Article  ADS  Google Scholar 

  11. J. Tamba, M. Sakai, I. Kishimoto, M. Arai, Int. J. Thermophys. 29, 1749 (2008)

    Article  ADS  Google Scholar 

Download references

Author information

Author notes

  1. K. Yamazawa

    Present address: National Institute of Technology and Evaluation, Tokyo, Japan

Authors and Affiliations

  1. National Metrology Institute of Japan, AIST, Tsukuba, Japan

    J. V. Widiatmo, I. Saito & K. Yamazawa

Authors
  1. J. V. Widiatmo
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. I. Saito
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. K. Yamazawa
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to J. V. Widiatmo.

Additional information

Selected Papers of the 13th International Symposium on Temperature, Humidity, Moisture and Thermal Measurements in Industry and Science.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Widiatmo, J.V., Saito, I. & Yamazawa, K. Construction of Gallium Point at NMIJ. Int J Thermophys 38, 42 (2017). https://doi.org/10.1007/s10765-016-2172-8

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s10765-016-2172-8

Keywords

Search

Navigation