Evaluation of the heat leakage in the thermal diffusivity measurement of molten metals by a laser flash method

T. Nishi; H. Ohta; H. Shibata; Y. Waseda

doi:10.1023/B:IJOT.0000004102.55688.c7

Evaluation of the heat leakage in the thermal diffusivity measurement of molten metals by a laser flash method

T. Nishi, H. Ohta, H. Shibata, Y. Waseda

IMRAM - Division of Process and System Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Evaluation of the radiative and conductive heat loss from a molten metal sample to the cell has been made in order to obtain accurate thermal diffusivities of molten metals at high temperature with a laser flash method. The results suggest that thermal diffusivity values of molten nickel can be determined in the temperature range from 1728 to 1928 K with an uncertainty of ±3% in comparison with case considering only the effect of radiative heat loss. The usefulness of a cell for a laser flash method has been confirmed by applying simulated results to evaluate the heat leakage in the thermal diffusivity measurement of molten metals.

Original language	English
Pages (from-to)	1735-1751
Number of pages	17
Journal	International Journal of Thermophysics
Volume	24
Issue number	6
DOIs	https://doi.org/10.1023/B:IJOT.0000004102.55688.c7
Publication status	Published - 2003 Nov

Keywords

Heat loss
Laser flash method
Molten nickel
Numerical analysis
Thermal diffusivity

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10.1023/B:IJOT.0000004102.55688.c7

Cite this

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title = "Evaluation of the heat leakage in the thermal diffusivity measurement of molten metals by a laser flash method",

abstract = "Evaluation of the radiative and conductive heat loss from a molten metal sample to the cell has been made in order to obtain accurate thermal diffusivities of molten metals at high temperature with a laser flash method. The results suggest that thermal diffusivity values of molten nickel can be determined in the temperature range from 1728 to 1928 K with an uncertainty of ±3% in comparison with case considering only the effect of radiative heat loss. The usefulness of a cell for a laser flash method has been confirmed by applying simulated results to evaluate the heat leakage in the thermal diffusivity measurement of molten metals.",

keywords = "Heat loss, Laser flash method, Molten nickel, Numerical analysis, Thermal diffusivity",

author = "T. Nishi and H. Ohta and H. Shibata and Y. Waseda",

note = "Funding Information: This work is supported by Special Coordination Funds for Promoting Science and Technology (Promotion System for Intellectual Infrastructure of Research and Development, {\textquoteleft}{\textquoteleft}Research on measurement technology and reference materials for thermophysical properties of solids{\textquoteright}{\textquoteright}), Japan and a Grant-in-Aid for Scientific Research (13750683-00) of the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

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volume = "24",

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T1 - Evaluation of the heat leakage in the thermal diffusivity measurement of molten metals by a laser flash method

AU - Nishi, T.

AU - Ohta, H.

AU - Shibata, H.

AU - Waseda, Y.

N1 - Funding Information: This work is supported by Special Coordination Funds for Promoting Science and Technology (Promotion System for Intellectual Infrastructure of Research and Development, ‘‘Research on measurement technology and reference materials for thermophysical properties of solids’’), Japan and a Grant-in-Aid for Scientific Research (13750683-00) of the Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2003/11

Y1 - 2003/11

N2 - Evaluation of the radiative and conductive heat loss from a molten metal sample to the cell has been made in order to obtain accurate thermal diffusivities of molten metals at high temperature with a laser flash method. The results suggest that thermal diffusivity values of molten nickel can be determined in the temperature range from 1728 to 1928 K with an uncertainty of ±3% in comparison with case considering only the effect of radiative heat loss. The usefulness of a cell for a laser flash method has been confirmed by applying simulated results to evaluate the heat leakage in the thermal diffusivity measurement of molten metals.

AB - Evaluation of the radiative and conductive heat loss from a molten metal sample to the cell has been made in order to obtain accurate thermal diffusivities of molten metals at high temperature with a laser flash method. The results suggest that thermal diffusivity values of molten nickel can be determined in the temperature range from 1728 to 1928 K with an uncertainty of ±3% in comparison with case considering only the effect of radiative heat loss. The usefulness of a cell for a laser flash method has been confirmed by applying simulated results to evaluate the heat leakage in the thermal diffusivity measurement of molten metals.

KW - Heat loss

KW - Laser flash method

KW - Molten nickel

KW - Numerical analysis

KW - Thermal diffusivity

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JO - International Journal of Thermophysics

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Evaluation of the heat leakage in the thermal diffusivity measurement of molten metals by a laser flash method

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Keywords

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