Microsecond Laser Polarimetry for Emissivity Measurements on Liquid Metals at High Temperatures—Application to Tantalum
Tóm tắt
The aim of this work was to determine accurate and reliable thermophysical properties of liquid tantalum from melting up to temperatures of 5000 K. Temperature measurements on pulse-heated liquid metal samples reported by different authors have always been performed under the assumption of a constant emissivity over the whole liquid range because of the lack of data for liquid metals. The uncertainty in temperature measurement is reduced in this work by the direct measurement of emissivity during the experiments. The emissivity measurements are performed by linking a laser polarimetry technique with the established method for performing high speed measurements on liquid tantalum samples at high temperatures during microsecond pulse-heating experiments. A set of improved thermophysical properties for liquid tantalum, such as temperature dependences of normal spectral emissivity at 684.5 nm, heat capacity, enthalpy, electrical resistivity, thermal diffusivity, and thermal conductivity, was obtained.
Tài liệu tham khảo
citation_journal_title=Metrologia; citation_author=P. B. Coates; citation_volume=17; citation_publication_date=1981; citation_pages=103; citation_id=CR1
citation_journal_title=High Temp. Sci.; citation_author=P. C. Nordine; citation_volume=21; citation_publication_date=1986; citation_pages=97; citation_id=CR2
citation_journal_title=Temperature, Its Measurement and Control in Science and Industry; citation_author=M. A. Pellerin, B. K. Tsai, D. P. DeWitt, G. J. Dall; citation_volume=6; citation_publication_date=1992; citation_pages=871; citation_id=CR3
citation_journal_title=J. Res. Natl. Bur. Stand. (U.S.); citation_author=A. Cezairliyan, M. S. Morse, H. A. Berman, C. W. Beckett; citation_volume=74A; citation_publication_date=1970; citation_pages=65; citation_id=CR4
citation_journal_title=J. Res. Natl. Bur. Stand. (U.S.).; citation_author=A. Cezairliyan; citation_volume=75C; citation_publication_date=1971; citation_pages=7; citation_id=CR5
citation_journal_title=Metrologia; citation_author=A. Cezairliyan, F. Righini; citation_volume=33; citation_publication_date=1996; citation_pages=299; citation_id=CR6
citation_journal_title=Int. J. Thermophys.; citation_author=E. Kaschnitz, A. Cezairliyan; citation_volume=17; citation_publication_date=1996; citation_pages=1069; citation_id=CR7
citation_journal_title=Int. J. Thermophys.; citation_author=A. Cezairliyan, s. Krishnan, J. L. McClure; citation_volume=17; citation_publication_date=1996; citation_pages=1455; citation_id=CR8
citation_journal_title=Rev. Sci. Instrum.; citation_author=R. M. Azzam, E. Masetti, I. M. Elminyawi, A. M. El-Saba; citation_volume=59; citation_publication_date=1988; citation_pages=84; citation_id=CR9
citation_journal_title=Opt. Acta; citation_author=R. M. A. Azzam; citation_volume=29; citation_publication_date=1982; citation_pages=685; citation_id=CR10
citation_journal_title=J. Opt. Soc. Am.; citation_author=S. Krishnan; citation_volume=9; citation_publication_date=1992; citation_pages=1615; citation_id=CR11
citation_journal_title=Int. J. Thermophys.; citation_author=A. Seifter, F. Sachsenhofer, G. Pottlacher; citation_volume=23; citation_publication_date=2002; citation_pages=1267; citation_id=CR12
citation_journal_title=Int. J. Thermophys.; citation_author=W. Obendrauf, E. Kaschnitz, G. Pottlacher, H. Jäger; citation_volume=14; citation_publication_date=1993; citation_pages=417; citation_id=CR13
citation_journal_title=Int. J. Thermophys.; citation_author=G. R. Gathers; citation_volume=4; citation_publication_date=1983; citation_pages=149; citation_id=CR14
citation_journal_title=High Temp.-High Press.; citation_author=P. B. Coates; citation_volume=20; citation_publication_date=1988; citation_pages=433; citation_id=CR15
citation_journal_title=J. Phys. E: Sci. Instum.; citation_author=J. L. Gardner, T. P. Jones; citation_volume=13; citation_publication_date=1980; citation_pages=306; citation_id=CR16
citation_journal_title=High Temp. High Press.; citation_author=J. P. Hiernaut, R. Beukers, W. Heinz, R. Selfslag, M. Hoch, R. W. Ohse; citation_volume=18; citation_publication_date=1986; citation_pages=617; citation_id=CR17
citation_journal_title=Int. J. Thermophys.; citation_author=C. Ronchi, R. Beukers, H. Heinz, J. P. Hiernaut, R. Selfslag; citation_volume=13; citation_publication_date=1992; citation_pages=107; citation_id=CR18
citation_journal_title=Int. J. Thermophys.; citation_author=G. R. Gathers; citation_volume=13; citation_publication_date=1992; citation_pages=173; citation_id=CR19
citation_journal_title=Int. J. Thermophys.; citation_author=E. Kaschnitz, G. Pottlacher, H. Jäger; citation_volume=13; citation_publication_date=1992; citation_pages=699; citation_id=CR20
citation_journal_title=High Temp.-High Press.; citation_author=A. Cezairliyan, J. L. McClure, L. Coslovi, F. Righini, A. Rosso; citation_volume=8; citation_publication_date=1976; citation_pages=103; citation_id=CR21
citation_journal_title=Int. J. Thermophys.; citation_author=H. Jäger, W. Neff, G. Pottlacher; citation_volume=13; citation_publication_date=1992; citation_pages=83; citation_id=CR22
K. C. Mills, B. J. Monaghan, and B. J. Keene, NPL- Report, CMMT(A) 53 (1997).
citation_title=Proceedings of Tempmeko 2001; citation_publication_date=2001; citation_id=CR24; citation_author=F. Righini; citation_author=J. Spisiak; citation_author=G. C. Bussolino; citation_publisher=VDE Verlag GMBH