caa a22 4500 465755690 CHVBK 20180323111846.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF01184332 doi (NATIONALLICENCE)springer-10.1007/BF01184332 Thermal expansion of tungsten in the range 1500-3600 K by a transient interferometric technique [Elektronische Daten] [A. Miiller, A. Cezairliyan] The linear thermal expansion of tungsten has been measured in the temperature range 1500-3600 K by means of a transient (subsecond) interferometric technique. The tungsten selected for these measurements was the standard reference material SRM 737 (a standard for thermal expansion measurements at temperatures up to 1800 K). The basic method involved rapidly heating the specimen from room temperature up to and through the temperature range of interest in less than 1 s by passing an electrical current pulse through it and simultaneously measuring the specimen temperature by means of a high-speed photoelectric pyrometer and the shift in the fringe pattern produced by a Michelson-type interferometer. The linear thermal expansion was determined from the cumulative shift corresponding to each measured temperature. The results for tungsten may be expressed by the relation $$\begin{gathered} (l - l_0 )/l_0 = 1.3896 \times 10^{ - 3} - 8.2797 \times 10^{ - 7} T + 4.0557 \times 10^{ - 9} T^2 \hfill \\ - 1.2164 \times 10^{ - 12} T^3 + 1.7034 \times 10^{ - 16} T^4 \hfill \\ \end{gathered} $$ whereT is in K andl 0 is the specimen length at 20°C. The maximum error in the reported values of thermal expansion is estimated to be about 1% at 2000 K and approximately 2% at 3600 K. Plenum Publishing Corporation, 1990 dilatometry nationallicence high temperature nationallicence interferometry nationallicence pulse heating nationallicence thermal expansion nationallicence tungsten nationallicence Miiller A. Thermophysics Division, National Institute of Standards and Technology, 20899, Gaithersburg, Maryland, USA aut Cezairliyan A. Thermophysics Division, National Institute of Standards and Technology, 20899, Gaithersburg, Maryland, USA aut International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/4(1990-07-01), 619-628 0195-928X 11:4<619 1990 11 10765 https://doi.org/10.1007/BF01184332 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01184332 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Miiller A. Thermophysics Division, National Institute of Standards and Technology, 20899, Gaithersburg, Maryland, USA aut NATIONALLICENCE 700 1- Cezairliyan A. Thermophysics Division, National Institute of Standards and Technology, 20899, Gaithersburg, Maryland, USA aut NATIONALLICENCE 773 0- International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/4(1990-07-01), 619-628 0195-928X 11:4<619 1990 11 10765 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer