Abstract
In situ x-ray data on molar volumes of periclase and tungsten have been collected over the temperature range from 300 K to melting. We determine the temperature by combining the technique of spectroradiometry and electrical resistance wire heating. The thermal expansion (α) of periclase between 300 and 3100 K is given by α=2.6025 10−5+1.3535 10−8 T+6.5687 10−3 T−1−1.8281 T−2.
For tungsten, we have (300 to 3600 K) α=7.862 10−6+6.392 10−9 T.
The data at 298 K for periclase is: molar volume 11.246 (0.031) cm3, α=3.15 (0.07) 10−5 K−1, and for tungsten: molar volume 9.55 cm3, α=9.77 (10.08) 10−6 K−1.
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Received: July 18, 1996 / Revised, accepted: February 14, 1997
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Dubrovinsky, L., Saxena, S. Thermal Expansion of Periclase (MgO) and Tungsten (W) to Melting Temperatures. Phys Chem Min 24, 547–550 (1997). https://doi.org/10.1007/s002690050070
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DOI: https://doi.org/10.1007/s002690050070