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|Title:||The ZrC-C eutectic structure and melting behaviour: a high-temperature radiance spectroscopy study|
|Authors:||MANARA Dario; JACKSON Heather; PERINETTI-CASONI Carlo; BOBORIDIS Konstantinos; WELLAND Mike; LUZZI L.; OSSI P.m.; LEE W.e.|
|Citation:||JOURNAL OF THE EUROPEAN CERAMIC SOCIETY vol. 33 no. 7 p. 1349 - 1361|
|Publisher:||ELSEVIER SCI LTD|
|Type:||Articles in periodicals and books|
|Abstract:||A fast spectrograph has been employed for radiance measurements of zirconium carbide samples laser - heated to very high temperature, for compositions 0.7 £ C / Zr £ 1.86 and in a spectral range 0.550 μm £ l £ 0.900 μm. The ZrC-C eutectic temperature (recently established at 3155 ± 1 K) has been taken as the radiance reference. The measured normal spectral emissivity (NSE) el of solid zirconium carbide is close to 0.6 at 650 nm, in agreement with previous literature. Its hightemperature behaviour, value in the liquid, carbon-content and wavelength dependences in the visiblenear infrared range have been determined here for the first time. Liquid zirconium carbide seems to interact with electromagnetic radiation in a more metallic way than the solid. A considerable NSE increase has been observed at increasing carbon content, which can be interpreted on the basis of preferential growth along the "c" plane of the carbon lamellae in the eutectic structure.|
|JRC Directorate:||Nuclear Safety and Security|
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