Application of Laser-Pulse Technique in Determining Thermal Conductivity of Molten Oxides at High Temperature

The supreme importance of thermal properties such as thermal conductivity or diffusivity of various inorganic materials at high temperature has recently been well-recognized and there have been several attempts on thermal conductivity measurements for relatively low conductive materials such as oxides and nitrides at high temperature.However, their accuracy is often not sufficient to allow quantitative discussion, mainly arising from experimental difficulties.For this purpose, the laser-pulse technique proposed in early 1960 has received much attention.Although some advantages of laser-pulse technique are strongly suggested, major progress has been obtained only in the last few years.An attempt has been made in this paper to review current information on the principle and new data processing for the laser-pulse technique including some selected examples of its application to determining thermal conductivity of oxide melts at high temperature.The relevant significant theoretical aspect on the radiative heat transfer coefficient is discussed, in order to facilitate the understanding of the present status of fundamentals and powerful link between physical constant such as the reflective index of sample materials and the required formulae for determining thermal conductivity of high temperature melts by this technique.The laser-pulse calorimetry for high temperature materials has also been described for convenience of further investigation by this relatively new method of the laser-pulse technique.

Abstract licence: CC BY

5 more references, whose wording the paper’s licence keeps private.

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.