@article {van:12 November 2000:1087-6596:606, author = "van der Tempel L.", author = "Melis G.P.", author = "Brandsma T.C.", title = "Thermal Conductivity of a Glass: I. Measurement by the Glass-Metal Contact", journal = "Glass Physics and Chemistry", volume = "26", year = "12 November 2000", abstract = "

The thermal (phonon) conductivity of glass has been measured by contacting the sample with a metal at a different uniform initial temperature. The subsequent temperature response in the metal is measured by a tiny thermocouple just underneath the (contact) surface. The coefficient of heat penetration lgr rgr c_p follows directly from the fitted asymptotic temperature jump or drop for long times. Division by the separately measured heat capacity rgr c_p yields the thermal conductivity lgr . The conductivity measurement reproducibility was sgr = 3%. The standard deviation between validation measurements and round robin test results on Pyrex glass was sgr = 5.8%, somewhat more than the accuracy sgr = 5.2% of the round robin test results. The measurement method is insensible for slight imperfections of the thermal contact and infrared radiation diffusion (photon conductivity) in a hot glass. The method has been used with minor modifications for solid and molten samples at temperatures of 50–850°C and conductivities of 0.1–25 W/(m K). The thermal (phonon) conductivity of the investigated soda-lime silicate glasses increases slightly ( sim 27–30%) with temperature from ambient up to around the glass transition.

", pages = "606-611(6)", url = "http://www.ingentaconnect.com/content/maik/gpac/2000/00000026/00000006/00297709" }