Zn-Se alloys have potential applications in blue light emitting diodes and blue diode lasers, as well as in white LEDs and infrared lenses. Se-In alloys have potential applications in solar cells due to their energy band gap, which is close to the optimum range for solar energy conversion. The thermo-physical properties of these two types of alloys have been investigated to further their applicability in industrial applications. The thermal conductivity, ...
The effective thermal conductivity and thermal diffusivity of polymer composites consisting of phenolformaldehyde matrix and oil palm empty fruit bunch (OPEFB) fibers were determined using the transient plane source method. The polymer composites were treated with one of alkali, silanol, or acetic acid to determine the effects of each treatment on the thermo-physical properties of the composites. The effect of temperature on these properties was also evaluated. It was determined ...
The frictional heat produced by the 1999 Chi-Chi, Taiwan earthquake was estimated by identifying a temperature anomaly that is present in a borehole drilled through a large slip region of the fault. The temperature rise was estimated by solving an equation representing one-dimensional thermal conduction in an infinite medium. In order to solve this equation, the thermal diffusivity of fracture zone materials were measured using the transient plane source technique. It ...
Perlite was added to mortar in order to determine if the resulting composite was more thermally insulating than conventional shotcrete. This study was conducted to determine if shotcrete in which sand has been replaced by perlite can potentially be used as thermal insulation for underground mines. It was found that the addition of perlite decreased the weight of the shotcrete, as well as the thermal conductivity and diffusivity, but decreased ...
Zr-Cu-Al metallic glasses were formulated with differing compositions to determine their thermophysical properties. It was determined that by decreasing the zirconium content of the metallic glass, the thermal conductivity can be increased. The maximum value of thermal conductivity was found for the metallic glass with a composition of Zr:Cu:Al = 50:39.3:10.7 (at. %). It was found that although the metallic glasses did not crystallize with heat treatment below Tg, they did ...
