二酸化バナジウム粉体の応力下における相転移温度測定

抄録

This paper describes feasibility of switchable heat storage device, that can switch the thermophysical properties, using solid-solid phase-change thermal storage materials (PCMs). Solid-solid PCMs have some merits compared to solid-liquid PCMs: high thermal conductivity and unnecessary of container. Therefore, the solid-solid PCMs are suitable for micro scale thermal control device. Vanadium dioxide (VO₂) is one of the solid-solid PCMs. In this study, the electrical resistance of the VO₂ powder was measured under compressive pressure to estimate the phase transition temperature (PTT). As the result, onset PTT and end PTT decreased 2.1°C and 3.5°C under compressive pressure, respectively.