Abstract
A new heating stage has been constructed for high temperature transmission electron microscopy (HTTEM) to investigate the phase transformation of silicate minerals. A furnace of tungsten resistance coils protected by threefold thermal shields is attached to a double-tilting side-entry stage and specimens can be tilted up to 10 degrees in both X- and Y-axes. This stage is workable up to 1300°C. To record instantaneous changes of the fine textures during transformation, an image processing system with image intensifier is attached to the HTTEM. The present HTTEM system has been successfully applied to the phase transition between high- and low-clinoenstatite at 1100–1150°C.
