Gas-flame heating equipment providing temperatures up to 2600 K for the four-circle diffractometer

Gas-flame specimen-heating equipment has been designed and constructed for structural investigations of materials which are not chemically affected by exposure to the combustion gas. The heating equipment is attachable to any standard four-circle diffractometer, preserving all the functions of the diffractometer, and provides specimen temperatures up to 2600 K. The ventilation of the hot exhaust gas and the use of a small flame prevent the elevation of temperature at any part of the diffractometer. The maintenance of high temperatures is controlled by constant gas flow and the temperature is stable within ± 15 K at temperatures between 1800 and 2600 K. The intensity data of an α-Al₂O₃ single-crystal were successfully collected at 2173 K.