Stabilization and regulation of temperature for quenching and annealing experiments with a metal wire

Abstract

Three methods are described for temperature stabilization and regulation for quenching and annealing experiments with a metal wire in a helium cryostat. All three methods use a potentiostat as a fast electronic control unit and current supply. Two methods are for temperature control for annealing an iron wire in high vacuum and for quenching the wire in liquid helium from temperatures higher than 950°C. The third method makes possible the quenching of iron wire, 1 cm above the liquid helium, from temperatures between 950 and 700°C.