DEVICE FOR MEASURING THE JOINT surface tension and work function systems involving liquid-metal components with a high saturated vapor METALS AND ALLOYS

摘要

FIELD: measuring equipment.;SUBSTANCE: invention belongs to devices for research of temperature and concentration dependences of superficial properties of metal melts with participation of components with high elasticity of steam and can find wide application in research practice on physics, physical chemistry, materials science, metallurgy of fusible metals, factory laboratories etc. The combined device for joint determination of temperature and concentration dependences of superficial tension and work of electron output of liquid-metal systems with participation of components with high elasticity of saturated steam contains the main tank with cups-substrates for formation of big drops of studied liquid alloys. Also the device contains electrodes for fixing of photoemission currents, plane-parallel optical windows for photography of a drop and illumination of its surface from above with monochromatised beams of light. Thus a "comb" is tightly attached to the casing of the tank in vacuum manner from necessary quantity of vacuumised ampoules with the hemispherical glass partitions blocked in them with dosed batch weights of the second component with the increased elasticity of saturated steam according to the plan of experiment.;EFFECT: complete elimination of free and uncontrollable mass transfer of a volatile component in a device, exact fixing of structures of each of alloys in investigated double and (or) triple systems with participation of volatile components, repeated reduction or complete elimination (depending on specifically studied systems) of extent of dustiness of optical windows and electrodes of a measuring compartment of the device at measurements of emission properties of studied alloys and work of electron output, expansion of a temperature range of measurements of PN and RVE at the expense of reduction of time and intensity of influence of volatile components vapours of studied alloys on internal walls of the device, increase in durability and the operational period of the device without loss of the main characteristics, and also possibility of reuse of the device for studying of other systems at the expense of repeated reduction of the general time of influence of vapours of aggressive volatile components of studied alloys on a material, of which the device is made.;2 dwg