The Electrophysical Properties of the Surface of Radiation – Thermally Treatment Beryllium in a Water Medium

Abstract

The electro physical properties of the surface of metallic beryllium were studied before and after radiation-thermally treatment in a water medium at temperatures 473 ... 773K by influence of gamma quanta. On the features of the curves current-voltage characteristics it is established that radiation-thermally modification of the surface of a beryllium is accompanied by the formation of oxide structures, defects which are determined by the temperature and time of irradiation. It is shown, that the formation of continuous oxide layer with dielectric properties leads to the increase of the surface resistivity by order. It was a comparative study the kinetics of changes in the values of surface resistivity from of contact time for radiation - thermally and thermally oxidized beryllium samples. It was revealed a stimulating role of radiation at relatively low temperatures in the oxidation process. According to the AFM - surface morphology studies radiation - thermally oxidized metallic beryllium, with formation of a thin oxide film involving nanoparticles of one species of 150 nm, and the formation of a continuous oxide layer - equally spaced with different kinds of nanoparticles 400-600 nm in size.