IMPROVEMENT OF TECHNICAL AND OPERATIONAL CHARACTERISTICS OF DEVICES WITH OPTICAL ELEMENTS BY PRELIMINARY ELECTRON BEAM TREATMENT OF THEIR SURFACE
- 1 Department of Electrotechnical Systems, Cherkassy State Technological University, Ukraine
- 2 Department of Physics, Cherkassy State Technological University, Ukraine
- 3 Faculty of instrument-making, National Technical University of Ukraine "Kiev Polytechnic Institute", Ukraine
- 4 Department of organization of technogenic-prevention work and health safety, Cherkassy Institute of Fire Safety named after Heroes of Chornobyl of National University of Civil Protection of Ukraine , Ukraine
Abstract
The results of experimental studies of the influence of electron beam parameters (density of heat action, the speed of movement) on the properties of the surface layers of the elements of optical ceramics (changes in the structure of the material through the thickness of the element, the amount of surface microhardness, values of residual thermal stresses in the layers, the thickness of the hardened layers, their stability to external thermal and mechanical stresses) are. The optimum range of parameters of the beam, within which there is improvement in the properties of the surface layers of the optical elements, which leads to the increase of the basic technical-operational characteristics of devices based on (reliability, lifetime) in the conditions of use of devices with the influence of external-heat are established.