| dc.description.abstract | The interactions with CO laser, ruby and Nd:Yag lasers on some metallic, composite and ceramic materials are made. Metallic samples of coldly pressed iron and BiFeO3, were used, synthesized in the respective laboratory conditions. For iron cold consolidation, the Fe powder with average size - 63μm was used with the pressing pressure of 0.5 to 1.0 GPa, the consolidation samples reaching the density from 75% to 85% of theoretically predicted value. BiFeO3 samples were synthesized by the method that in the simplest manner ensures production of relatively pure BiFeO3 phase. The previous grinding of equimolar quantities of initial oxides in the conditions of high mass relation of dense BiFeO3 sample, through the reaction sintering at the temperature considerably lower than the temperature where larger evaporation of Bi-oxide occurs and a partial forming of the phase with Fe oxide. Beside the well known types for the material processing (ruby, Nd:YAG, Co2), the CO laser with the controlled electron beam EBCD laser was used for researches with cryogen cooled installation of active volume 1dm3. Besides those as representative materials we present some other metallic and ceramic materials, including the problems and predicted tasks that involve them. | sr |
