Исследование Изменения Микротвердости Поверхности Циркония После Лазерной Модифицирующей Обработки

Abstract

The results of an investigation of the process of laser-induced hardening of zirconium (E110 alloy) are reported. It has been established that the laser treatment in air results in the formation of a uniformly distributed microrelief characterized by the presence of microparticles with various configurations. Overlap of the laser beam trajectories leads to the formation of a layered structure. The composition of laser-modified surface depends on the regime of processing and mostly comprises a mixture of zirconium oxides and nitrides. In addition, the formation of diffuse transition zones between the bulk metal and modified surface layer is established. The dependence of the thickness of the hardened layer on the regime of pulsed laser action is determined.

Analysis and comparison of mechanical and chemical properties of protective coatings obtained at different combinations of "target – substrate"

“…The need to replace expensive materials with cheaper, but not inferior in their protective properties, materials predetermined the development of many different methods of surface treatment: plasma, electronic, light, etc. [6,7]. One of the methods developing in this direction is ion implantation.…”

Изменение Морфологии, Структуры И Микротвердости Образцов Циркониевого Сплава В Результате Воздействия Лазерными Импульсами

“…В настоящее время известен широкий спектр технологий модификации поверхностного слоя, способных повысить эксплуатационные характеристики металлических изделий и защитить их от преждевременного износа. К таким технологиям можно отнести электрохимические, газотермические и электрофизические методы формирования защитных барьерных покрытий, поверхностно-деформационное упрочнение, термическую и лазерную обработку [4][5][6][7][8].…”