Structure of Multi-Element Coatings Before and After Exposure to Laser Radiation

Abstract

It is shown in this work that the effect of laser action on nanostructured coatings can be quite diverse. In this case, the decisive role is played by the initial structure of the coating, which sets the mechanism and direction of its transformation under external, including laser, influences. It is shown that for a CrMnSiCuFeAlTi coating in an argon atmosphere, the friction coefficient after laser treatment decreases, while the microhardness increases. We associate the first effect with a decrease in the roughness of the coating when it is melted by a laser beam. The second effect is due to the formation of the dislocation structure of the coating upon sharp heatingcooling.

Microhardness and wear resistance of a high-entropy coating FeCrNiTiZrAl

“…However, later it was shown that simple structures do not always arise, but also Laves phases and several other phases are formed [4][5][6][7][8][9]. This is especially evident in equiatomic structures obtained by mechanical alloying and magnetron sputtering of targets [10][11][12].…”

Generation of Multifunctional Oxide Coatings on Surface of Val10 Alloy in a Polysilicate Solution

“…Один из перспективных способов упрочнения алюминия и алюминиевых сплавов -это легирование поверхностного слоя другими металлами (Ni, Fe, Co, Cr и др.) и неметаллами (B, Si) с помощью импульсного лазерного воздействия [8][9][10]. Обычно легирующие компоненты представляют из себя порошок, из которого добавлением связующего делают обмазку, наносимую на поверхность изделия и впоследствии обрабатываемую лазером [11].…”