Analysis of Laser Treated Copper Surfaces

Abstract

Abstract

Determination of Preliminary Operating Intervals of the Power Density for Laser Technological Processes on Copper Samples

“…Therefore, there is a necessity for a comprehensive understanding of the physicochemical and phase changes that occur during the interaction between laser beam and various material types. Presently, laser surface treatment stands as a focal point of cutting-edge scientific research due to its application in diverse sectors such as aeronautics, mechanical engineering, medicine, and other pivotal domains shaping modern economic development worldwide [2] [3].…”

“…The use of copper in several industries, such as mechanical engineering, electronics, aircraft construction and aeronautics, is increasing as copper-based components are used in personal computers, cellular telephones, and the expansion of telecommunications [15] [3]. Modern laser processing of copper has its inherent problems due to its high reflectivity and very high thermal conductivity, and today it faces several challenges [2].…”

Wetting properties, recrystallization phenomena and interfacial reactions between laser treated Cu substrate and SAC305 solder

“…Microstructure of copper surface layer was studied after laser irradiation [6,7,8] and it was found, that columnar crystals formed in the molten pool perpendicular to the surface and new preferential orientation distribution is formed in the vicinity of surface layer as a consequence of temperature gradient in the molten pool. Theoretical calculation also revealed [6,7,9,10] that surface energy change on the irradiated substrate material regularly depends on the variation of applied laser power, which improve the mutual wettability between the solder alloy and the irradiated copper sheet.…”