每年出版 4 期
ISSN 打印: 1093-3611
ISSN 在线: 1940-4360
Indexed in
INFLUENCE OF NITROGEN LASER BEAM ON THIN-FILM COATINGS
摘要
This paper presents the results of experimental and theoretical studies of the influence of a nanosecond laser beam of UV band (λ = 337 nm) with energy of up to 1 mJ on a surface of thin (0.5−5 µm) coatings (Ti, TiN, Al−Si, Al−Si−N) deposited on a glass substrate by a vacuum-arc method. Based on the data obtained, the dependences of the effect of explosive spark formation on the thickness of a coating, its properties, and the conditions of laser influence in an atmosphere of different gases are presented. The mathematical model of the processes occurring in a coating/substrate system exposed to laser irradiation is described; the value of the thickness of a coating at which its destruction occurs with intense sparking is defined.