Přejít k obsahu


Teplotní odolnost PVD vrstev vůči laserovému povrchovému ohřevu

Citace: [] BENEŠ, P., SOSNOVÁ, M., MARTAN, J., KŘÍŽ, A., CHMELÍČKOVÁ, H. Teplotní odolnost PVD vrstev vůči laserovému povrchovému ohřevu. In Vrstvy a povlaky 2007. Trenčín: DigitaL Graphic, 2007. s. 13-18. ISBN: 978-80-969310-4-0
Druh: STAŤ VE SBORNÍKU
Jazyk publikace: cze
Anglický název: Thermal resistance of PVD coatings to laser surface heating
Rok vydání: 2007
Místo konání: Trenčín
Název zdroje: DigitaL Graphic
Autoři: Petr Beneš , Martina Sosnová , Jiří Martan , Antonín Kříž , Hana Chmelíčková
Abstrakt CZ: Laser beam of the infrared pulsed Nd:YAG laser was used to thermal degradation of coating deposited on the steel substrates CSN 12 050. Some widely used thin PVD coatings such TiN, TiAlN, TiAlSiN and CrAlSiN were subjected to thermal degradation. Processing parameters such as pulse energy, pulse length and frequency were optimized in many experiments to achieve the sufficient surface energy density to melting without vaporization of the material. Multimode beam diameters about some millimetres were computed and adjusted in the suitable distance from focus plane. High laser power re-melting decreases coating`s porosity, increases adhesion to substrate material. In case of high laser energy gas vapours escape from basic material and cause fissures, re-melted surfaces have to be carefully controlled. New approach to evaluation of the quality surface structure was realized by laser confocal microscopy.
Abstrakt EN: Laser beam of the infrared pulsed Nd:YAG laser was used to thermal degradation of coating deposited on the steel substrates CSN 12 050. Some widely used thin PVD coatings such TiN, TiAlN, TiAlSiN and CrAlSiN were subjected to thermal degradation. Processing parameters such as pulse energy, pulse length and frequency were optimized in many experiments to achieve the sufficient surface energy density to melting without vaporization of the material. Multimode beam diameters about some millimetres were computed and adjusted in the suitable distance from focus plane. High laser power re-melting decreases coating`s porosity, increases adhesion to substrate material. In case of high laser energy gas vapours escape from basic material and cause fissures, re-melted surfaces have to be carefully controlled. New approach to evaluation of the quality surface structure was realized by laser confocal microscopy.
Klíčová slova

Zpět

Patička