Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-25T05:48:45.633Z Has data issue: false hasContentIssue false
  • English
  • Français

Surface modification of W-Ti coatings induced by TEA CO2 laser beam

Published online by Cambridge University Press:  18 January 2002

SUZANA PETROVIĆ ,
B. GAKOVIĆ ,
M. TRTICA  and
T. NENADOVIĆ
SUZANA PETROVIĆ
Affiliation:
Institute of Nuclear Sciences “Vinča”, P.O. Box 522, 11001 Belgrade, Yugoslavia
B. GAKOVIĆ
Affiliation:
Institute of Nuclear Sciences “Vinča”, P.O. Box 522, 11001 Belgrade, Yugoslavia
M. TRTICA
Affiliation:
Institute of Nuclear Sciences “Vinča”, P.O. Box 522, 11001 Belgrade, Yugoslavia
T. NENADOVIĆ
Affiliation:
Institute of Nuclear Sciences “Vinča”, P.O. Box 522, 11001 Belgrade, Yugoslavia
Get access Rights & Permissions [Opens in a new window]

Abstract

In this work, the interaction of a transversely excited atmospheric (TEA) CO2 laser with tungsten–titanium (W-Ti) alloy deposited on austenitic stainless steel is considered. The W-Ti alloy as a refractory material possesses very good physicochemical characteristics such as thermochemical stability and high melting temperature. Studying of interactions of different energetic particles or laser beams with W-Ti coatings has both application and fundamental importance.

The morphological features of the W-Ti coating, deposited on austenitic stainless steel AISI 316, induced by a TEA CO2 laser after multipulse cumulative laser action, have been considered. The laser pulses with tail (FWHM = 120 ns, tail = 2 μs) and free-tail pulses (FWHM = 80 ns) have been employed. Laser pulses used in the experiment had equal peak power density I = 120 MWcm−2. For the given peak power density, excessive surface changes on the coating were registered. From direct observation on a microscopic scale (OM, SEM), it can be concluded that W-Ti coatings show different behavior under laser irradiation with various temporal pulse shapes.

Type
Research Article
Information
Laser and Particle Beams , Volume 19 , Issue 2 , April 2001 , pp. 195 - 199
Copyright
© 2001 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)