Thermal barrier coatings produced by laser cladding
K. M. JASIM, R. D. RAWLINGS, D. R. F. WEST
JOURNAL OF MATERIALS SCIENCE
abstract:A 2 kW CO2 laser has been used to clad a mild steel substrate with two different ceramic coatings, namely yttria partially stabilized zirconia (8wt% YPSZ) or a mixture of YPSZ and pure alumina powder. A range of laser processing parameters has been investigated. Results have been obtained showing the possibility of using the laser beam for producing a clad layer of thermal barrier coating with different topography depending on the processing conditions.
keywords:Thermal barrier; CO laser; laser processing; clad layer; wt YPSZ
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