Plasma Electrolytic Oxidation treatment (PEO) is of great interest due to its capability to produce a thick ceramic coating with a great adhesion and very high corrosion and wear resistance on metallic components. Mainly characteristics of these coatings are a high porosity in the outer part of the coating and the opportunity to incorporate into the coating particles coming from the electrolyte. The aim of this work was to realize on an aluminum substrate a PEO coating with an homogeneous distribution of phosphors (in the form of YAG:Ce particles) in order to ensure good thermal conductivity and photoluminescence. This is important in application as LED where it is required a big heat exchange. Moreover, it was evaluated the effect of pulsed current compared to direct current on particles distribution.
Development of YAG:Ce containing PEO coatings on aluminum alloys
Pezzato L.
;
2021
Abstract
Plasma Electrolytic Oxidation treatment (PEO) is of great interest due to its capability to produce a thick ceramic coating with a great adhesion and very high corrosion and wear resistance on metallic components. Mainly characteristics of these coatings are a high porosity in the outer part of the coating and the opportunity to incorporate into the coating particles coming from the electrolyte. The aim of this work was to realize on an aluminum substrate a PEO coating with an homogeneous distribution of phosphors (in the form of YAG:Ce particles) in order to ensure good thermal conductivity and photoluminescence. This is important in application as LED where it is required a big heat exchange. Moreover, it was evaluated the effect of pulsed current compared to direct current on particles distribution.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
