%0 journal article
%@ 0167-577X
%A Matykina, E., Arrabal, R., Pardo, A., Mohedano, M., Mingo, B., Rodriguez, I., Gonzalez, J.

%D 2014
%J Materials Letters

%P 13-16 
%R doi:10.1016/j.matlet.2014.04.077
%T Energy-efficient PEO process of aluminium alloys
%U https://doi.org/10.1016/j.matlet.2014.04.077
 
%X The influence of pre-anodising in sulphuric and phosphoric acids on energy efficiency of voltage-controlled PEO process of three commercial wrought and cast aluminium alloys (AA1050, AA6082 and A356) has been investigated. The precursor anodic porous films enable up to 57% energy savings during PEO and produce ~35–40% increase of the coating microhardness compared with direct PEO. Total specific energy consumption values of 2.5–2.7 kW h m−2 µm−1 and 3.1–3.8 kW h m−2 µm−1 were achieved using phosphoric and sulphuric acid-formed precursors, respectively.