公开(公告)号：US09879355B2

公开(公告)日：2018-01-30

申请号：US14377503

申请日：2013-02-11

Applicant: MECAPROTEC INDUSTRIES

Inventor： Pierre Bares ,  Celine Gazeau ,  Cedric Stephan ,  David Pedelmas ,  Claude Rossignol ,  Sylvain Bruet ,  Olivier Brucelle ,  Paul Dedieu ,  Philippe Combes ,  Laurent Arurault ,  Viviane Turq ,  Jean-Jacques Rousse ,  Kevin Klepman

IPC: C25D11/08 ,  C25D11/02 ,  C25D11/16 ,  C25D11/24 ,  C25D11/38

CPC classification number: C25D11/024 ,  C25D11/08 ,  C25D11/16 ,  C25D11/246 ,  C25D11/38

Abstract: A method for anodizing a part made of aluminum or an aluminum alloy by immersing the part in an aqueous bath essentially comprising sulfuric acid at a concentration of 150 to 250 g/L and at a temperature of 5 to 25° C. A DC voltage according to a voltage profile comprising a voltage increased at a rate of 1 to 32 V/min is applied to the part. The voltage is maintained at a plateau voltage value of 12 to 20 V for a duration sufficient for obtaining, at the surface of the part, an anode layer having a thickness of 3 to 7 μm and/or a layer weight of 20 to 150 mg/dm2.