C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
C25D 5/38 (2006.01) C23C 18/18 (2006.01) C23F 1/26 (2006.01) C23G 1/10 (2006.01)
Patent
CA 2628623
The invention relates to a method for the pre-treatment of titanium components for the subsequent coating thereof. Said method comprises at least the following steps: a) the component is etched in an acid solution containing fluoride and nitric acid (HNO3); b) the etched component is actively pickled in a solution containing at least sodium nitrate (NaNO3) and tetrafluoroboric acid (HBF4); and c) the actively pickled component is activated in an acid- containing bath or an acid bath containing nickel.
L'invention concerne un procédé de prétraitement de composants en titane en vue de leur revêtement consécutif. Ce procédé comprend au moins les opérations suivantes: a) attaque du composant dans une solution acide et fluorée contenant de l'acide de salpêtre (HNO3); b) mordançage actif du composant attaqué dans une solution contenant au moins du nitrate de sodium (NaNO3) et de l'acide tétrafluorborique (HBF4); c) activation du composant mordancé activement dans un bain contenant un acide ou dans un bain acide contenant du nickel.
Catalan-Asenjo Helena
Linska Josef
Scheid Michael
Schmidt Matthias
Marks & Clerk
Mtu Aero Engines Gmbh
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