C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
C25D 5/02 (2006.01) C25D 5/00 (2006.01) C25D 17/10 (2006.01) C25D 17/12 (2006.01) C25D 17/16 (2006.01) C25D 21/12 (2006.01) H05K 3/24 (2006.01)
Patent
CA 2449807
In order to even out the electrolytic treatment of workpieces 9 made of electrically non-conductive material and having a very thin base metallising 6, 8, a device is employed in a manner according to the invention comprising means for bringing treatment liquid into contact with the workpieces 9, means 10 for electrical contacting of the workpieces 9 at contacting sites and counterelectrodes 5.x which are so arranged that the workpieces 9 may be arranged opposing them, whereby the counterelectrodes 5.x are each subdivided into at least two electrode segments 13.x such that at least one contact-near electrode segment 13.1 and at least one contact-remote electrode segment 13.4 and possibly further electrode segments 13.2, 13.3 arranged between them are provided and each electrode segment 13.x is fed by a separate current source 15.x.
L'invention vise à optimiser le traitement électrolytique de pièces (9) réalisées en matériau non conducteur et présentant une métallisation de base très fine (6, 8). A cet effet, on fait intervenir un dispositif comportant des éléments destinés à mettre un liquide de traitement en contact avec les pièces (9), des éléments (10) destinés à mettre en contact électrique les pièces (9) au niveau de zones de contact, ainsi que des contre-électrodes (5.x) disposées de manière que les pièces (9) puissent faire face à ces dernières. Lesdites contre-électrodes (5.x) sont divisées en au moins deux segments d'électrode (13.x) de manière à créer des segments d'électrode (13.1) proches des contacts, au moins un segment d'électrode (13.4) distant des contacts, et éventuellement d'autres segments d'électrode (13.2, 13.3) disposés entre ceux-ci, chaque segment d'électrode 13.x étant alimenté par une source de courant séparée 15.x.
Atotech Deutschland Gmbh
Riches Mckenzie & Herbert Llp
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