Surface conditioning for thermal spray layers

US8209831B2 · kind B2 · utility

Assignee

• Daimler AG · DE

Inventors

• Jens Boehm · Blaustein, DE
• Michael Gruener · Zwingenberg, DE
• Martin Hartweg · Erbach, DE
• Tobias Hercke · Stuttgart, DE
• Karl Holdik · Ulm, DE
• Patrick Izquierdo · Ulm, DE
• Wolfgang Pellkofer · Ulm, DE
• Dezsoe Schilling · Hemmingen, DE

Key dates

• Filing date: Jan 19, 2007
• Grant date: Jul 3, 2012
• Expiry date: Mar 17, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24355
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a process for roughening metal surfaces to improve adhesion of layers which are thermally sprayed thereon, in that in a first process step recesses or depressions (2) are introduced into the surface in a material-detaching or material-removing treatment so that the protruding metal of the surface forms raised microstructures (3), in particular projections, ridges, protuberances or bumps, these microstructures being reworked in at least a second process step by shaping and/or breaking so that a significant proportion of the structures form undercuts (4) in relation to the surface.