Enhancement of metal adhesion thanks to the plasma texturing of PEEK

Amélioration de l'adhésion métallique sur un PEEK texturé par plasma

David Gravis (1) , Grégoire Rigolé (2) , Mayssa Yengui (2) , Wolfgang Knapp (3) , Jean-François Coulon (1) , Fabienne Poncin-Epaillard (1)

1 IMMM - Institut des Molécules et Matériaux du Mans
2 ECAM - ECAM Rennes - Louis de Broglie
3 EPUN - Ecole Polytechnique de l'Université de Nantes

To understand both chemical and anchoring aspects of Al adhesion, the PEEK surface was plasma textured prior to be coated. The practical adhesion was compared to that obtained by laser texturing. The surfaces and assemblies were characterized by SEM, AFM microscopies, surface free energy determination and pull-off tests. Patterning processes increase the Al adhesion. O 2 plasma appears to be the most efficient through a texture assigned to the chemical erosion while Ar plasma mostly induces material etching with-2-thermal effects altering the PEEK crystallinity. With low pressure plasmas, this texturing can be added to the chemical functionalization in order to further increase the adhesion.

Mots clés: aluminum -PEEK assembly; laser; plasma; texturing

Domaines: Chimie; Matériaux

David Gravis, Grégoire Rigolé, Mayssa Yengui, Wolfgang Knapp, Jean-François Coulon, et al.. Enhancement of metal adhesion thanks to the plasma texturing of PEEK. Plasma Processes and Polymers, 2021, 18 (6), pp.2100009. ⟨10.1002/ppap.202100009⟩. ⟨hal-03367414⟩