New developments in the adhesion promotion of electroless Ni or Cu films to polyimide substrates - Polyimides and Other High Temperature Polymers - page 305

Figure 10. Fragmentation test. Dependence of the relative electrical resistance of 200 nm thick Ni
films on the applied strain. Curve (a) is relative to a Kapton ® HN substrate which was plasma-
treated in NH 3 , then “activated” in an acidic PdCl 2 solution and immersed in a H 2 PO 2 - reducing
bath. Curve (b) is relative to the same NH 3 plasma-treated substrate after its activation via the Pdac
route and its reduction in a H 2 PO 2 - bath. Curves (c) and (d) were obtained by integration of curves
(a) and (b), respectively. Area [in (%)²] on the right ordinate scales is the result of these integrations.