quantitatives measurement : Coil contractometer (N/mm2)
qualitatives measurement :
Electroless nickel - inside stress of
During the en
deposition developing in the deposited layers in dependence of the bath
type and the bath age, of the phosphorus content in the coating as well as of the basic material, macro and
micro tensions. In the practice particularly the macro inside stresses are relevant.
It is distinguished between pressure and tensile tension and the first kind are considered HP layers to approx. 5 mto, the second kind for MP layers.
Quickly deposited electrolytes produce increasing tensile tension with higher pH values.
Experience one gives in the practice just to this property too little importance. The plater delegates from it resulting problems, as for example adhesion difficulties, to the product supplier. Unfortunately, stored cases have become such the "comfortable" method of approach, however, contains deficits which have already appeared in the approach of the procedure choice. All the more the technical discussion and the technical exchange is also asked here from the beginning.