Reasons for adhesion problems :

  • contaminated pretreatment solutions

  • for the ground material the wrong pretreatment 

  • en bath with too much orthophosphite

  • contaminations in the en bath

  • too much tension in the layer

  • too fast deposition

  • wrong pH adjustment in the en bath  


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rocket propulsion 75 years ago


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Electroless nickel - adhesion of the coats


testing methods :

  • temperature shock method - change temperature test

  • nieht hammer check           

  • bending test                     

  • lattice cut test                             

  • front deduction attempt

  • shear test

  • peeling test