Activation (Powder)


The activation of steel with colloidal titanium phosphate in the phosphating process was studied. The mechanism of the activation has been clarified.

The colloidal solution contains disc-shaped particles of the chemical composition

Sam active 211 these particles are adsorbed on the metal surface during the activation period. When exposed to the zinc phosphating solution, sodium ions on the surface of the titanium phosphate particles, having a surface consisting of zinc phosphate. Act as nucleation agents during the zinc phosphating.

The disc-shaped particles are predominantly adsorbed with the flat surface against the metal surface this cause orientation of the zinc phosphate crystals which are nucleated on the titanium phosphate particles. The absorbed titanium phosphate particles can also affect the composition of the zinc phosphate layer.

Use: - 0.5% of water volume