Medium-low temperature high corrosion resistant black phosphating solution on steel surface

Medium-low temperature high corrosion resistant black phosphating solution on steel surface

  • CN 101,200,799 A
  • Filed: 12/15/2006
  • Published: 06/18/2008
  • Est. Priority Date: 12/15/2006
  • Status: Active Application
First Claim
Patent Images

1. hang down temperature high corrosion resistant black phosphating solution in a steel surface, it is characterized in that in 1 liter of phosphatization liquid, containing:

  • Phosphate dihydrogen manganese 40-50g/L zinc nitrate 60-70g/LNickelous nitrate 1-2g/L acetic acid 3-4ml/LAmmonium citrate 2-3g/L bismuth molybdate 1-2g/LAll the other are water.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×