Anticorrosive treatment for conversion layers

Anticorrosive treatment for conversion layers

  • CN 101,720,364 A
  • Filed: 06/13/2008
  • Published: 06/02/2010
  • Est. Priority Date: 06/14/2007
  • Status: Active Application
First Claim
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1. one kind prepares the tectal method of anti-corrosion protection;

  • wherein;

    make processed surface is contacted with the aqueous treatment solution that contains chromium (III) ion and at least a phosphate compounds, wherein the ratio between the volumetric molar concentration of chromium (III) ionic volumetric molar concentration and this at least a phosphate compounds (calculating by orthophosphoric acid salt) is between 1;

    1.5 to 1;


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