| 摘要 |
<p>A plated composite steel strip having a high corrosion resistance comprises a steel strip substrate, a base electroplating layer comprising a Zn or Zn alloy matrix, substantially water-insoluble chromate particles, and additional fine or colloidal particles of SiO2 , TiO2 , Cr2O3 , Al2O3 , ZrO2 , SnO2 and/or Sb2O5 , and optionally, an additional electroplating layer formed on the base layer and consisting of Zn, Fe, Co, Ni, Mn and/or Cr and/or a surface coating layer containing at least an organic resinous surface layer and formed on the base or additional electroplating layer.</p> |
