COATING CORROSION RESISTANT STEEL MATERIAL AND CORROSION PREVENTION METHOD OF CORROSION RESISTANT STEEL MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a coating corrosion resistant steel material exhibiting excellent corrosion resistance in high chloride environment and a corrosion prevention method for conducting coating on a corrosion resistant steel material.;SOLUTION: There is provided a coating corrosion resistant steel material containing a steel material containing, by mass%, Cu:0.10 to 1.00% and P:0.001 to 0.20% and limitation to Cr:0.30% or less and a Sn containing layer contacting a surface of the steel material and a rust layer existing on the surface of the steel material, the Sn containing layer contains a Sn ion supply material and a binder, the amount of the Sn ion supply material is 1 to 54 mass% in terms of metal Sn based on total solid content mass of the Sn containing layer. There is provided a corrosion prevention method of a corrosion resistant steel material for forming a Sn containing layer by applying a Sn containing coating onto the surface of the steel material or the rust layer formed on a surface of the steel material by mixing the Sn ion supply material with the binder to be 1 to 54 mass% in terms of metal Sn based on all solid component mass.;SELECTED DRAWING: None;COPYRIGHT: (C)2017,JPO&INPIT