Highly corrosion-resistant rust-preventive coating material, steel material with high corrosion resistance, and steel structure

摘要

Including a highly erosion-resisting rust-prevention coating material:One inorganic binder; WithIncluding zinc and inevitable impurity and it is dispersed in the zinc metallic particles by 30 mass % or bigger ratio based on a dry coat film in adhesive,Wherein (i) zinc metallic particles includes (i-1) particulate zinc metallic particles of 0.05 to 5 microns of peak diameters, the distribution of its particle-diameter has the particle the with a single peak-diameter frequency disribution of 6 to 100 microns of peak diameters and in the tail portion of peak value either side and the zinc metallic particles of (i-2) coarse grain, and particle-diameter is distributed particle-diameter frequency disribution with another single peak and in the tail portion of peak value either sideWherein (ii) by indicated in percentage by volume 0.The percentage for all zinc metallic particles that the zinc metallic particles of 05 to 5 micron grain sizes is explained is 5 to 99%.