COATING MATERIAL FOR HIGHLY CORROSION-RESISTANT ZINC ALLOY-PLATED STEEL MEMBER AND STEEL STRUCTURE HAVING COATING FILM MADE OF SUCH COATING MATERIAL

摘要

Disclosed is a coating material for highly corrosion-resistant zinc alloy- plated steel members which is characterized by containing not less than 60 mass% of a zinc alloy powder which has a chemical composition composed of no t less than 10 mass% and less than 30 mass% of aluminum and the balance of zin c and unavoidable impurities. This coating material for highly corrosion- resistant zinc alloy-plated steel members is further characterized in that t he zinc alloy powder has a spherical or oval-spherical shape and the ratio between the maximum diameter and the minimum diameter (maximum diameter/minimum diameter) thereof is from 1 to 1.5. Also disclosed is a ste el structure having a coating film which is formed by using such a coating material.