HIGHLY CORROSION RESISTANCE HOT-DIP COATED STEEL SHEET HAVING EXCELLENT ABRASION RESISTANCE, AND ITS PRODUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide steel which is excellent in abrasion resistance even when a cooling rate is low in a highly corrosion resistant coated steel sheet added with Al.;SOLUTION: The highly corrosion resistant hot dip coated steel sheet having the excellent abrasion resistance is obtained by forming a coating layer containing an intermetallic compound comprising ≥4 mass% Al and having lattice planes of ≥2.57 to ≤3.15 Å in one spacing of the lattice orientations constituting the lattice plane of a Bravais lattice and ≥3.64 to ≤4.46 Å in another spacing in an Al phase on the surface.;COPYRIGHT: (C)2005,JPO&NCIPI