| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrosion inhibition method for weather resistant steel. SOLUTION: The surface of weather resistant steel is formed of a colored coating film with a dry film thickness of 50 to 90μm containing (1) an organic resin; (2) a first compound selected from the group consisting of NiSO<SB>4</SB>, NiCO<SB>3</SB>, Ni<SB>3</SB>(PO<SB>4</SB>)<SB>2</SB>, Ni(No<SB>3</SB>)<SB>2</SB>, CuO, Cu<SB>3</SB>(PO<SB>4</SB>)<SB>2</SB>, AlPO<SB>4</SB>, Al<SB>2</SB>(MoO<SB>4</SB>)<SB>3</SB>and CuCO<SB>3</SB>Cu(OH)<SB>2</SB>in 0.5 to 30 pts.mass to 100 pts.mass of the solid content of the organic resin; (3) a secondary compound selected from the group consisting of H<SB>3</SB>[PW<SB>12</SB>O<SB>40</SB>]- nH<SB>2</SB>O, H<SB>4</SB>[SiW<SB>12</SB>O<SB>40</SB>]-nH<SB>2</SB>O, H<SB>3</SB>[PMo<SB>12</SB>O<SB>40</SB>]-nH<SB>2</SB>O, Na<SB>3</SB>[PMo<SB>12</SB>O<SB>40</SB>]-nH<SB>2</SB>O, H<SB>3</SB>[PW<SB>12-x</SB>Mo<SB>x</SB>O<SB>40</SB>]-nH<SB>2</SB>O (0<x<12), H<SB>4</SB>[SiMo<SB>12</SB>O<SB>40</SB>]-nH<SB>2</SB>O, phosphoric acid, nitric acid, molybdic acid, tungstic acid and boric acid in 0.5 to 25 pts.mass to 100 pts.mass of the solid content of the organic resin; and (4) a coloring agent. COPYRIGHT: (C)2003,JPO
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