Title:
ALUMINUM-BASED METALLIC SHEET HAVING CORROSION RESISTANT COMPOSITE LAYER
Document Type and Number:
Japanese Patent JP3686575
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an aluminum-based metallic sheet having a corrosion resistant composite layer having corrosion resistance in a bare state and after coating equal to that of the conventional chromate film without using hexavalent chromium at all and further exhibiting excellent workability.
SOLUTION: This aluminum-based metallic sheet having a corrosion resistant composite layer is obtained by providing the surface of an aluminum-based metallic sheet with an intermediate layer with a thickness of ≤0.5 μm essentially consisting of an inorganic colloid and a IVA group compound and providing the surface of the intermediate layer with a resinous corrosion resistant layer with a thickness of ≥0.2 μm essentially consisting of a rare earth compound, an inorganic colloid and a resin.
Inventors:
Kenichiro Tadokoro
Takashi Iijima
Hiroshi Souji
Takashi Iijima
Hiroshi Souji
Application Number:
JP2000215284A
Publication Date:
August 24, 2005
Filing Date:
July 17, 2000
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B32B9/00; B32B15/08; B32B15/20; C23C22/34; C23C22/56; C23C22/83; C23C28/00; C23C28/04; (IPC1-7): C23C22/56; B32B15/08; B32B15/20
Domestic Patent References:
| JP364485A | ||||
| JP1161429A | ||||
| JP1161432A | ||||
| JP2000309879A | ||||
| JP9504337A | ||||
| JP10147888A |
Foreign References:
| US6190780 |
Attorney, Agent or Firm:
Shiina Akira