EP 0584364 B1 19961016 - Al-Si-Cr-PLATED STEEL SHEET EXCELLENT IN CORROSION RESISTANCE AND PRODUCTION THEREOF
Title (en)
Al-Si-Cr-PLATED STEEL SHEET EXCELLENT IN CORROSION RESISTANCE AND PRODUCTION THEREOF
Title (de)
A1-Si-Cr-BESCHICHTETE STAHLPLATTE UND DEREN HERSTELLUNG
Title (fr)
TOLE D'ACIER PLAQUEE Al-Si-Cr, AYANT UNE EXCELLENTE RESISTANCE A LA CORROSION, ET PRODUCTION DE CETTE TOLE
Publication
Application
Priority
- JP 3475993 A 19930129
- JP 3476093 A 19930129
- JP 5901692 A 19920212
- JP 5901792 A 19920212
- JP 7356092 A 19920225
- JP 9300163 W 19930209
Abstract (en)
[origin: WO9316210A1] A plated steel sheet having improved corrosion and heat resistances is produced by supplying chromium to an Al-Si plating layer formed on the surface of a steel sheet by hot dipping. The chromium source to be used comprises a chromium coating layer formed on the surface of a nonplated sheet by electroplating, vacuum deposition, etc. The wettability of the chromium coating layer with a plating metal can be improved by activating the surface of the layer by plasma etching, ion beam etching, etc., before dipping a chromium-coated steel sheet in a hot dipping bath. The plating layer L formed on the steel substrate S has a layered structure composed of the first layer L1? based on chromium, the second layer L2? based on Cr-Al-Si system and the third layer L3? based on Al-Si-Cr system, when plating is conducted under the conditions of a thick chromium coating layer and a relatively suppressed diffusion of chromium. Since the plating layer L contains chromium, the resultant plated steel sheet is far more excellent in corrosion and heat resistances than the conventional Al-Si-plated steel sheets.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
C23C 2/0034 (2022.08 - EP US); C23C 2/00344 (2022.08 - EP US); C23C 2/0035 (2022.08 - EP US); C23C 2/0038 (2022.08 - EP US); C23C 2/004 (2022.08 - EP US); C23C 2/022 (2022.08 - EP US); C23C 2/024 (2022.08 - EP US); C23C 2/026 (2022.08 - EP US); C23C 2/12 (2013.01 - EP)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9316210 A1 19930819; CA 2107560 A1 19930813; CA 2107560 C 19990504; DE 69305458 D1 19961121; DE 69305458 T2 19970306; EP 0584364 A1 19940302; EP 0584364 A4 19940817; EP 0584364 B1 19961016; KR 0166099 B1 19990115
DOCDB simple family (application)
JP 9300163 W 19930209; CA 2107560 A 19930209; DE 69305458 T 19930209; EP 93903330 A 19930209; KR 930703118 A 19931012