SURFACE TREATED TIN-PLATED STEEL SHEET AND CHEMICAL TREATMENT SOLUTION

WIPO Patent Application WO/2002/038830

A1

A surface treated tin-plated steel sheet which has (1) an alloy layer formed on the surface of a steel sheet, (2) a tin plating layer being formed on said alloy layer with a remaining exposed portion of the alloy layer having an area of 3.0 % or more of that of said alloy layer and, formed on said tin plating layer and said exposed portion of the alloy layer, (3) a coating film containing P and Si in an amount of 0.5 to 100 mg/m?2¿ and 0.1 to 250 mg/m?2¿, respectively; and a chemical treatment solution for use in preparing the steel sheet which comprises a phosphate ion, a tin ion and a silane coupling agent and has a pH of 1.5 to 5.5. The surface treated tin-plated steel sheet is free from chromium which causes problems from an environmental view point, and also is excellent in adhesion with a paint, corrosion resistance after being coated, rust resistance, and formability.

JPH03287724	PRODUCTION OF RARE EARTH ELEMENT-IRON-BORON MAGNET
JP3268927	FERRITIC STAINLESS STEEL BRIGHT ANNEALING MATERIAL EXCELLENT IN WORKABILITY AND RUST RESISTANCE
JP6739698	Soft magnetic metal film and magnetic parts

SHIGEKUNI TOMOFUMI (JP)
NAKAKOJI HISATADA (JP)
MOCHIZUKI KAZUO (JP)
KATO CHIAKI (JP)

PCT/JP2001/009424

May 16, 2002

October 26, 2001

Click for automatic bibliography generation  

KAWASAKI STEEL CO (JP)
SHIGEKUNI TOMOFUMI (JP)
NAKAKOJI HISATADA (JP)
MOCHIZUKI KAZUO (JP)
KATO CHIAKI (JP)

C22C38/00; C25D5/26; C22C38/08; C23C2/08; C23C22/07; C23C22/08; C23C28/00; C25D5/50; C25D7/00; C25D5/48; (IPC1-7): C23C28/00

JPH04346676A

1992-12-02

None

Ochiai, Kenichiro c/o Tokyo, Head Office (KAWASAKI STEEL CORPORATION Hibiya Kokusai Building 2-, Uchisaiwaicho 2-chome Chiyoda-ku Tokyo, JP)

View/Download PDF      PDF Help

Previous Patent: PASSIVATION METHOD

Next Patent: DUAL SECTION SYSTEM FOR THE DISCHARGE OF BI-PHASE GAS-LIQUID MIXTURES