Claims
- 1. A surface treated steel sheet with low contact resistance comprises:a. a steel sheet which is coated with a nickel-tin alloy; b. a film formed on the nickel-tin alloy coated steel sheet of (a), which film comprises carbon black or graphite, carboxymethyl cellulose, and a water borne organic resin.
- 2. The surface treated steel sheet according to claim 1 wherein the water borne organic resin is selected from the group consisting of acrylic resins, polyester resins, urethane resins, phenol resins, and mixtures thereof.
- 3. The surface treated steel sheet according to claim 1 wherein the steel sheet is iron-chromium stainless steel or iron-nickel-chromium stainless steel.
- 4. A connection terminal comprising the surface treated steel sheet according to claim 1 in contact with carbon in an electric connection terminal.
- 5. A surface treated steel sheet with low contact resistance comprises:a. a steel sheet which is coated with a nickel-tin alloy wherein said coated steel sheet is formed by plating nickel onto the steel sheet plating tin onto the nickel-plated steel sheet, and subjecting the plated steel sheet to difussion to form a nickel-tin alloy; and b. a film formed on the steel nickel-tin alloy coated sheet of (a), which film comprises carbon black or graphite, carboxymethyl cellulose, and a water borne organic resin and a cross-linking agent for the water borne organic resin.
- 6. The surface treated steel sheet according to claim 5 wherein the water borne organic resin is selected from the group consisting of acrylic resins, polyester resins, urethane resins, phenol resins, and mixtures thereof.
- 7. The surface treated steel sheet according to claim 5 wherein the steel sheet is iron-chromium stainless steel or chromium-nickel-chromium stainless steel.
- 8. A connection terminal comprising the surface treated steel sheet according to claim 5 in contact with carbon in an electric connection terminal.
- 9. A process for producing a surface treated steel sheet with low contact resistance comprising:a. plating nickel onto the steel sheet; b. plating tin onto the nickel-plated steel sheet; c. subjecting the plated steel sheet to diffusion to form a nickel-tin alloy; d. coating said diffused steel sheet with a coating comprising carbon black or graphite, carboxymethyl cellulose, and a water borne organic resin.
- 10. The process according to claim 9 wherein the water borne organic resin is selected from the group consisting of acrylic resins, polyester resins, urethane resins, phenol resins, and mixtures thereof.
- 11. The process according to claim 9 wherein the steel sheet is iron-chromium stainless steel or iron-nickel-chromium stainless steel.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9-329666 |
Nov 1997 |
JP |
|
CROSS REFERENCE TO RELATED APPLICATION
The present application is the national stage under 35 U.S.C. 371 of PCT/JP98/05060, filed Nov. 10, 1998.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/JP98/05060 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO99/25486 |
5/27/1999 |
WO |
A |
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
5993994 |
Ohmura et al. |
Nov 1999 |
A |
Foreign Referenced Citations (2)
Number |
Date |
Country |
61-223195 |
Oct 1986 |
JP |
7-186322 |
Jul 1995 |
JP |