Surface treated steel product prepared by tin-based plating or aluminum-based plating
US6649282B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Dec 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12757
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A tin-plating or aluminum-plating surface treated steel material with excellent corrosion resistance containing an intermetallic compound composed of one or more Group IIa (alkaline earth metal) elements and one or more Group IVb elements in a tin-based plating layer or aluminum-based plating layer on the surface of a steel material. For a tin-based plating layer, the long diameter of the intermetallic compound massive bodies is 1 82 m or greater and the short diameter/long diameter ratio is at least 0.4. For an aluminum-based plating layer, the long diameter of the intermetallic compound massive bodies is 10 &mgr;m or greater and the short diameter/long diameter ratio is at least 0.4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.