Adhesively bonded aluminum
US5324587A · kind A · utility
10Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1991 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Nov 4, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31522
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminate suitable for vehicular applications includes at least two sheets of aluminum alloy and an adhesive layer between the sheets bonding them together. An oxide layer on surfaces of the sheets is treated with a phosphorous acid electrolyte, so that a coordination number of four predominates for the aluminum-oxygen-phosphorous bond. Equivalent bonding strengths in the laminates are obtained in substantially less time with phosphorous acid treatment compared with phosphoric acid treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.