Method of producing a high strength and hard metallic composite layer material
US5094699A · kind A · utility
10Cited by
2References
10Claims
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Key dates
| Filing date | Feb 20, 1990 |
| Grant date | Mar 10, 1992 |
| Priority date | — |
| Expiry date | Feb 20, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C26/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing high strength and hard metallic composite layer materials by connecting several metal layers with one another, includes forming the metal layers as flat products by rolling from a metal with low base strength, alloying and hardening the flat products over their whole cross-section with a metalloid by heat treatment in a metalloid containing gas atmosphere, then connecting the flat products with one another by diffusion welding. As metalloids preferably nitrogen, boron and carbon are used. Diffusion welding is performed by hot isostatic pressure method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.