Patent · US Expired

Method for generating hard, wear-proof surface layers on a metallic material

US4537793A · kind A · utility

22Cited by

5References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Hans-Peter Kehrer · Pforzheim, DE
Juergen Villain · Unterhaching, DE
Werner Reiff · Baldham, DE

Key dates

Filing date	Jun 6, 1983
Grant date	Aug 27, 1985
Priority date	—
Expiry date	Jun 6, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C10/28
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Hard, wear-proof surfaces are produced on a metallic material, such as a ferrous material, by applying a decomposable compound containing an element capable of hardening metallic materials, in the form of a powder, a paste-like admixture or a liquid, onto surfaces to be hardened, and applying an energy surge, obtained from, for example, a laser beam or an electron beam, to the surfaces containing such coating so as to decompose the coating and release the element which diffuses into the surface to be hardened. With this process, the base material is not subjected to any meaningful thermal loads and is not altered in term of its mechanical and physical properties.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.