Method for generating hard, wear-proof surface layers on a metallic material
AssigneeSiemens Aktiengesellschaft
InventorsHans-Peter Kehrer, Juergen Villain, Werner Reiff
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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.
Claims7
A method for producing hard, wear-proof surface layers on a metallic material, comprising:
- applying a decomposable compound containing an element capable of hardening metallic material onto a metallic material surface to be hardened;
- and
- applying an energy surge to at least the surface areas containing said compound so as to decompose said compound and release said element which diffuses into the surface to be hardened, thereby producing a surface layer having a chemical composition different from that of said metallic material;
- said applyings being carried out so that said surface layer has a thickness up to about 20 .mu.m.
Dependencies are inferred from the claim text.