Surface layer forming a cylinder barrel surface, a spraying powder suitable therefor and a method of creating such a surface layer
US6578539B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 15, 2001 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | May 15, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12063
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A surface layer for forming a cylinder barrel wall of a combustion engine block is proposed. The surface layer has separate phases of components that are separated from the phase of the remaining materials. The surface layer is produced by plasma spraying an iron containing spraying powder, incorporating all components of the layer to be produced. Such a surface layer may be applied easily and shows a significantly improved behavior regarding the machining thereof, without negatively influencing other important characteristics of the layer material, like wear resistance and coefficient of friction vis-à-vis the material of the piston rings. Preferred components of the spraying powder are, besides Fe, Cr, MN, S and C. Moreover, the spraying powder can contain As, Te, Se, Sb and/or Bi.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.