Patent · US Expired

Coated body with nanocrystalline CVD coating for enhanced edge toughness and reduced friction

US6620498B2 · kind B2 · utility

5Cited by

10References

24Claims

0Family size

Assignee

Seco Tools AB · SE

Inventors

Sakari Ruppi · Fagersta, SE
Lennart Karlsson · Alingsås, SE

Key dates

Filing date	Aug 19, 2002
Grant date	Sep 16, 2003
Priority date	—
Expiry date	Aug 19, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/252
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

An improved coated body having a nanocrystalline CVD coating of Ti(C,N,O) is disclosed. The coating is formed using the MTCVD process and including, as part of the gaseous mixture, CO, CO2 or mixtures thereof. The use of this dopant during the coating results in a much smaller, equiaxed grain size. The method of forming the body is also disclosed.

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