Patent · US Expired

Diamond coated body

US5543210A · kind A · utility

15Cited by

12References

16Claims

0Family size

Assignee

SANDVIK AB · SE

Inventors

Gregor Kullander · Alvesta, SE
Ingrid Reineck · Stuvsta-Snättringe, SE
Helene S. R. Brandrup-Wognsen · Tyresö, SE

Key dates

Filing date	Jun 24, 1994
Grant date	Aug 6, 1996
Priority date	—
Expiry date	Jun 24, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/30
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

There is now provided a body of cemented carbide, Si.sub.3 N.sub.4 or another ceramic material, coated by at least one CVD or PVD diamond or cBN layer with a chromium nitride, chromium carbide or chromium carbonitride layer. The chromium-containing layer is outside the diamond layer which in the case of more than one diamond layer is the outermost diamond layer of the coating. Improved machining properties are obtained.

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