Patent · US Expired

Cemented carbide with binder phase enriched surface zone

US5549980A · kind A · utility

32Cited by

8References

6Claims

0Family size

Assignee

SANDVIK AB · SE

Inventors

Ake Ostlund · Stuvsta-Snättringe, SE
Ulf Oscarsson · Tumba, SE
Per Gustafson · Huddinge, SE
Leif Akesson · Houjie, CN

Key dates

Filing date	Jun 10, 1994
Grant date	Aug 27, 1996
Priority date	—
Expiry date	Jun 10, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/26
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A cemented carbide insert with improved toughness and resistance against plastic deformation containing WC and cubic phases of carbide and/or carbonitride in a binder phase based on Co and/or Ni with a binder phase enriched surface zone is disclosed. The binder phase content in the insert is 3.5-12 weight-%. In a zone below the binder phase enriched surface zone, the binder phase content is 0.85-1 of the binder phase content in the inner portion of the insert and the content of cubic phases is essentially constant and equal to the content in the inner portion of the insert.

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