Cemented carbide with binder phase enriched surface zone

Details Cemented carbide with binder phase enriched surface zone Cemented carbide with binder phase enriched surface zone

C - Chemistry, Metallurgy

22

C

C22C 29/08 (2006.01)

Patent

CA 2130544

The present invention relates to 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. 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 content in the inner portion of the insert and the content of cubic phases essentially constant and equal to the content in the inner portion of the insert.

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