Cutting elements with interface having multiple abutting depressions
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United States of America Patent
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Feb 4, 2003
Grant Date -
Aug 15, 2002
app pub date -
Feb 9, 2001
filing date -
Feb 9, 2001
priority date (Note) -
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Abstract
Cutting elements for incorporation in a drill bit are provided having a body and an ultra hard material cutting layer over an end face of the body. A plurality of abutting shallow depressions are formed on the end face of the body. A transition layer may be incorporated between the body and the ultra hard material layer. The transition layer preferably has material properties intermediate between the properties of the body and the ultra hard material layer.
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