Composite polycrystalline cutting element with improved fracture and delamination resistance
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United States of America Patent
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Oct 18, 1994
Grant Date -
N/A
app pub date -
Mar 22, 1993
filing date -
Mar 22, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cutting implement formed from a substrate of carbide, or other hard substance, bonded to a polycrystalline layer which serves as the cutting portion of the implement. The interface between the substrate and polycrystalline layer is defined by surface topography with radially spaced-apart protuberances and depressions forming smooth transitional surfaces.
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Cited Art Landscape
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