Cemented carbide body for rock drilling mineral cutting and high

Details Cemented carbide body for rock drilling mineral cutting and high Cemented carbide body for rock drilling mineral cutting and high

1994-03-17

1998-02-17

Gorgos, Kathryn L.

Coating processes

Coating by vapor, gas, or smoke

Carbon or carbide coating

427562, 427566, 427577, 427582, 427585, 427586, 427590, 427596, 428552, C23C 1602, C23C 1626

Patent

active

057189480

ABSTRACT:
The invention relates to a coated cemented carbide body for rock drilling having a substrate containing at least one metal carbide and a binder metal and an at least partly covering coating comprising at least one diamond- or cBN-layer applied by CVD- or PVD-technique. The cemented carbide body has a core of cemented carbide containing eta-phase surrounded by a surface zone of cemented carbide free of eta-phase.

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