AL2O3 multilayer plate
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United States of America Patent
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app pub date -
Jun 26, 2007
filing date -
Dec 30, 2004
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Abandoned
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Abstract
The layer structure of a cutting plate produced according to a chemical vapor deposition CVD method contains a thick outer covering layer of medium temperature (MT) TiCN, and a multilayer Al.sub.2O.sub.3 layer arranged beneath the covering layer. Said multilayer Al.sub.2O.sub.3 layer consists of, at least, two aluminum oxide layers between which TiCN layers, and optionally TiAlC--NO layers for improving adhesion, are arranged. One such overall design has especially good chip removal properties.
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