AL2O3 MULTILAYER PLATE

European Patent Office Patent

PATENT NO 1834008
APP PUB NO EP-1834008-A2
SERIAL NO

05846522

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Abstract

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Cutting plate comprises a wear-reducing coating consisting of a multiple layer base layer (2, 3) made from nitrides, carbides, carbonitrides and an oxycarbide, boronitride, borocarbonitride, borocarbonitride or aluminum-containing oxycarbonitride of group 4, 5, and/or 6 sub-group metals, an aluminum oxide multiple layer (4) consisting of aluminum oxide layers (5, 6, 7) and intermediate layers (8, 9) each containing a TiCN layer (11, 12) and a TiCNO layer (11a, 12a) and a two-layer covering layer (17) consisting of nitrides, carbides, oxycarbonitrides or carbonitrides of Ti, Zr or Hf with a thickness of more than 3 mu m.

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Patent Owner(s)

Patent OwnerAddress
WALTER AKTIENGESELLSCHAFTDEDERENDINGER STRASSE 53 D-72072 TUBINGEN

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Inventor(s)

Inventor Name Address
HOLZSCHUH HELGA MEHRSTETTEN

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