Patent
Title

Verbundkoerper aus vakuumbeschichtetem Sinterwerkstoff und Verfahren zu seiner Herstellung

Other Title
Stable aluminium oxide coating on sintered body - is formed from fully crystalline aluminium oxide at 800 deg. C on intermediate layer contg. oxide(s), nitride(s) etc. of titanium, zirconium etc..
Abstract
The surface of a sintered body (1) is coated with a fully crystalline A1203 at max. 800deg.C. The coating is made up of alpha-A1203 and opt. gamma-A1203 with a (440) texture and, with the exception of argon, contains no noticeable impurities. USE - In cutting tool, esp. cutting discs. ADVANTAGE - The coating is thermally, mechanically and chemically stable and is smooth and free from cracks. The production process is environmentally friendly and economic.
Inventor(s)
Goedicke, K.
Hoetzsch, G.
Fietzke, F.
Zywitzki, O.
Schiller, S.
Reschke, J.
Hempel, W.
Link to Espacenet
Patent Number
1995-19518779
Publication Date
1998
Language
German