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Patent
Title
Cermet- Hartstoffschicht- Verbund und Verfahren zu dessen Herstellung
Other Title
Cermet hard material coating composite and process for its production
Abstract
The invention relates to a cermet hard material coating composite with excellent wear characteristics. During its production, no brittle intermetallic phases should occur and a diminution in strength is to be avoided. Thus a hard material coating is applied to a cermet substrate which is nitrided or carbonitrided to a depth of 10 <my>m. The coating consists of one or several hard material coatings formed from a nitrogen-containing hard material compound or a nitrogen-containing hard material mixture consisting of one or several elements of the IV to VI subgroups of the periodic system and/or borium and/or aluminium and/or silicon and/or carbon. In production, a cermet substrate is first subjected to a nitriding or carbonitriding treatment at a temperature of up to 700 degrees C for a period of 5 to 120 minutes. This is followed by a low-temperature coating process to deposit one or several hard material coatings. Temperatures of up to 700 degrees C are applied. The invention is prefera bly used with cermet materials which mainly consist of titanium carbonitride as the hardness material and a nickel/cobalt binder. The compounds according to the invention are particularly suitable for use as cutting tools in metal cutting operations.
Inventor(s)
Endler, I.
Wolf, E.
Leonhardt, A.
Richter, V.
Patent Number
1995-19510439
Publication Date
1996
Language
German