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专利名称：Method of fabricating a hard, adherent and
corrosion resistant layer
发明人：WOESTE, HANS-PETER,SCHULZE, DIETMAR,
.,WILBERG, RUEDIGER
申请号：EP96108290.6
申请日：19960524
公开号：EP0748880A2
公开日：19961218
摘要：Prodn. of a hard material layer on a substrate having an electrolytically applied
Ni-Cr coating is claimed, in which the hard material layer is deposited in a plasma-
promoted physical vacuum deposition process. The novelty is that a Ni layer of thickness
of 13-20 mu m and a Cr layer of thickness of 0.2-0.3 mu m and deposited as the Ni-Cr
coating on the substrate and heated in a 1st tempering step after rinsing and drying in
vacuum until the substrate and components, including the wall of the coating chamber,
have a temp. of 75-150 degrees C. Water condensates are vaporised from the surfaces.
The substrate is heated in a 2nd tempering step to a max. temp. for the base material of
the substrate until hydrogen is driven off the surface zone of the electrolytically applied
Cr layer. The temp. of the substrate decreases and is maintained below the max. temp of
the 2nd tempering step. The substrate is then subjected to ion purification until
impurities are removed. A 0.05-1 mu m metal layer is then slowly deposited by plasma-
promoted physical vacuum deposition and then a 0.5-2 mu m corrosion-resistant hard
material layer is deposited. The temp. of the substrate is raised compared with the temp.
on ion purification but below the temp. of the 2nd tempering step. The hard material
coating on the substrate is also claimed.
申请人：VTD-VAKUUMTECHNIK DRESDEN GMBH,JADO DESIGN ARMATUR UND
BESCHLAG AG
地址：Bismarckstrasse 66 D-01257 Dresden DE,Paul-Ehrlich-Strasse 5 63322
Rödermark DE
国籍：DE,DE
代理机构：Pätzelt, Peter, Dipl.-Ing. Patentanwalt
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