Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1992-06-01
1993-09-21
Woo, Jay H.
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
249116, 249135, 428469, 4284722, 428622, C25D 1102
Patent
active
052467872
ABSTRACT:
A coated tool or instrument has a wear-resistant hard coating (7) which is preferably titanium nitride for working organic material which is disposed on a separating layer (9) applied on a basic body (3). The separating layer (9) comprises a ceramic electrically non-conducting material. Such a material is preferably an oxide, nitride or oxynitride of silicon. The separating layer (9) protects the basic body (3) of the tool or instrument of e.g. a non-corrosion resistant steel. During the coating of the basic body (3) with the ceramic material, a pulsating dc voltage is applied to the basic body (3) or its holders. The pulse height is changed during the vapor deposition from high negative values to low negative values.
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Ahmed et al., 4 EME Collogue Intern. Sur Les Plasmas et La Pulverization Sep. 13-17, 1982.
Bergmann Erich
Daxinger Helmut
Ramm Jurgen
Schulz Hans
Balzers Aktiengesellschaft
Davis Robert B.
Woo Jay H.
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