Title:
HARD COATING, WORKPIECE COATED IN SAME, AND COATING METHOD
Document Type and Number:
Japanese Patent JP3323534
Kind Code:
B2
Abstract:
PURPOSE: To render hard coating extremely hard and manufacturable at extremely low temperature by forming them from generally (Al, Cr)2O3-mixed crystals with a chrome content higher than 5 at.%.
CONSTITUTION: A workpiece 1 is coated in (Al, Cr)2O3 by a chemical (CVD) or physical (PVD) coating process at a temperature lower than 900°C. This coating preferably has a higher chrome content at tool surfaces mainly exposed to chemical wear when used than at such tool surfaces as friction surfaces less subjected to chemical wear but more placed under stress by friction when used. Without any quenching after the coating process, the workpiece 1 is provided with a hard coating of (Al, Cr)2O3-mixed crystals with a chrome content higher than 5 at.%.
More Like This:
Inventors:
Hans Schulz
Masahiko Osaka
Masahiko Osaka
Application Number:
JP12462492A
Publication Date:
September 09, 2002
Filing Date:
May 18, 1992
Export Citation:
Assignee:
Unaxis Balzers Akchen Gesell Shaft
International Classes:
B23P15/28; C01G37/00; C23C14/08; C23C16/40; B23B27/14; C23C30/00; (IPC1-7): B23P15/28; B23B27/14; C01G37/00; C23C14/08
Domestic Patent References:
| JP1316469A |
Other References:
【文献】仏国特許出願公開2422728(FR,A1)
Attorney, Agent or Firm:
Aoki Akira (4 outside)