Title:
METALLIC MOLD HAVING THIN DIAMOND-LIKE PROTECTIVE FILM
Document Type and Number:
Japanese Patent JP3205363
Kind Code:
B2
Abstract:
PURPOSE: To improve wear resistance and durability of a metallic mold by providing a carbonaceous film middle layer with specific condition by the bias impressed plasma CVD method or the ionized vapor deposition method and by successively forming a thin diamond-like film on the middle layer.
CONSTITUTION: The carbonaceous film middle layer having hardness Hr=1000-5000kg/mm2, which is larger than hardness of the surface of the metallic mold and is smaller than hardness of the thin diamond-like film, and the thin diamond-like film having larger hardness than hardness of the middle layer are formed on the surface of the metallic mold which is soon worn. Thickness of the middle layer is 0.02-3μm. The thin diamond-like film is applied on the metallic mold, on which usually the thin diamond-like film is difficult to bonding, by intervening the middle layer and then wear resistance and durability of the metallic mold is improved.
Inventors:
Masanori Shibahara
Masatoshi Nakayama
Masatoshi Nakayama
Application Number:
JP30826191A
Publication Date:
September 04, 2001
Filing Date:
October 29, 1991
Export Citation:
Assignee:
TDK Co., Ltd.
International Classes:
B21D37/01; B22D17/22; B29C33/38; B29C33/56; B29C45/26; B29C45/37; C23C16/26; C23C16/27; C30B29/04; (IPC1-7): C30B29/04; C23C16/27
Domestic Patent References:
| JP1201095A | ||||
| JP215169A | ||||
| JP222012A | ||||
| JP215170A |
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)
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