Title:
The piston of an internal-combustion engine
Document Type and Number:
Japanese Patent JP5938374
Kind Code:
B2
Abstract:
A piston for an internal combustion engine includes a piston body made of an aluminum alloy material containing silicon and having a piston ring groove formed therein and an anodic oxide film formed on the piston ring groove, wherein a metal containing nickel and zinc is deposited around silicon particles in the anodic oxide film.
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Inventors:
Takanori Sato
Masato Sasaki
Tomoichi Takahashi
Masato Sasaki
Tomoichi Takahashi
Application Number:
JP2013160028A
Publication Date:
June 22, 2016
Filing Date:
August 01, 2013
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
C25D11/20; C25D7/00; F02F3/00; F16J1/02; F16J9/00
Domestic Patent References:
| JP6088292A | ||||
| JP1190951A |
Foreign References:
| US20100032301 | ||||
| US4806226 |
Attorney, Agent or Firm:
Hiromichi Kobayashi