Title:
SURFACE TREATMENT METHOD FOR SHAPE MEMORY ALLOY
Document Type and Number:
Japanese Patent JP2010138471
Kind Code:
A
Abstract:
To provide a surface treatment method for a shape memory alloy, for securely improving corrosion resistance of the shape memory alloy without deteriorating its shape memory effect and biocompatibility, and can suppress elution of Ni ions causing a metal allergy.
An Ni-containing shape memory alloy is subjected to projection with fine particles having the average particle diameter of 30 to 80 μm, that is, subjected to fine particle peening so as to perform surface modification. As the shape memory alloy, e.g., a Ni-Ti base shape memory alloy is used. Vickers hardness (HV) of the fine particle to be projected is preferably ≥300.
COPYRIGHT: (C)2010,JPO&INPIT
Inventors:
HIROTA HARUKA
MATSUMURA YUKIKO
KIKUCHI SHOICHI
KOMODORI JUN
MATSUMURA YUKIKO
KIKUCHI SHOICHI
KOMODORI JUN
Application Number:
JP2008318304A
Publication Date:
June 24, 2010
Filing Date:
December 15, 2008
Export Citation:
Assignee:
KEIO GIJUKU
International Classes:
C22F1/10; B24C1/10; C22F1/18; C22C19/03; C22F1/00
Attorney, Agent or Firm:
Yuhei Kimori
Noriko Asano
Noriko Asano