Title:
ENERGIZED-TYPE SHAPE MEMORY ALLOY
Document Type and Number:
Japanese Patent JP2005126745
Kind Code:
A
Abstract:
To secure the use of an energized-type shape memory alloy in a proper state by determining the relation between a wire diameter and an electric current value.
The wire-shaped energized-type shape memory alloy 1 which is composed of an alloy having a composition containing 46.7% Ni, 45% Ti and 8.3% Cu and expands and contracts according to the presence or absence of energization is used within the range of an electric current value which satisfies, when x(μm) is a wire diameter and i(mA) is an electric current value to be applied, 0.7y≤i≤1.2y in the range of 38≤x≤48, where y(mA) is the function of x computed by y=0.3x2-22.3x+504.2.
Inventors:
SHIMIZU YUKIKO
KAYAMA TAKASHI
TOMA TAKAAKI
KAYAMA TAKASHI
TOMA TAKAAKI
Application Number:
JP2003361520A
Publication Date:
May 19, 2005
Filing Date:
October 22, 2003
Export Citation:
Assignee:
SONY CORP
International Classes:
C22C19/03; C22C14/00; H02N10/00; (IPC1-7): C22C19/03; H02N10/00
Attorney, Agent or Firm:
Yuji Komatsu
Masanobu Iwata
Masanobu Iwata