Title:
ARTIFACT-FREE SUPERELASTIC ALLOY
Document Type and Number:
WIPO Patent Application WO/2019/039298
Kind Code:
A1
Abstract:
The present invention is an artifact-free superelastic alloy which is made of an Au-Cu-Al alloy, is composed of 20 to 40 atomic percent of Cu, 15 to 25 atomic percent of Al, and the balance Au, and has a volume magnetic susceptibility of -24 to 6 ppm. This Ni-free superelastic alloy is an alloy capable of exhibiting superelasticity in a normal temperature range and is such that artifacts are less likely to be generated in a magnetic field environment. This alloy can be produced by carrying out casting for a fixed period of time during a melting and casting process, and hot-pressing the casted alloy and homogenizing the material structure.
Inventors:
HOSODA HIDEKI (JP)
UMISE AKIRA (JP)
GOTO KENJI (JP)
UMISE AKIRA (JP)
GOTO KENJI (JP)
Application Number:
PCT/JP2018/029910
Publication Date:
February 28, 2019
Filing Date:
August 09, 2018
Export Citation:
Assignee:
TOKYO INST TECH (JP)
TANAKA PRECIOUS METAL IND (JP)
TANAKA PRECIOUS METAL IND (JP)
International Classes:
C22C5/02; C22C30/02; C22F1/02; C22F1/14; A61L31/02; C22F1/00
Domestic Patent References:
| WO2010084948A1 | 2010-07-29 |
Foreign References:
| JP2015048485A | 2015-03-16 | |||
| JPH02185936A | 1990-07-20 | |||
| JP2015007277A | 2015-01-15 | |||
| JP2014084485A | 2014-05-12 | |||
| JP2015048485A | 2015-03-16 |
Other References:
See also references of EP 3674431A4
Attorney, Agent or Firm:
TANAKA AND OKAZAKI (JP)
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