Title:
SHAPE-MEMORY ALLOY AND SHAPE-MEMORY ALLOY WIRE
Document Type and Number:
WIPO Patent Application WO/2019/168081
Kind Code:
A1
Abstract:
This shape-memory alloy comprises an Au-Cu-Al alloy containing 20-40 at% of Cu and 15-30 at% of Al, with the remainder being Au and unavoidable impurities, and has a Vickers hardness of at most 360 Hv. The Au-Cu-Al alloy is able to exhibit both biocompatibility and a shape-memory effect, and further can provide an artifact-free effect in a magnetic environment. The Au-Cu-Al alloy can be produced by heating, at 500-700°C, a clad material obtained by combining a hollow material made of an Au-Cu alloy with a core material made of metallic aluminum.
Inventors:
HOSODA HIDEKI (JP)
UMISE AKIRA (JP)
GOTO KENJI (JP)
UMISE AKIRA (JP)
GOTO KENJI (JP)
Application Number:
PCT/JP2019/007752
Publication Date:
September 06, 2019
Filing Date:
February 28, 2019
Export Citation:
Assignee:
TOKYO INST TECH (JP)
TANAKA PRECIOUS METAL IND (JP)
TANAKA PRECIOUS METAL IND (JP)
International Classes:
C22C5/02; A61C7/00; A61C8/00; A61C13/267; A61F2/86; A61L31/02; A61M25/00; A61M25/09; C22F1/14; C22F1/00
Domestic Patent References:
| WO2010084948A1 | 2010-07-29 | |||
| WO2019039298A1 | 2019-02-28 |
Foreign References:
| JPH0313535A | 1991-01-22 | |||
| JP2015048485A | 2015-03-16 | |||
| CN101565783A | 2009-10-28 | |||
| JP2017158608A | 2017-09-14 |
Other References:
HOSODA HIDEKI ET AL.: "Effect of AL and CU contents on mechanical properties of Au-Cu-Al shape memory alloys", JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS, vol. 80, no. 1, 27 November 2015 (2015-11-27), pages 27 - 36, XP055634062, ISSN: 1880-6880
Attorney, Agent or Firm:
TANAKA AND OKAZAKI (JP)
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