Title:
TECHNIQUES FOR PRODUCING SMA MATERIALS AND POWDERS
Document Type and Number:
WIPO Patent Application WO/2018/106329
Kind Code:
A3
Abstract:
Embodiments of the present disclosure provide improved techniques for creating SMA materials and SMA powders. SMA materials and powders formed may be used to form porous structures suitable for applications such as biomaterials, damping applications, actuators, and/or sensors. Embodiments for performing hydriding and dehydriding of SMA wires at low pressure and low temperature are provided. Methods may be used to produce a shape memory alloy (SMA) powder. Such methods may include hydriding a length SMA wire under low pressure for a period of time to produce a length of hydrided SMA wire, crushing the length of hydrided SMA wire to form a hydrided SMA powder, and dehydriding the hydrided SMA powder to form a dehydrided SMA powder.
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Inventors:
YOUNG MARCUS LYNN (US)
SNIRS YOAV (US)
SNIRS YOAV (US)
Application Number:
PCT/US2017/054470
Publication Date:
September 27, 2018
Filing Date:
September 29, 2017
Export Citation:
Assignee:
UNIV NORTH TEXAS (US)
International Classes:
C22C19/03; F16D121/32
Other References:
SHAO ET AL.: "Preparing TiNiNb shape memory alloy powders by hydriding-dehydriding process", SMART MATERIALS AND STRUCTURES, vol. 25, no. 7, 24 June 2016 (2016-06-24), pages 1 - 7, XP020305723
MINETA ET AL.: "Batch fabricated flat meandering shape memory alloy actuator for active catheter", SENSORS AND ACTUATORS A: PHYSICAL, vol. 88, no. 12, 15 February 2001 (2001-02-15), pages 112 - 120, XP055555851
YOKOYAMA ET AL.: "Delayed fracture of Ni-Ti superelastic alloys in acidic and neutral fluoride solutions", JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, 29 January 2004 (2004-01-29), pages 105 - 113, XP055555859
SCHMIDT ET AL.: "Hydrogen solubility and diffusion in the shapememory alloy NiTi", JOURNAL OF PHYSICS: CONDENSED MATTE R, vol. 1, no. 14, 1989, pages 1 - 11, XP020057033
SNIR ET AL., EFFECTS OF HYDROGEN CHARGING ON THE PHASE TRANSFORMATION OF MARTENSITIC NITI SHAPE MEMORY ALLOY WIRES, 3 November 2017 (2017-11-03), pages 443 - 456
MINETA ET AL.: "Batch fabricated flat meandering shape memory alloy actuator for active catheter", SENSORS AND ACTUATORS A: PHYSICAL, vol. 88, no. 12, 15 February 2001 (2001-02-15), pages 112 - 120, XP055555851
YOKOYAMA ET AL.: "Delayed fracture of Ni-Ti superelastic alloys in acidic and neutral fluoride solutions", JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, 29 January 2004 (2004-01-29), pages 105 - 113, XP055555859
SCHMIDT ET AL.: "Hydrogen solubility and diffusion in the shapememory alloy NiTi", JOURNAL OF PHYSICS: CONDENSED MATTE R, vol. 1, no. 14, 1989, pages 1 - 11, XP020057033
SNIR ET AL., EFFECTS OF HYDROGEN CHARGING ON THE PHASE TRANSFORMATION OF MARTENSITIC NITI SHAPE MEMORY ALLOY WIRES, 3 November 2017 (2017-11-03), pages 443 - 456
Attorney, Agent or Firm:
REES, Nathan (US)
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