Development of Small-Volume, High-Precision, and Reliable Cryogenic Linear Actuators by Using Novel Intermetallic Compounds

Metadata Updated: May 2, 2019

Space missions often involve ultra-cold environments, and cryogenic actuators must be mechanically robust for long-term cyclic work, generate high power per volume, as well as perform high precision motion in such extreme environments. These demanding requirements have asked a material scientist to seek for a new type of actuator materials. Recently, we discovered a bulk-scale novel intermetallic compound CaFe2As2 that can exhibit superelastic deformation and ultra-high strength, which leads to unusually high actuation power per volume, 10~1000 times larger than most actuator materials, as well as cryogenic linear shape memory effects even near 0 K. The cryogenic linear actuation of this crystal is exceptionally repeatable, precise, and reliable with almost no fatigue damage, which would guarantee the long lifetime and high accuracy in actuation motion. Therefore, the research objective of this proposal is to develop a small-volume, high-precision and mechanically-robust cryogenic linear actuator by performing the combined set of works that include (1) large single crystal growth of novel intermetallic compound CaFe2As2 and related structures, (2) evaluation of their cryogenic linear actuation performance, (3) understanding of fundamental physics behind cryogenic actuation properties, and (4) development of proto-type linear actuators that operates at a temperature between 4 and 150 K.

Access & Use Information

Public: This dataset is intended for public access and use. License: U.S. Government Work

Downloads & Resources


Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date May 2, 2019
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_89398
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Datagov Dedupe Retained 20190501230127
Harvest Object Id 8b5cd46d-d8fa-4874-b0bb-9f8c1a8c066b
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2019-10-01
Homepage URL
Data Last Modified 2018-07-19
Program Code 026:027
Source Datajson Identifier True
Source Hash 2c48d72d0f8655d48872a235524d2f48cc353525
Source Schema Version 1.1

Didn't find what you're looking for? Suggest a dataset here.