Low Friction Surfaces for Low Temperature Applications, Phase I

Metadata Updated: May 2, 2019

Lunar and other extraterrestrial environments put extreme demands on moving mechanical components. Gears must continue to function and surfaces must continue to slide over a wide temperature range, the low end of which renders most conventional lubricants solidified while the high end vaporizes them, especially in a vacuum. Extremely long service lives are needed, and dust can cause abrasive damage. The solution is to use a high lubricity wear resistant solid, but not even all solid lubricants are suitable for the full range of challenges.

We propose to use a novel electrocodeposition process to produce a quasicrystalline coating on the surface of metal parts. Quasicrystals are a unique family of alloys having symmetries found nowhere else. They are exceptionally hard, with low surface energies. Quasicrystalline coatings have been demonstrated to be stable over wide temperature ranges and to have low friction over the entire range. Our process produces solid, high-density, low friction coatings on a variety of metal substrates. The coatings are stable for the long periods needed to achieve long operating lives. They are applied under relatively mild conditions using readily available equipment and can be applied to substrates of any shape or size.

In this project we will demonstrate the application of low friction coatings to gear alloys and show their low friction and wear properties over a temperature range that extends from above ambient to cryogenic.

Access & Use Information

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

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Dates

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_8185
Maintainer
TECHPORT SUPPORT
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://data.nasa.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Datagov Dedupe Retained 20190501230127
Harvest Object Id 7497171b-04a6-44fb-963f-cb99f108d17b
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2009-07-01
Homepage URL https://techport.nasa.gov/view/8185
License http://www.usa.gov/publicdomain/label/1.0/
Data Last Modified 2018-07-20
Program Code 026:027
Source Datajson Identifier True
Source Hash 73b142bdc9284788669b359e4cbc8909df12dbf6
Source Schema Version 1.1

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