Plasma Spray Synthesis of High Purity Boron Nitride Nanotubes

Metadata Updated: July 17, 2020

The objective of this project is the efficient synthesis of high quality boron nitride nanotubes (BNNT[HTML_REMOVED]s) using the LaRC radio frequency plasma spray (RFPS) facility.[HTML_REMOVED] Efficient synthesis implies large quantities via a reliable and readily-scalable process.[HTML_REMOVED] High quality infers a product of high purity with an abundance of defect-free, small diameter nanotubes. Compared with carbon nanotubes, BNNT[HTML_REMOVED]s possess better mechanical properties and are thermally stable to much higher temperatures. The potential benefits of BNNT-reinforced structural materials can only be explored if commercial quantities of high purity, low defect BNNT[HTML_REMOVED]s are available to the aerospace industry.[HTML_REMOVED]The majority of nanotube production for structural composires is focused on generating [HTML_REMOVED]yarn[HTML_REMOVED] for continuous reinforcement of polymer-based matrices.[HTML_REMOVED] The goal of this effort is to synthesize relatively short [HTML_REMOVED]fibers[HTML_REMOVED] for discontinuous reinforcement of metal- or ceramic-based matrices.A novel combination of the RFPS process with a chemical reaction chamber for rapid, in-situ synthesis is envisioned.[HTML_REMOVED] The effort will draw on extensive work performed in Russia during the 1980[HTML_REMOVED]s (Tumanov, et al.).[HTML_REMOVED] Their nuclear industry developed [HTML_REMOVED]plasma-chemical synthesis[HTML_REMOVED] of nano-sized powders of metal oxides, carbides and nitrides.[HTML_REMOVED] The lack of consumable electrodes and the confined environment characteristic of RFPS offer big advantages over the DC and atmospheric plasma techniques employed in the prior work.[HTML_REMOVED] It is anticipated that the approach will yield abundant quantities of high purity nanotubes of the order of 10 microns long.[HTML_REMOVED] A goal will be to separate single- and multi-walled species during the process.[HTML_REMOVED]

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Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date August 1, 2018
Metadata Updated Date July 17, 2020

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date August 1, 2018
Metadata Updated Date July 17, 2020
Publisher Space Technology Mission Directorate
Unique Identifier TECHPORT_12028
Maintainer Email
Public Access Level public
Bureau Code 026:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id d94d68de-de78-4d39-b441-612cf6f1328f
Harvest Source Id 39e4ad2a-47ca-4507-8258-852babd0fd99
Harvest Source Title NASA Data.json
Data First Published 2014-01-01
Homepage URL
Data Last Modified 2020-01-29
Program Code 026:027
Source Datajson Identifier True
Source Hash fb3f9a6040f115407771eb5e27a375f5f84df9c1
Source Schema Version 1.1

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