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Title: Additive Manufacturing of Dense Hexagonal Boron Nitride Objects

Abstract

The feasibility of manufacturing hexagonal boron nitride objects via additive manufacturing techniques was investigated. It was demonstrated that it is possible to hot-extrude thermoplastic filaments containing uniformly distributed boron nitride particles with a volume concentration as high as 60% and that these thermoplastic filaments can be used as feedstock for 3D-printing objects using a fused deposition system. Objects 3D-printed by fused deposition were subsequently sintered at high temperature to obtain dense ceramic products. In a parallel study the behavior of hexagonal boron nitride in aqueous solutions was investigated. It was shown that the addition of a cationic dispersant to an azeotrope enabled the formulation of slurries with a volume concentration of boron nitride as high as 33%. Although these slurries exhibited complex rheological behavior, the results from this study are encouraging and provide a pathway for manufacturing hexagonal boron nitride objects via robocasting.

Authors:
 [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Manufacturing Demonstration Facility (MDF)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1357988
Report Number(s):
ORNL/TM-2017/244
ED2701000; CEED492; CRADA/NFE-16-06299
DOE Contract Number:
AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE

Citation Formats

Marquez Rossy, Andres E., Armstrong, Beth L., Elliott, Amy M., and Lara-Curzio, Edgar. Additive Manufacturing of Dense Hexagonal Boron Nitride Objects. United States: N. p., 2017. Web. doi:10.2172/1357988.
Marquez Rossy, Andres E., Armstrong, Beth L., Elliott, Amy M., & Lara-Curzio, Edgar. Additive Manufacturing of Dense Hexagonal Boron Nitride Objects. United States. doi:10.2172/1357988.
Marquez Rossy, Andres E., Armstrong, Beth L., Elliott, Amy M., and Lara-Curzio, Edgar. 2017. "Additive Manufacturing of Dense Hexagonal Boron Nitride Objects". United States. doi:10.2172/1357988. https://www.osti.gov/servlets/purl/1357988.
@article{osti_1357988,
title = {Additive Manufacturing of Dense Hexagonal Boron Nitride Objects},
author = {Marquez Rossy, Andres E. and Armstrong, Beth L. and Elliott, Amy M. and Lara-Curzio, Edgar},
abstractNote = {The feasibility of manufacturing hexagonal boron nitride objects via additive manufacturing techniques was investigated. It was demonstrated that it is possible to hot-extrude thermoplastic filaments containing uniformly distributed boron nitride particles with a volume concentration as high as 60% and that these thermoplastic filaments can be used as feedstock for 3D-printing objects using a fused deposition system. Objects 3D-printed by fused deposition were subsequently sintered at high temperature to obtain dense ceramic products. In a parallel study the behavior of hexagonal boron nitride in aqueous solutions was investigated. It was shown that the addition of a cationic dispersant to an azeotrope enabled the formulation of slurries with a volume concentration of boron nitride as high as 33%. Although these slurries exhibited complex rheological behavior, the results from this study are encouraging and provide a pathway for manufacturing hexagonal boron nitride objects via robocasting.},
doi = {10.2172/1357988},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2017,
month = 5
}

Technical Report:

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  • Synthesis of boron-carbon-nitride (BCN) hybrid alloys has been attempted extensively by many researchers because the BCN alloys are considered an extremely hard material called {open_quotes}super diamond,{close_quotes} and the industrial application for wear-resistant materials is promising. A mechanical alloying (MA) method of hexagonal boron nitride (h-BN) with graphite has recently been studied to explore the industrial synthesis of the BCN alloys. To develop the MA method for the BCN alloy synthesis, it is necessary to confirm the chemical reaction processes in the mechanical milling systems and to identify the reaction products. Therefore, the authors have attempted to confirm the chemical reactionmore » process of the h-BN and graphite in mechanical milling systems using x-ray absorption near edge structure (XANES) methods.« less
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