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Title: High-temperature tensile cell for in situ real-time investigation of carbon fibre carbonization and graphitization processes

Abstract

A new high-temperature fibre tensile cell is described, developed for use at the Advanced Photon Source at Argonne National Laboratory to enable the investigation of the carbonization and graphitization processes during carbon fibre production. This cell is used to heat precursor fibre bundles to temperatures up to ~2300°C in a controlled inert atmosphere, while applying tensile stress to facilitate formation of highly oriented graphitic microstructure; evolution of the microstructure as a function of temperature and time during the carbonization and higher-temperature graphitization processes can then be monitored by collecting real-time wide-angle X-ray diffraction (WAXD) patterns. As an example, the carbonization and graphitization behaviour of an oxidized polyacrylonitrile fibre was studied up to a temperature of ~1750°C. Real-time WAXD revealed the gradual increase in microstructure alignment with the fibre axis with increasing temperature over the temperature range 600–1100°C. Above 1100°C, no further changes in orientation were observed. The overall magnitude of change increased with increasing applied tensile stress during carbonization. As a second example, the high-temperature graphitizability of PAN- and pitch-derived commercial carbon fibres was studied. Here, the magnitude of graphitic microstructure evolution of the pitch-derived fibre far exceeded that of the PAN-derived fibres at temperatures up to ~2300°C, indicating itsmore » facile graphitizability.« less

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
INDUSTRY
OSTI Identifier:
1332567
Resource Type:
Journal Article
Journal Name:
Journal of Synchrotron Radiation (Online)
Additional Journal Information:
Journal Volume: 23; Journal Issue: 6; Journal ID: ISSN 1600-5775
Publisher:
International Union of Crystallography
Country of Publication:
United States
Language:
ENGLISH

Citation Formats

Behr, Michael, Rix, James, Landes, Brian, Barton, Bryan, Billovits, Gerry, Hukkanen, Eric, Patton, Jasson, Wang, Weijun, Keane, Denis, and Weigand, Steven. High-temperature tensile cell for in situ real-time investigation of carbon fibre carbonization and graphitization processes. United States: N. p., 2016. Web. doi:10.1107/S1600577516014181.
Behr, Michael, Rix, James, Landes, Brian, Barton, Bryan, Billovits, Gerry, Hukkanen, Eric, Patton, Jasson, Wang, Weijun, Keane, Denis, & Weigand, Steven. High-temperature tensile cell for in situ real-time investigation of carbon fibre carbonization and graphitization processes. United States. doi:10.1107/S1600577516014181.
Behr, Michael, Rix, James, Landes, Brian, Barton, Bryan, Billovits, Gerry, Hukkanen, Eric, Patton, Jasson, Wang, Weijun, Keane, Denis, and Weigand, Steven. Mon . "High-temperature tensile cell for in situ real-time investigation of carbon fibre carbonization and graphitization processes". United States. doi:10.1107/S1600577516014181.
@article{osti_1332567,
title = {High-temperature tensile cell for in situ real-time investigation of carbon fibre carbonization and graphitization processes},
author = {Behr, Michael and Rix, James and Landes, Brian and Barton, Bryan and Billovits, Gerry and Hukkanen, Eric and Patton, Jasson and Wang, Weijun and Keane, Denis and Weigand, Steven},
abstractNote = {A new high-temperature fibre tensile cell is described, developed for use at the Advanced Photon Source at Argonne National Laboratory to enable the investigation of the carbonization and graphitization processes during carbon fibre production. This cell is used to heat precursor fibre bundles to temperatures up to ~2300°C in a controlled inert atmosphere, while applying tensile stress to facilitate formation of highly oriented graphitic microstructure; evolution of the microstructure as a function of temperature and time during the carbonization and higher-temperature graphitization processes can then be monitored by collecting real-time wide-angle X-ray diffraction (WAXD) patterns. As an example, the carbonization and graphitization behaviour of an oxidized polyacrylonitrile fibre was studied up to a temperature of ~1750°C. Real-time WAXD revealed the gradual increase in microstructure alignment with the fibre axis with increasing temperature over the temperature range 600–1100°C. Above 1100°C, no further changes in orientation were observed. The overall magnitude of change increased with increasing applied tensile stress during carbonization. As a second example, the high-temperature graphitizability of PAN- and pitch-derived commercial carbon fibres was studied. Here, the magnitude of graphitic microstructure evolution of the pitch-derived fibre far exceeded that of the PAN-derived fibres at temperatures up to ~2300°C, indicating its facile graphitizability.},
doi = {10.1107/S1600577516014181},
journal = {Journal of Synchrotron Radiation (Online)},
issn = {1600-5775},
number = 6,
volume = 23,
place = {United States},
year = {2016},
month = {10}
}

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