Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite

Keith R. Hallam; James Edward Darnbrough; Charilaos Paraskevoulakos; Peter J. Heard; Thomas James Marrow; Peter E.J. Flewitt

doi:10.1016/j.cartre.2021.100071

Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite

Keith R. Hallam^*, James Edward Darnbrough, Charilaos Paraskevoulakos, Peter J. Heard, Thomas James Marrow, Peter E.J. Flewitt

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

25 Citations (Scopus)

Abstract

Synthetic polygranular graphites of various grades and manufacturing routes are used in nuclear reactors for power generation, and may be used in potential fourth generation and other advanced reactor designs that will operate at higher temperature. Attention is given in this paper to isostatically-moulded synthetic polygranular graphites with porosities in the range 8% to 18%. The lattice parameters a and c for the hexagonal graphite have been measured over the temperature range from room temperature to 800°C by x-ray diffraction. The variation with temperature of the crystal lattice parameters, coherence length (crystallite size) and microstrain are discussed with reference to the microstructure and the relative strength of the bonds in-plane and normal to the graphene layers.

Original language	English
Article number	100071
Journal	Carbon Trends
Volume	4
Early online date	10 Jun 2021
DOIs	https://doi.org/10.1016/j.cartre.2021.100071
Publication status	Published - 3 Jul 2021

Bibliographical note

Funding Information:
The authors thank EPSRC for providing funding for this programme of work (grant references EP/M018598/1 and EP/M018679/1) and Professor Houzheng Wu (Loughborough University) for provision of material and helpful discussions. PEJF thanks Wolfson College, Oxford for facilitating the collaboration.

Publisher Copyright:
© 2021 The Author(s)

Keywords

Crystallite size
Lattice parameter
Microstrain
Polygranular graphite
Temperature
X-ray diffraction

Access to Document

10.1016/j.cartre.2021.100071

Handle.net

Persistent link

Cite this

@article{f423b4d3fded4ef9bc5280387a74b871,

title = "Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite",

abstract = "Synthetic polygranular graphites of various grades and manufacturing routes are used in nuclear reactors for power generation, and may be used in potential fourth generation and other advanced reactor designs that will operate at higher temperature. Attention is given in this paper to isostatically-moulded synthetic polygranular graphites with porosities in the range 8% to 18%. The lattice parameters a and c for the hexagonal graphite have been measured over the temperature range from room temperature to 800°C by x-ray diffraction. The variation with temperature of the crystal lattice parameters, coherence length (crystallite size) and microstrain are discussed with reference to the microstructure and the relative strength of the bonds in-plane and normal to the graphene layers.",

keywords = "Crystallite size, Lattice parameter, Microstrain, Polygranular graphite, Temperature, X-ray diffraction",

author = "Hallam, {Keith R.} and Darnbrough, {James Edward} and Charilaos Paraskevoulakos and Heard, {Peter J.} and Marrow, {Thomas James} and Flewitt, {Peter E.J.}",

note = "Funding Information: The authors thank EPSRC for providing funding for this programme of work (grant references EP/M018598/1 and EP/M018679/1) and Professor Houzheng Wu (Loughborough University) for provision of material and helpful discussions. PEJF thanks Wolfson College, Oxford for facilitating the collaboration. Publisher Copyright: {\textcopyright} 2021 The Author(s)",

year = "2021",

month = jul,

day = "3",

doi = "10.1016/j.cartre.2021.100071",

language = "English",

volume = "4",

journal = "Carbon Trends",

issn = "2667-0569",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite

AU - Hallam, Keith R.

AU - Darnbrough, James Edward

AU - Paraskevoulakos, Charilaos

AU - Heard, Peter J.

AU - Marrow, Thomas James

AU - Flewitt, Peter E.J.

N1 - Funding Information: The authors thank EPSRC for providing funding for this programme of work (grant references EP/M018598/1 and EP/M018679/1) and Professor Houzheng Wu (Loughborough University) for provision of material and helpful discussions. PEJF thanks Wolfson College, Oxford for facilitating the collaboration. Publisher Copyright: © 2021 The Author(s)

PY - 2021/7/3

Y1 - 2021/7/3

N2 - Synthetic polygranular graphites of various grades and manufacturing routes are used in nuclear reactors for power generation, and may be used in potential fourth generation and other advanced reactor designs that will operate at higher temperature. Attention is given in this paper to isostatically-moulded synthetic polygranular graphites with porosities in the range 8% to 18%. The lattice parameters a and c for the hexagonal graphite have been measured over the temperature range from room temperature to 800°C by x-ray diffraction. The variation with temperature of the crystal lattice parameters, coherence length (crystallite size) and microstrain are discussed with reference to the microstructure and the relative strength of the bonds in-plane and normal to the graphene layers.

AB - Synthetic polygranular graphites of various grades and manufacturing routes are used in nuclear reactors for power generation, and may be used in potential fourth generation and other advanced reactor designs that will operate at higher temperature. Attention is given in this paper to isostatically-moulded synthetic polygranular graphites with porosities in the range 8% to 18%. The lattice parameters a and c for the hexagonal graphite have been measured over the temperature range from room temperature to 800°C by x-ray diffraction. The variation with temperature of the crystal lattice parameters, coherence length (crystallite size) and microstrain are discussed with reference to the microstructure and the relative strength of the bonds in-plane and normal to the graphene layers.

KW - Crystallite size

KW - Lattice parameter

KW - Microstrain

KW - Polygranular graphite

KW - Temperature

KW - X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=85118328882&partnerID=8YFLogxK

U2 - 10.1016/j.cartre.2021.100071

DO - 10.1016/j.cartre.2021.100071

M3 - Article (Academic Journal)

AN - SCOPUS:85118328882

SN - 2667-0569

VL - 4

JO - Carbon Trends

JF - Carbon Trends

M1 - 100071

ER -

Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite

Abstract

Bibliographical note

Keywords

Access to Document

Handle.net

Other files and links

Fingerprint

Carbon Trends June 2021

Cite this

Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite

Abstract

Bibliographical note

Keywords

Access to Document

Handle.net

Other files and links

Fingerprint

Datasets

Carbon Trends June 2021

Cite this