Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite
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-...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-07-01
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| Series: | Carbon Trends |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667056921000481 |
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| author | Keith R. Hallam James Edward Darnbrough Charilaos Paraskevoulakos Peter J. Heard T. James Marrow Peter E.J. Flewitt |
| author_facet | Keith R. Hallam James Edward Darnbrough Charilaos Paraskevoulakos Peter J. Heard T. James Marrow Peter E.J. Flewitt |
| author_sort | Keith R. Hallam |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-17T07:01:41Z |
| format | Article |
| id | doaj.art-0a47b6edefb04e76a53515e5e928e76c |
| institution | Directory Open Access Journal |
| issn | 2667-0569 |
| language | English |
| last_indexed | 2024-12-17T07:01:41Z |
| publishDate | 2021-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Trends |
| spelling | doaj.art-0a47b6edefb04e76a53515e5e928e76c2022-12-21T21:59:14ZengElsevierCarbon Trends2667-05692021-07-014100071Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphiteKeith R. Hallam0James Edward Darnbrough1Charilaos Paraskevoulakos2Peter J. Heard3T. James Marrow4Peter E.J. Flewitt5Interface Analysis Centre, School of Physics, HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 4TS, United Kingdom; Corresponding author.Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, United KingdomInterface Analysis Centre, School of Physics, HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 4TS, United KingdomInterface Analysis Centre, School of Physics, HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 4TS, United KingdomDepartment of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, United KingdomInterface Analysis Centre, School of Physics, HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 4TS, United Kingdom; School of Physics, HH Wills Physics Laboratory, Tyndall Avenue, Bristol, BS8 4TS, United KingdomSynthetic 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.http://www.sciencedirect.com/science/article/pii/S2667056921000481Polygranular graphiteX-ray diffractionTemperatureLattice parameterCrystallite sizeMicrostrain |
| spellingShingle | Keith R. Hallam James Edward Darnbrough Charilaos Paraskevoulakos Peter J. Heard T. James Marrow Peter E.J. Flewitt Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite Carbon Trends Polygranular graphite X-ray diffraction Temperature Lattice parameter Crystallite size Microstrain |
| title | Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite |
| title_full | Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite |
| title_fullStr | Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite |
| title_full_unstemmed | Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite |
| title_short | Measurements by x-ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically-pressed graphite |
| title_sort | measurements by x ray diffraction of the temperature dependence of lattice parameter and crystallite size for isostatically pressed graphite |
| topic | Polygranular graphite X-ray diffraction Temperature Lattice parameter Crystallite size Microstrain |
| url | http://www.sciencedirect.com/science/article/pii/S2667056921000481 |
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