Characterization of Thermochemical and Thermomechanical Properties of Eyjafjallajökull Volcanic Ash Glass
The properties of a volcanic ash glass obtained from the Eyjafjallajökull eruption of 2010 were studied. Crystallization experiments were carried out on bulk and powdered glass samples at temperatures between 900 and 1300 °C. Iron oxides, Fe 3 O 4 and Fe 2 O 3 , and a silicate plagioclase, (Na,Ca)(S...
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MDPI AG
2020
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Online Access: | https://doi.org/10.3390/coatings10020100 https://doaj.org/article/67d2b653b30e4ff7b871a42de780bbd2 |
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ftdoajarticles:oai:doaj.org/article:67d2b653b30e4ff7b871a42de780bbd2 2023-05-15T16:09:28+02:00 Characterization of Thermochemical and Thermomechanical Properties of Eyjafjallajökull Volcanic Ash Glass Rebekah I. Webster Narottam P. Bansal Jonathan A. Salem Elizabeth J. Opila Valerie L. Wiesner 2020-01-01T00:00:00Z https://doi.org/10.3390/coatings10020100 https://doaj.org/article/67d2b653b30e4ff7b871a42de780bbd2 EN eng MDPI AG https://www.mdpi.com/2079-6412/10/2/100 https://doaj.org/toc/2079-6412 2079-6412 doi:10.3390/coatings10020100 https://doaj.org/article/67d2b653b30e4ff7b871a42de780bbd2 Coatings, Vol 10, Iss 2, p 100 (2020) cmas ebcs tbcs volcanic ash crystallization thermal expansion hardness indentation fracture toughness viscosity Engineering (General). Civil engineering (General) TA1-2040 article 2020 ftdoajarticles https://doi.org/10.3390/coatings10020100 2022-12-31T01:32:11Z The properties of a volcanic ash glass obtained from the Eyjafjallajökull eruption of 2010 were studied. Crystallization experiments were carried out on bulk and powdered glass samples at temperatures between 900 and 1300 °C. Iron oxides, Fe 3 O 4 and Fe 2 O 3 , and a silicate plagioclase, (Na,Ca)(Si,Al) 4 O 8 , were observed. Bulk samples remained mostly amorphous after up to 40 h at temperature. Powdered glass samples showed increased crystallinity after heat treatment compared to bulk samples. The average coefficient of thermal expansion of the glass was 7.00 × 10 −6 K −1 over 25−720 °C. The Vickers hardness of the glass was 6−7 GPa and the indentation fracture toughness, 1−2 MPa √m Values for density, elastic modulus, and Poisson’s ratio were 2.52 g/cm 3 , 75 GPa, and 0.24, respectively. The viscosity of the glass was determined experimentally and compared to three common models from the literature. The implications for the deposition of volcanic ash on hot section components of aircraft turbine engines are discussed. Article in Journal/Newspaper Eyjafjallajökull Directory of Open Access Journals: DOAJ Articles Coatings 10 2 100 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
cmas ebcs tbcs volcanic ash crystallization thermal expansion hardness indentation fracture toughness viscosity Engineering (General). Civil engineering (General) TA1-2040 |
spellingShingle |
cmas ebcs tbcs volcanic ash crystallization thermal expansion hardness indentation fracture toughness viscosity Engineering (General). Civil engineering (General) TA1-2040 Rebekah I. Webster Narottam P. Bansal Jonathan A. Salem Elizabeth J. Opila Valerie L. Wiesner Characterization of Thermochemical and Thermomechanical Properties of Eyjafjallajökull Volcanic Ash Glass |
topic_facet |
cmas ebcs tbcs volcanic ash crystallization thermal expansion hardness indentation fracture toughness viscosity Engineering (General). Civil engineering (General) TA1-2040 |
description |
The properties of a volcanic ash glass obtained from the Eyjafjallajökull eruption of 2010 were studied. Crystallization experiments were carried out on bulk and powdered glass samples at temperatures between 900 and 1300 °C. Iron oxides, Fe 3 O 4 and Fe 2 O 3 , and a silicate plagioclase, (Na,Ca)(Si,Al) 4 O 8 , were observed. Bulk samples remained mostly amorphous after up to 40 h at temperature. Powdered glass samples showed increased crystallinity after heat treatment compared to bulk samples. The average coefficient of thermal expansion of the glass was 7.00 × 10 −6 K −1 over 25−720 °C. The Vickers hardness of the glass was 6−7 GPa and the indentation fracture toughness, 1−2 MPa √m Values for density, elastic modulus, and Poisson’s ratio were 2.52 g/cm 3 , 75 GPa, and 0.24, respectively. The viscosity of the glass was determined experimentally and compared to three common models from the literature. The implications for the deposition of volcanic ash on hot section components of aircraft turbine engines are discussed. |
format |
Article in Journal/Newspaper |
author |
Rebekah I. Webster Narottam P. Bansal Jonathan A. Salem Elizabeth J. Opila Valerie L. Wiesner |
author_facet |
Rebekah I. Webster Narottam P. Bansal Jonathan A. Salem Elizabeth J. Opila Valerie L. Wiesner |
author_sort |
Rebekah I. Webster |
title |
Characterization of Thermochemical and Thermomechanical Properties of Eyjafjallajökull Volcanic Ash Glass |
title_short |
Characterization of Thermochemical and Thermomechanical Properties of Eyjafjallajökull Volcanic Ash Glass |
title_full |
Characterization of Thermochemical and Thermomechanical Properties of Eyjafjallajökull Volcanic Ash Glass |
title_fullStr |
Characterization of Thermochemical and Thermomechanical Properties of Eyjafjallajökull Volcanic Ash Glass |
title_full_unstemmed |
Characterization of Thermochemical and Thermomechanical Properties of Eyjafjallajökull Volcanic Ash Glass |
title_sort |
characterization of thermochemical and thermomechanical properties of eyjafjallajökull volcanic ash glass |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/coatings10020100 https://doaj.org/article/67d2b653b30e4ff7b871a42de780bbd2 |
genre |
Eyjafjallajökull |
genre_facet |
Eyjafjallajökull |
op_source |
Coatings, Vol 10, Iss 2, p 100 (2020) |
op_relation |
https://www.mdpi.com/2079-6412/10/2/100 https://doaj.org/toc/2079-6412 2079-6412 doi:10.3390/coatings10020100 https://doaj.org/article/67d2b653b30e4ff7b871a42de780bbd2 |
op_doi |
https://doi.org/10.3390/coatings10020100 |
container_title |
Coatings |
container_volume |
10 |
container_issue |
2 |
container_start_page |
100 |
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1766405353500573696 |