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, Fe3O4 and Fe2O3, and a silicate plagioclase, (Na,Ca)(Si,Al)4O...
Published in: | Coatings |
---|---|
Main Authors: | , , , , |
Format: | Text |
Language: | English |
Published: |
Multidisciplinary Digital Publishing Institute
2020
|
Subjects: | |
Online Access: | https://doi.org/10.3390/coatings10020100 |
id |
ftmdpi:oai:mdpi.com:/2079-6412/10/2/100/ |
---|---|
record_format |
openpolar |
spelling |
ftmdpi:oai:mdpi.com:/2079-6412/10/2/100/ 2023-08-20T04:06:21+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 2020-01-23 application/pdf https://doi.org/10.3390/coatings10020100 EN eng Multidisciplinary Digital Publishing Institute https://dx.doi.org/10.3390/coatings10020100 https://creativecommons.org/licenses/by/4.0/ Coatings; Volume 10; Issue 2; Pages: 100 CMAS EBCs TBCs volcanic ash crystallization thermal expansion hardness indentation fracture toughness viscosity Text 2020 ftmdpi https://doi.org/10.3390/coatings10020100 2023-07-31T23:02:04Z 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, Fe3O4 and Fe2O3, and a silicate plagioclase, (Na,Ca)(Si,Al)4O8, 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/cm3, 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. Text Eyjafjallajökull MDPI Open Access Publishing Coatings 10 2 100 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
CMAS EBCs TBCs volcanic ash crystallization thermal expansion hardness indentation fracture toughness viscosity |
spellingShingle |
CMAS EBCs TBCs volcanic ash crystallization thermal expansion hardness indentation fracture toughness viscosity 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 |
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, Fe3O4 and Fe2O3, and a silicate plagioclase, (Na,Ca)(Si,Al)4O8, 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/cm3, 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 |
Text |
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 |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/coatings10020100 |
genre |
Eyjafjallajökull |
genre_facet |
Eyjafjallajökull |
op_source |
Coatings; Volume 10; Issue 2; Pages: 100 |
op_relation |
https://dx.doi.org/10.3390/coatings10020100 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/coatings10020100 |
container_title |
Coatings |
container_volume |
10 |
container_issue |
2 |
container_start_page |
100 |
_version_ |
1774717363329957888 |