Transportation pathway of oxygen in the cage-to-cage network of barium–strontium aluminosilicates.
Saved in:
| Title: | Transportation pathway of oxygen in the cage-to-cage network of barium–strontium aluminosilicates. |
|---|---|
| Authors: | Gao, Dongxin1 (AUTHOR), Lin, Deye2,3 (AUTHOR), Ren, Ke1 (AUTHOR), Luan, Shiliang1 (AUTHOR), Zhao, Guangxu1 (AUTHOR), Wang, William Yi1,4 (AUTHOR) wywang@nwpu.edu.cn, Li, Jinshan4,5 (AUTHOR), Wang, Yiguang1 (AUTHOR) wangyiguang@bit.edu.cn |
| Source: | Ceramics International. May2023, Vol. 49 Issue 10, p16235-16244. 10p. |
| Subjects: | Isotope exchange reactions, Aluminum silicates, Activation energy, Oxygen, Chemical bond lengths |
| Abstract: | Oxygen transport through environmental barrier coating (EBC) to form thermally grown oxide (TGO) on the bond coat greatly affects the service life of the EBC when it is subjected to severe environments. In this work, the oxygen diffusion behaviours through barium–strontium aluminosilicates (BSAS), a typical EBC material, were investigated via ab initio molecular dynamic calculations. The results of these calculations are then verified via isotope exchange experiments. It was found that the interstitial oxygen can stably exist and diffuse through the BSAS. Three interlaced diffusion channels in the structure of BSAS were found to form a complete three-dimensional diffusion network. It was also found that the bond length of Si–Al–O can serve as a measure of the diffusion of interstitial molecular oxygen in BSAS. The oxygen permeability of BSAS can be decreased by adjusting the proportions of alkaline earth elements present in the structure, which modifies the bond lengths within the structure. The solution of alkaline earth elements increases the local migration energy barrier, leading to an increase in the overall migration energy barrier. [Display omitted] [ABSTRACT FROM AUTHOR] |
| Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 162894851 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Transportation pathway of oxygen in the cage-to-cage network of barium–strontium aluminosilicates. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Gao%2C+Dongxin%22">Gao, Dongxin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Deye%22">Lin, Deye</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ren%2C+Ke%22">Ren, Ke</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luan%2C+Shiliang%22">Luan, Shiliang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Guangxu%22">Zhao, Guangxu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+William+Yi%22">Wang, William Yi</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> wywang@nwpu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Jinshan%22">Li, Jinshan</searchLink><relatesTo>4,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Yiguang%22">Wang, Yiguang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wangyiguang@bit.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. May2023, Vol. 49 Issue 10, p16235-16244. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Isotope+exchange+reactions%22">Isotope exchange reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum+silicates%22">Aluminum silicates</searchLink><br /><searchLink fieldCode="DE" term="%22Activation+energy%22">Activation energy</searchLink><br /><searchLink fieldCode="DE" term="%22Oxygen%22">Oxygen</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+bond+lengths%22">Chemical bond lengths</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Oxygen transport through environmental barrier coating (EBC) to form thermally grown oxide (TGO) on the bond coat greatly affects the service life of the EBC when it is subjected to severe environments. In this work, the oxygen diffusion behaviours through barium–strontium aluminosilicates (BSAS), a typical EBC material, were investigated via ab initio molecular dynamic calculations. The results of these calculations are then verified via isotope exchange experiments. It was found that the interstitial oxygen can stably exist and diffuse through the BSAS. Three interlaced diffusion channels in the structure of BSAS were found to form a complete three-dimensional diffusion network. It was also found that the bond length of Si–Al–O can serve as a measure of the diffusion of interstitial molecular oxygen in BSAS. The oxygen permeability of BSAS can be decreased by adjusting the proportions of alkaline earth elements present in the structure, which modifies the bond lengths within the structure. The solution of alkaline earth elements increases the local migration energy barrier, leading to an increase in the overall migration energy barrier. [Display omitted] [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=162894851 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.ceramint.2023.01.221 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 16235 Subjects: – SubjectFull: Isotope exchange reactions Type: general – SubjectFull: Aluminum silicates Type: general – SubjectFull: Activation energy Type: general – SubjectFull: Oxygen Type: general – SubjectFull: Chemical bond lengths Type: general Titles: – TitleFull: Transportation pathway of oxygen in the cage-to-cage network of barium–strontium aluminosilicates. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Gao, Dongxin – PersonEntity: Name: NameFull: Lin, Deye – PersonEntity: Name: NameFull: Ren, Ke – PersonEntity: Name: NameFull: Luan, Shiliang – PersonEntity: Name: NameFull: Zhao, Guangxu – PersonEntity: Name: NameFull: Wang, William Yi – PersonEntity: Name: NameFull: Li, Jinshan – PersonEntity: Name: NameFull: Wang, Yiguang IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 05 Text: May2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 02728842 Numbering: – Type: volume Value: 49 – Type: issue Value: 10 Titles: – TitleFull: Ceramics International Type: main |
| ResultId | 1 |
