Water vapor corrosion behaviors of high-entropy pyrosilicates
In this study, the water vapor corrosion resistance of two types of high-entropy pyrosilicates ((Yb0.2Y0.2Lu0.2Ho0.2Er0.2)2Si2O7 ((5RE1/5)2Si2O7) and (Yb0.25Lu0.25Ho0.25Er0.25)2Si2O7 ((4RE1/4)2Si2O7)) and two single-component pyrosilicates (Yb2Si2O7 and Lu2Si2O7) were evaluated at 1350 °C for 50–100...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-09-01
|
| Series: | Journal of Materiomics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847822000351 |
| _version_ | 1827883212194447360 |
|---|---|
| author | Zeyu Chen Chucheng Lin Wei Zheng Caifen Jiang Yi Zeng Xuemei Song |
| author_facet | Zeyu Chen Chucheng Lin Wei Zheng Caifen Jiang Yi Zeng Xuemei Song |
| author_sort | Zeyu Chen |
| collection | DOAJ |
| description | In this study, the water vapor corrosion resistance of two types of high-entropy pyrosilicates ((Yb0.2Y0.2Lu0.2Ho0.2Er0.2)2Si2O7 ((5RE1/5)2Si2O7) and (Yb0.25Lu0.25Ho0.25Er0.25)2Si2O7 ((4RE1/4)2Si2O7)) and two single-component pyrosilicates (Yb2Si2O7 and Lu2Si2O7) were evaluated at 1350 °C for 50–100 h, and the initial corrosion behaviors of these pyrosilicates were studied. The results showed that the final corrosion products of the four types of pyrosilicates were all X2-type monosilicates, exhibiting similar corrosion phenomena. However, (4RE1/4)2Si2O7 generated many nanoscale monosilicate grains during corrosion. The corrosion resistance of Lu2Si2O7 was clearly better than those of the others, and (4RE1/4)2Si2O7 exhibited the worst corrosion resistance. The corrosion mechanism of the pyrosilicate blocks was analyzed from the perspectives of grain size, bulk hydrophobicity, and binding energy. This study potentially provides a theoretical basis for the preparation of high-entropy pyrosilicates with different atomic ratios according to the different properties of the various rare earth elements. |
| first_indexed | 2024-03-12T19:09:18Z |
| format | Article |
| id | doaj.art-94d0668fa748454881b22ae328fe2e1d |
| institution | Directory Open Access Journal |
| issn | 2352-8478 |
| language | English |
| last_indexed | 2024-03-12T19:09:18Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj.art-94d0668fa748454881b22ae328fe2e1d2023-08-02T06:03:38ZengElsevierJournal of Materiomics2352-84782022-09-01859921000Water vapor corrosion behaviors of high-entropy pyrosilicatesZeyu Chen0Chucheng Lin1Wei Zheng2Caifen Jiang3Yi Zeng4Xuemei Song5The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, ChinaThe State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, ChinaThe State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, ChinaThe State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, ChinaThe State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China; Corresponding author.The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China; Corresponding author.In this study, the water vapor corrosion resistance of two types of high-entropy pyrosilicates ((Yb0.2Y0.2Lu0.2Ho0.2Er0.2)2Si2O7 ((5RE1/5)2Si2O7) and (Yb0.25Lu0.25Ho0.25Er0.25)2Si2O7 ((4RE1/4)2Si2O7)) and two single-component pyrosilicates (Yb2Si2O7 and Lu2Si2O7) were evaluated at 1350 °C for 50–100 h, and the initial corrosion behaviors of these pyrosilicates were studied. The results showed that the final corrosion products of the four types of pyrosilicates were all X2-type monosilicates, exhibiting similar corrosion phenomena. However, (4RE1/4)2Si2O7 generated many nanoscale monosilicate grains during corrosion. The corrosion resistance of Lu2Si2O7 was clearly better than those of the others, and (4RE1/4)2Si2O7 exhibited the worst corrosion resistance. The corrosion mechanism of the pyrosilicate blocks was analyzed from the perspectives of grain size, bulk hydrophobicity, and binding energy. This study potentially provides a theoretical basis for the preparation of high-entropy pyrosilicates with different atomic ratios according to the different properties of the various rare earth elements.http://www.sciencedirect.com/science/article/pii/S2352847822000351Environmental barrier coatingsHigh-entropy pyrosilicatesWater vapor corrosion |
| spellingShingle | Zeyu Chen Chucheng Lin Wei Zheng Caifen Jiang Yi Zeng Xuemei Song Water vapor corrosion behaviors of high-entropy pyrosilicates Journal of Materiomics Environmental barrier coatings High-entropy pyrosilicates Water vapor corrosion |
| title | Water vapor corrosion behaviors of high-entropy pyrosilicates |
| title_full | Water vapor corrosion behaviors of high-entropy pyrosilicates |
| title_fullStr | Water vapor corrosion behaviors of high-entropy pyrosilicates |
| title_full_unstemmed | Water vapor corrosion behaviors of high-entropy pyrosilicates |
| title_short | Water vapor corrosion behaviors of high-entropy pyrosilicates |
| title_sort | water vapor corrosion behaviors of high entropy pyrosilicates |
| topic | Environmental barrier coatings High-entropy pyrosilicates Water vapor corrosion |
| url | http://www.sciencedirect.com/science/article/pii/S2352847822000351 |
| work_keys_str_mv | AT zeyuchen watervaporcorrosionbehaviorsofhighentropypyrosilicates AT chuchenglin watervaporcorrosionbehaviorsofhighentropypyrosilicates AT weizheng watervaporcorrosionbehaviorsofhighentropypyrosilicates AT caifenjiang watervaporcorrosionbehaviorsofhighentropypyrosilicates AT yizeng watervaporcorrosionbehaviorsofhighentropypyrosilicates AT xuemeisong watervaporcorrosionbehaviorsofhighentropypyrosilicates |