The effects of β-Si3N4 on the formation and oxidation of β-SiAlON
The influence of the additive β-Si3N4 on the formation and oxidation of Si4Al2O2N6 during the sintering of Al, Si, and Al2O3 powders under flowing nitrogen atmosphere was examined. An increasing molar percentage of β-Si3N4 was shown to alter the morphology of Si4Al2O2N6 from a fiber-like to a rod-li...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2020-06-01
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| Series: | High Temperature Materials and Processes |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/htmp-2020-0057 |
| _version_ | 1818650777728581632 |
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| author | Liu Xin Qu Dianli Luo Xudong Guo Yuxiang Cui Yan |
| author_facet | Liu Xin Qu Dianli Luo Xudong Guo Yuxiang Cui Yan |
| author_sort | Liu Xin |
| collection | DOAJ |
| description | The influence of the additive β-Si3N4 on the formation and oxidation of Si4Al2O2N6 during the sintering of Al, Si, and Al2O3 powders under flowing nitrogen atmosphere was examined. An increasing molar percentage of β-Si3N4 was shown to alter the morphology of Si4Al2O2N6 from a fiber-like to a rod-like structure and also shortened the time needed to form a dense, continuous oxide layer, which served as a barrier to the diffusion of O2. An optimal molar percentage of β-Si3N4 of 29.9 mol% was discovered, at which the grain growth was enhanced, and the surface area was, in turn, reduced, yielding superior resistance to oxidation. Our results provided a theoretical basis for the formation of β-SiAlON and demonstrated the potential of its use in high-temperature oxidizing environments. |
| first_indexed | 2024-12-17T01:55:37Z |
| format | Article |
| id | doaj.art-45636c3b18e4453a86956a5d6ae08e5c |
| institution | Directory Open Access Journal |
| issn | 0334-6455 2191-0324 |
| language | English |
| last_indexed | 2024-12-17T01:55:37Z |
| publishDate | 2020-06-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | High Temperature Materials and Processes |
| spelling | doaj.art-45636c3b18e4453a86956a5d6ae08e5c2022-12-21T22:07:59ZengDe GruyterHigh Temperature Materials and Processes0334-64552191-03242020-06-0139124725510.1515/htmp-2020-0057htmp-2020-0057The effects of β-Si3N4 on the formation and oxidation of β-SiAlONLiu Xin0Qu Dianli1Luo Xudong2Guo Yuxiang3Cui Yan4School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, ChinaSchool of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, ChinaSchool of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, ChinaSchool of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, ChinaSchool of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, ChinaThe influence of the additive β-Si3N4 on the formation and oxidation of Si4Al2O2N6 during the sintering of Al, Si, and Al2O3 powders under flowing nitrogen atmosphere was examined. An increasing molar percentage of β-Si3N4 was shown to alter the morphology of Si4Al2O2N6 from a fiber-like to a rod-like structure and also shortened the time needed to form a dense, continuous oxide layer, which served as a barrier to the diffusion of O2. An optimal molar percentage of β-Si3N4 of 29.9 mol% was discovered, at which the grain growth was enhanced, and the surface area was, in turn, reduced, yielding superior resistance to oxidation. Our results provided a theoretical basis for the formation of β-SiAlON and demonstrated the potential of its use in high-temperature oxidizing environments.https://doi.org/10.1515/htmp-2020-0057β-sialonβ-si3n4microstructureoxidation |
| spellingShingle | Liu Xin Qu Dianli Luo Xudong Guo Yuxiang Cui Yan The effects of β-Si3N4 on the formation and oxidation of β-SiAlON High Temperature Materials and Processes β-sialon β-si3n4 microstructure oxidation |
| title | The effects of β-Si3N4 on the formation and oxidation of β-SiAlON |
| title_full | The effects of β-Si3N4 on the formation and oxidation of β-SiAlON |
| title_fullStr | The effects of β-Si3N4 on the formation and oxidation of β-SiAlON |
| title_full_unstemmed | The effects of β-Si3N4 on the formation and oxidation of β-SiAlON |
| title_short | The effects of β-Si3N4 on the formation and oxidation of β-SiAlON |
| title_sort | effects of β si3n4 on the formation and oxidation of β sialon |
| topic | β-sialon β-si3n4 microstructure oxidation |
| url | https://doi.org/10.1515/htmp-2020-0057 |
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