Oxidation behavior of Al3BC3 powders at 800–1400 °C in ambient air
The non-isothermal and isothermal oxidation behavior of Al3BC3 powders at 800–1400 °C in the air was studied. The results revealed that the oxidation resistance of Al3BC3 powders was better than that of “Al8B4C7” powders. At 800–1100 °C, the sintering accelerated the adhesion between the aluminum bo...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542300042X |
| _version_ | 1797858809938444288 |
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| author | Bo Dong Chengji Deng Jinghui Di Jun Ding Qingyou Zhu Hao Liu Hongxi Zhu Chao Yu |
| author_facet | Bo Dong Chengji Deng Jinghui Di Jun Ding Qingyou Zhu Hao Liu Hongxi Zhu Chao Yu |
| author_sort | Bo Dong |
| collection | DOAJ |
| description | The non-isothermal and isothermal oxidation behavior of Al3BC3 powders at 800–1400 °C in the air was studied. The results revealed that the oxidation resistance of Al3BC3 powders was better than that of “Al8B4C7” powders. At 800–1100 °C, the sintering accelerated the adhesion between the aluminum borate layer and the Al3BC3 core. No micro-crack was observed on both surface and cross-section, thus effectively blocking the diffusion of oxygen and volatilization of reactant gases. The oxidation behavior changed due to the oxidation products growing into a rod shape higher than 1200 °C. The interlocking structure of Al18B4O33 micro-rods made the surface of oxidized powder porous. Therefore, the oxygen diffused quickly into Al3BC3 through the porous structure on its surface, leading to rapid oxidation. Jander model could deal with oxidation kinetics and be in good agreement with the experimental data. The calculated apparent activation energy of Al3BC3 powder was equal to 212.76 kJ/mol at 800–1100 °C. |
| first_indexed | 2024-04-09T21:19:21Z |
| format | Article |
| id | doaj.art-4b0e838a826044ef959dd7fdcf7e00fa |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:19:21Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj.art-4b0e838a826044ef959dd7fdcf7e00fa2023-03-28T06:45:53ZengElsevierJournal of Materials Research and Technology2238-78542023-03-0123670679Oxidation behavior of Al3BC3 powders at 800–1400 °C in ambient airBo Dong0Chengji Deng1Jinghui Di2Jun Ding3Qingyou Zhu4Hao Liu5Hongxi Zhu6Chao Yu7The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaCorresponding author.; The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, PR ChinaThe non-isothermal and isothermal oxidation behavior of Al3BC3 powders at 800–1400 °C in the air was studied. The results revealed that the oxidation resistance of Al3BC3 powders was better than that of “Al8B4C7” powders. At 800–1100 °C, the sintering accelerated the adhesion between the aluminum borate layer and the Al3BC3 core. No micro-crack was observed on both surface and cross-section, thus effectively blocking the diffusion of oxygen and volatilization of reactant gases. The oxidation behavior changed due to the oxidation products growing into a rod shape higher than 1200 °C. The interlocking structure of Al18B4O33 micro-rods made the surface of oxidized powder porous. Therefore, the oxygen diffused quickly into Al3BC3 through the porous structure on its surface, leading to rapid oxidation. Jander model could deal with oxidation kinetics and be in good agreement with the experimental data. The calculated apparent activation energy of Al3BC3 powder was equal to 212.76 kJ/mol at 800–1100 °C.http://www.sciencedirect.com/science/article/pii/S223878542300042XAl3BC3Ternary carbidesOxidationThermal stabilityVolatilization |
| spellingShingle | Bo Dong Chengji Deng Jinghui Di Jun Ding Qingyou Zhu Hao Liu Hongxi Zhu Chao Yu Oxidation behavior of Al3BC3 powders at 800–1400 °C in ambient air Journal of Materials Research and Technology Al3BC3 Ternary carbides Oxidation Thermal stability Volatilization |
| title | Oxidation behavior of Al3BC3 powders at 800–1400 °C in ambient air |
| title_full | Oxidation behavior of Al3BC3 powders at 800–1400 °C in ambient air |
| title_fullStr | Oxidation behavior of Al3BC3 powders at 800–1400 °C in ambient air |
| title_full_unstemmed | Oxidation behavior of Al3BC3 powders at 800–1400 °C in ambient air |
| title_short | Oxidation behavior of Al3BC3 powders at 800–1400 °C in ambient air |
| title_sort | oxidation behavior of al3bc3 powders at 800 1400 °c in ambient air |
| topic | Al3BC3 Ternary carbides Oxidation Thermal stability Volatilization |
| url | http://www.sciencedirect.com/science/article/pii/S223878542300042X |
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