Microstructure and antioxidation performance of porous Co–Al intermetallics synthesized by thermal explosion reaction under 1 °C/min heating rate
Abstract Porous Co-Al compounds with different Co/Al molar ratios were synthesized by thermal explosion (TE) reaction under 1 °C/min heating rate. Volume expansion behavior, microstructure, phase composition and antioxidation performance of Co-Al sintered specimens were researched and compared. Resu...
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| Format: | Article |
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Nature Portfolio
2025-07-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-07525-1 |
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| author | Junhua Zhang Dapeng Zhou Lei Qiao Yonghao Yu Chunmin Yang Xueqin Kang |
| author_facet | Junhua Zhang Dapeng Zhou Lei Qiao Yonghao Yu Chunmin Yang Xueqin Kang |
| author_sort | Junhua Zhang |
| collection | DOAJ |
| description | Abstract Porous Co-Al compounds with different Co/Al molar ratios were synthesized by thermal explosion (TE) reaction under 1 °C/min heating rate. Volume expansion behavior, microstructure, phase composition and antioxidation performance of Co-Al sintered specimens were researched and compared. Results showed that the sintered specimens under 1 °C/min heating rate were better to maintain the original shape, had an obvious dimension and volume expansion behavior, higher open porosity, superior antioxidation performance and the oxidation time to stable state was shorter compared with the intermetallics fabricated under 10 °C/min heating rate. The TE compact with molar ration of Co: Al = 2:9 had the largest volume expansion ratio of 109.6%, the highest open porosity of 52.8% and the lowest density of 1.47 g cm− 3 in all the Co/Al molar ratios compounds experimented in this study. |
| format | Article |
| id | doaj-art-b6c1e73e0e1d4fc78fa23a3e29d97776 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-b6c1e73e0e1d4fc78fa23a3e29d977762025-08-20T03:45:27ZengNature PortfolioScientific Reports2045-23222025-07-011511810.1038/s41598-025-07525-1Microstructure and antioxidation performance of porous Co–Al intermetallics synthesized by thermal explosion reaction under 1 °C/min heating rateJunhua Zhang0Dapeng Zhou1Lei Qiao2Yonghao Yu3Chunmin Yang4Xueqin Kang5Xuzhou Technician Branch, Jiangsu Union Technical InstituteChina Coal Technology Engineering Group, Huaibei Blasting Technology Research Institute Limited CompanyXuzhou XCMG Excavator Machinery Limited CompanyChina University of Mining and TechnologyChina University of Mining and TechnologyChina University of Mining and TechnologyAbstract Porous Co-Al compounds with different Co/Al molar ratios were synthesized by thermal explosion (TE) reaction under 1 °C/min heating rate. Volume expansion behavior, microstructure, phase composition and antioxidation performance of Co-Al sintered specimens were researched and compared. Results showed that the sintered specimens under 1 °C/min heating rate were better to maintain the original shape, had an obvious dimension and volume expansion behavior, higher open porosity, superior antioxidation performance and the oxidation time to stable state was shorter compared with the intermetallics fabricated under 10 °C/min heating rate. The TE compact with molar ration of Co: Al = 2:9 had the largest volume expansion ratio of 109.6%, the highest open porosity of 52.8% and the lowest density of 1.47 g cm− 3 in all the Co/Al molar ratios compounds experimented in this study.https://doi.org/10.1038/s41598-025-07525-1PorosityIntermetallicsHeating rateThermal explosionAntioxidation |
| spellingShingle | Junhua Zhang Dapeng Zhou Lei Qiao Yonghao Yu Chunmin Yang Xueqin Kang Microstructure and antioxidation performance of porous Co–Al intermetallics synthesized by thermal explosion reaction under 1 °C/min heating rate Scientific Reports Porosity Intermetallics Heating rate Thermal explosion Antioxidation |
| title | Microstructure and antioxidation performance of porous Co–Al intermetallics synthesized by thermal explosion reaction under 1 °C/min heating rate |
| title_full | Microstructure and antioxidation performance of porous Co–Al intermetallics synthesized by thermal explosion reaction under 1 °C/min heating rate |
| title_fullStr | Microstructure and antioxidation performance of porous Co–Al intermetallics synthesized by thermal explosion reaction under 1 °C/min heating rate |
| title_full_unstemmed | Microstructure and antioxidation performance of porous Co–Al intermetallics synthesized by thermal explosion reaction under 1 °C/min heating rate |
| title_short | Microstructure and antioxidation performance of porous Co–Al intermetallics synthesized by thermal explosion reaction under 1 °C/min heating rate |
| title_sort | microstructure and antioxidation performance of porous co al intermetallics synthesized by thermal explosion reaction under 1 °c min heating rate |
| topic | Porosity Intermetallics Heating rate Thermal explosion Antioxidation |
| url | https://doi.org/10.1038/s41598-025-07525-1 |
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