Experimental study on the dynamic mechanical behaviors of silicon carbide ceramic after thermal shock
As a potential substitute material for metal and concrete in producing nuclear waste storage canisters, silicon carbide (SiC) can be subjected to various mechanical and thermal influences during its lifetime. To investigate the reliability of SiC in situ, especially in unusual cases involving impact...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-08-01
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| Series: | Nuclear Materials and Energy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179120300508 |
| _version_ | 1819021935336488960 |
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| author | Xiang Li Kai Zhang Heinz Konietzky Yan Wang Xibing Li |
| author_facet | Xiang Li Kai Zhang Heinz Konietzky Yan Wang Xibing Li |
| author_sort | Xiang Li |
| collection | DOAJ |
| description | As a potential substitute material for metal and concrete in producing nuclear waste storage canisters, silicon carbide (SiC) can be subjected to various mechanical and thermal influences during its lifetime. To investigate the reliability of SiC in situ, especially in unusual cases involving impact load and high temperature, dynamic mechanical tests are performed on heated SiC utilizing the Split Hopkinson Pressure Bar (SHPB) system. Before the mechanical tests, thermal shock (TS) treatments are applied on the SiC specimens before the mechanical tests, where the heated specimens are cooled in air and water to provide different cooling rates. The test results indicate no discernable variation of dynamic compressive strength after heating at 100 °C. Evident drop of strength value is observed at heating levels higher than 200 °C. It is also found that with approximately the same incident energy, the energy absorbed by the specimen decreases with ascending cooling rate. The scanning electron microscopy (SEM) technique is also utilized to provide explanations for the corresponding test results whereby the damage mechanisms of thermal shock on SiC are analyzed. |
| first_indexed | 2024-12-21T04:15:00Z |
| format | Article |
| id | doaj.art-e1869454fe114e82b5fa6ef2f81d7488 |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-12-21T04:15:00Z |
| publishDate | 2020-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-e1869454fe114e82b5fa6ef2f81d74882022-12-21T19:16:21ZengElsevierNuclear Materials and Energy2352-17912020-08-0124100774Experimental study on the dynamic mechanical behaviors of silicon carbide ceramic after thermal shockXiang Li0Kai Zhang1Heinz Konietzky2Yan Wang3Xibing Li4School of Resources and Safety Engineering, Central South University, Changsha 410083, China; School of Civil Engineering, Sun Yat-sen University, Zhuhai 519082, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaChair for Rock Mechanics, Geotechnical Institute, TU Bergakademie Freiberg, Gustav-Zeuner-Str. 1, 09596 Freiberg, GermanyState Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; Corresponding authors.School of Resources and Safety Engineering, Central South University, Changsha 410083, China; Corresponding authors.As a potential substitute material for metal and concrete in producing nuclear waste storage canisters, silicon carbide (SiC) can be subjected to various mechanical and thermal influences during its lifetime. To investigate the reliability of SiC in situ, especially in unusual cases involving impact load and high temperature, dynamic mechanical tests are performed on heated SiC utilizing the Split Hopkinson Pressure Bar (SHPB) system. Before the mechanical tests, thermal shock (TS) treatments are applied on the SiC specimens before the mechanical tests, where the heated specimens are cooled in air and water to provide different cooling rates. The test results indicate no discernable variation of dynamic compressive strength after heating at 100 °C. Evident drop of strength value is observed at heating levels higher than 200 °C. It is also found that with approximately the same incident energy, the energy absorbed by the specimen decreases with ascending cooling rate. The scanning electron microscopy (SEM) technique is also utilized to provide explanations for the corresponding test results whereby the damage mechanisms of thermal shock on SiC are analyzed.http://www.sciencedirect.com/science/article/pii/S2352179120300508SiCThermal shockSHPBDynamic loadEnergy analysis |
| spellingShingle | Xiang Li Kai Zhang Heinz Konietzky Yan Wang Xibing Li Experimental study on the dynamic mechanical behaviors of silicon carbide ceramic after thermal shock Nuclear Materials and Energy SiC Thermal shock SHPB Dynamic load Energy analysis |
| title | Experimental study on the dynamic mechanical behaviors of silicon carbide ceramic after thermal shock |
| title_full | Experimental study on the dynamic mechanical behaviors of silicon carbide ceramic after thermal shock |
| title_fullStr | Experimental study on the dynamic mechanical behaviors of silicon carbide ceramic after thermal shock |
| title_full_unstemmed | Experimental study on the dynamic mechanical behaviors of silicon carbide ceramic after thermal shock |
| title_short | Experimental study on the dynamic mechanical behaviors of silicon carbide ceramic after thermal shock |
| title_sort | experimental study on the dynamic mechanical behaviors of silicon carbide ceramic after thermal shock |
| topic | SiC Thermal shock SHPB Dynamic load Energy analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2352179120300508 |
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