Investigation of mechanical properties and stored elastic energy-fragmentation of Al2O3-Cr2O3 ceramic system with increasing Cr2O3 content
In the present study, densification, mechanical properties (elastic modulus, hardness, flexural strength) and stored elastic energy-fragmentation of the pure Al2O3 and Al2O3-Cr2O3 ceramics with different Cr2O3 volume content (0.5, 1, 3, 5, 10 and 20 vol.%) were investigated. The fragmentation behavi...
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| Format: | Article |
| Language: | English |
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University of Novi Sad
2022-12-01
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| Series: | Processing and Application of Ceramics |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1820-6131/2022/1820-61312204351K.pdf |
| _version_ | 1797976774513000448 |
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| author | Kafkaslıoğlu Yıldız Betül Tür Yahya Kemal |
| author_facet | Kafkaslıoğlu Yıldız Betül Tür Yahya Kemal |
| author_sort | Kafkaslıoğlu Yıldız Betül |
| collection | DOAJ |
| description | In the present study, densification, mechanical properties (elastic modulus, hardness, flexural strength) and stored elastic energy-fragmentation of the pure Al2O3 and Al2O3-Cr2O3 ceramics with different Cr2O3 volume content (0.5, 1, 3, 5, 10 and 20 vol.%) were investigated. The fragmentation behaviour was interpreted from the point of armour application as larger fragments are required for higher penetration resistance. The equibiaxial flexural strength test method was used to measure the fracture strength values. A similar densification behaviour was obtained for the pure Al2O3 and the Al2O3-Cr2O3 ceramic specimens with 0.5, 10 and 20 vol.% Cr2O3 with the obtained relative densities of around 97%TD. The elastic modulus of the pure Al2O3 and Al2O3-Cr2O3 ceramic specimens showed consistent values with the densification except for the Al2O3-Cr2O3 ceramics containing 20 vol.% Cr2O3. All Al2O3-Cr2O3 ceramics have lower flexural strength values than the pure Al2O3. The pure Al2O3 had the smallest crack surface area accompanying the largest fragment size for given fracture energy. This indicates that the pure Al2O3 will break into larger pieces in case of a possible impact. |
| first_indexed | 2024-04-11T04:56:17Z |
| format | Article |
| id | doaj.art-38c8df9c81a04b32829919f243639a3c |
| institution | Directory Open Access Journal |
| issn | 1820-6131 2406-1034 |
| language | English |
| last_indexed | 2024-04-11T04:56:17Z |
| publishDate | 2022-12-01 |
| publisher | University of Novi Sad |
| record_format | Article |
| series | Processing and Application of Ceramics |
| spelling | doaj.art-38c8df9c81a04b32829919f243639a3c2022-12-26T12:00:45ZengUniversity of Novi SadProcessing and Application of Ceramics1820-61312406-10342022-12-0116435135710.2298/PAC2204351KInvestigation of mechanical properties and stored elastic energy-fragmentation of Al2O3-Cr2O3 ceramic system with increasing Cr2O3 contentKafkaslıoğlu Yıldız Betül0Tür Yahya Kemal1Department of Metallurgical and Materials Engineering, Sivas University of Science and Technology, Sivas, TurkeyDepartment of Materials Science and Engineering, Gebze Technical University, Gebze, TurkeyIn the present study, densification, mechanical properties (elastic modulus, hardness, flexural strength) and stored elastic energy-fragmentation of the pure Al2O3 and Al2O3-Cr2O3 ceramics with different Cr2O3 volume content (0.5, 1, 3, 5, 10 and 20 vol.%) were investigated. The fragmentation behaviour was interpreted from the point of armour application as larger fragments are required for higher penetration resistance. The equibiaxial flexural strength test method was used to measure the fracture strength values. A similar densification behaviour was obtained for the pure Al2O3 and the Al2O3-Cr2O3 ceramic specimens with 0.5, 10 and 20 vol.% Cr2O3 with the obtained relative densities of around 97%TD. The elastic modulus of the pure Al2O3 and Al2O3-Cr2O3 ceramic specimens showed consistent values with the densification except for the Al2O3-Cr2O3 ceramics containing 20 vol.% Cr2O3. All Al2O3-Cr2O3 ceramics have lower flexural strength values than the pure Al2O3. The pure Al2O3 had the smallest crack surface area accompanying the largest fragment size for given fracture energy. This indicates that the pure Al2O3 will break into larger pieces in case of a possible impact.http://www.doiserbia.nb.rs/img/doi/1820-6131/2022/1820-61312204351K.pdfaluminachromium oxidefracture strengthfragmentationelastic energy |
| spellingShingle | Kafkaslıoğlu Yıldız Betül Tür Yahya Kemal Investigation of mechanical properties and stored elastic energy-fragmentation of Al2O3-Cr2O3 ceramic system with increasing Cr2O3 content Processing and Application of Ceramics alumina chromium oxide fracture strength fragmentation elastic energy |
| title | Investigation of mechanical properties and stored elastic energy-fragmentation of Al2O3-Cr2O3 ceramic system with increasing Cr2O3 content |
| title_full | Investigation of mechanical properties and stored elastic energy-fragmentation of Al2O3-Cr2O3 ceramic system with increasing Cr2O3 content |
| title_fullStr | Investigation of mechanical properties and stored elastic energy-fragmentation of Al2O3-Cr2O3 ceramic system with increasing Cr2O3 content |
| title_full_unstemmed | Investigation of mechanical properties and stored elastic energy-fragmentation of Al2O3-Cr2O3 ceramic system with increasing Cr2O3 content |
| title_short | Investigation of mechanical properties and stored elastic energy-fragmentation of Al2O3-Cr2O3 ceramic system with increasing Cr2O3 content |
| title_sort | investigation of mechanical properties and stored elastic energy fragmentation of al2o3 cr2o3 ceramic system with increasing cr2o3 content |
| topic | alumina chromium oxide fracture strength fragmentation elastic energy |
| url | http://www.doiserbia.nb.rs/img/doi/1820-6131/2022/1820-61312204351K.pdf |
| work_keys_str_mv | AT kafkaslıogluyıldızbetul investigationofmechanicalpropertiesandstoredelasticenergyfragmentationofal2o3cr2o3ceramicsystemwithincreasingcr2o3content AT turyahyakemal investigationofmechanicalpropertiesandstoredelasticenergyfragmentationofal2o3cr2o3ceramicsystemwithincreasingcr2o3content |