Effect of graphene orientation on microstructure and mechanical properties of silicon nitride ceramics
Mechanical properties and microstructure of graphene platelets reinforced Si3N4 composites have been investigated and compared to monolithic Si3N4. The microstructure shows that graphene platelets are parallel to each other and perpendicular to the hot pressing direction. Fracture toughness and flex...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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University of Novi Sad
2018-03-01
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| Series: | Processing and Application of Ceramics |
| Subjects: | |
| Online Access: | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2039%2005.pdf |
| _version_ | 1818366622590566400 |
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| author | Yubing Zhang Guangchun Xiao Mingdong Yi Chonghai Xu |
| author_facet | Yubing Zhang Guangchun Xiao Mingdong Yi Chonghai Xu |
| author_sort | Yubing Zhang |
| collection | DOAJ |
| description | Mechanical properties and microstructure of graphene platelets reinforced Si3N4 composites have been investigated and compared to monolithic Si3N4. The microstructure shows that graphene platelets are parallel to each other and perpendicular to the hot pressing direction. Fracture toughness and flexural strength of composite with 1 wt.% graphene measured on polished surface perpendicular to hot pressing direction are 8.7 MPa·m1/2 and 892 MPa, respectively, which are increased about 14.5% and 20.2% compared with that parallel to hot pressing direction. The anisotropy of microstructure and mechanical properties of composites can be explained by the intrinsic anisotropy of graphene as well as the crack deflection energy release rate and the weak boundary bonding between graphene and Si3N4 caused by the thermal expansion mismatch. |
| first_indexed | 2024-12-13T22:39:05Z |
| format | Article |
| id | doaj.art-cd3b6480bcf2492ca9672d4d0fa4824c |
| institution | Directory Open Access Journal |
| issn | 1820-6131 2406-1034 |
| language | English |
| last_indexed | 2024-12-13T22:39:05Z |
| publishDate | 2018-03-01 |
| publisher | University of Novi Sad |
| record_format | Article |
| series | Processing and Application of Ceramics |
| spelling | doaj.art-cd3b6480bcf2492ca9672d4d0fa4824c2022-12-21T23:28:54ZengUniversity of Novi SadProcessing and Application of Ceramics1820-61312406-10342018-03-01121273510.2298/PAC1801027ZEffect of graphene orientation on microstructure and mechanical properties of silicon nitride ceramicsYubing Zhang0Guangchun Xiao1Mingdong Yi2Chonghai Xu3School of Mechanical and Automotive Engineering, Qilu University of Technology, Jinan, China; Key Laboratory of Advanced Manufacturing and Measurement and Control Technology for Light Industry in Universities of Shandong, Qilu University of Technology, Jinan, ChinaSchool of Mechanical and Automotive Engineering, Qilu University of Technology, Jinan, China; Key Laboratory of Advanced Manufacturing and Measurement and Control Technology for Light Industry in Universities of Shandong, Qilu University of Technology, Jinan, ChinaSchool of Mechanical and Automotive Engineering, Qilu University of Technology, Jinan, China; Key Laboratory of Advanced Manufacturing and Measurement and Control Technology for Light Industry in Universities of Shandong, Qilu University of Technology, Jinan, ChinaSchool of Mechanical and Automotive Engineering, Qilu University of Technology, Jinan, China; Key Laboratory of Advanced Manufacturing and Measurement and Control Technology for Light Industry in Universities of Shandong, Qilu University of Technology, Jinan, China; School of Mechanical Engineering, Shandong University, Jinan, ChinaMechanical properties and microstructure of graphene platelets reinforced Si3N4 composites have been investigated and compared to monolithic Si3N4. The microstructure shows that graphene platelets are parallel to each other and perpendicular to the hot pressing direction. Fracture toughness and flexural strength of composite with 1 wt.% graphene measured on polished surface perpendicular to hot pressing direction are 8.7 MPa·m1/2 and 892 MPa, respectively, which are increased about 14.5% and 20.2% compared with that parallel to hot pressing direction. The anisotropy of microstructure and mechanical properties of composites can be explained by the intrinsic anisotropy of graphene as well as the crack deflection energy release rate and the weak boundary bonding between graphene and Si3N4 caused by the thermal expansion mismatch.http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2039%2005.pdfgrapheneanisotropysilicon nitride ceramicmechanical properties |
| spellingShingle | Yubing Zhang Guangchun Xiao Mingdong Yi Chonghai Xu Effect of graphene orientation on microstructure and mechanical properties of silicon nitride ceramics Processing and Application of Ceramics graphene anisotropy silicon nitride ceramic mechanical properties |
| title | Effect of graphene orientation on microstructure and mechanical properties of silicon nitride ceramics |
| title_full | Effect of graphene orientation on microstructure and mechanical properties of silicon nitride ceramics |
| title_fullStr | Effect of graphene orientation on microstructure and mechanical properties of silicon nitride ceramics |
| title_full_unstemmed | Effect of graphene orientation on microstructure and mechanical properties of silicon nitride ceramics |
| title_short | Effect of graphene orientation on microstructure and mechanical properties of silicon nitride ceramics |
| title_sort | effect of graphene orientation on microstructure and mechanical properties of silicon nitride ceramics |
| topic | graphene anisotropy silicon nitride ceramic mechanical properties |
| url | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2039%2005.pdf |
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