Microstructure and mechanical properties of h-BN/Yb4Si2O7N2 composites
Abstract A series of h-BN based composites with Yb4Si2O7N2 as a secondary phase were successfully synthesized by an in situ reaction hot pressing method. It was found that the relative density and room-temperature mechanical properties monotonically increased with increasing the content of Yb4Si2O7N...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2018-11-01
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| Series: | Journal of Advanced Ceramics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/s40145-018-0281-5 |
| _version_ | 1797707134574526464 |
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| author | Juanjuan Chen Jixin Chen Hao Zhang Minmin Hu Meishuan Li |
| author_facet | Juanjuan Chen Jixin Chen Hao Zhang Minmin Hu Meishuan Li |
| author_sort | Juanjuan Chen |
| collection | DOAJ |
| description | Abstract A series of h-BN based composites with Yb4Si2O7N2 as a secondary phase were successfully synthesized by an in situ reaction hot pressing method. It was found that the relative density and room-temperature mechanical properties monotonically increased with increasing the content of Yb4Si2O7N2 from 20 to 50 vol%. When 50 vol% Yb4Si2O7N2 was introduced, the relative density of the composite reached 98.75%, and its flexural strength, compressive strength, fracture toughness, and hardness reached 338±10 MPa, 803±49 MPa, 2.06±0.06 MPa·m1/2, and 2.69±0.10 GPa, respectively. The strengthening effect of Yb4Si2O7N2 was mainly attributed to its high modulus and high hardness. Fine microstructure was also advantageous to strength and could lead to more tortuous crack propagation paths and then improve the fracture toughness of the composites simultaneously. Meanwhile, the composites maintained good machinability. |
| first_indexed | 2024-03-12T06:02:52Z |
| format | Article |
| id | doaj.art-7ae8aee8c978418c93797ce865041741 |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-03-12T06:02:52Z |
| publishDate | 2018-11-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-7ae8aee8c978418c93797ce8650417412023-09-03T03:59:25ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082018-11-017431732410.1007/s40145-018-0281-5Microstructure and mechanical properties of h-BN/Yb4Si2O7N2 compositesJuanjuan Chen0Jixin Chen1Hao Zhang2Minmin Hu3Meishuan Li4Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesShenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of SciencesAbstract A series of h-BN based composites with Yb4Si2O7N2 as a secondary phase were successfully synthesized by an in situ reaction hot pressing method. It was found that the relative density and room-temperature mechanical properties monotonically increased with increasing the content of Yb4Si2O7N2 from 20 to 50 vol%. When 50 vol% Yb4Si2O7N2 was introduced, the relative density of the composite reached 98.75%, and its flexural strength, compressive strength, fracture toughness, and hardness reached 338±10 MPa, 803±49 MPa, 2.06±0.06 MPa·m1/2, and 2.69±0.10 GPa, respectively. The strengthening effect of Yb4Si2O7N2 was mainly attributed to its high modulus and high hardness. Fine microstructure was also advantageous to strength and could lead to more tortuous crack propagation paths and then improve the fracture toughness of the composites simultaneously. Meanwhile, the composites maintained good machinability.http://link.springer.com/article/10.1007/s40145-018-0281-5h-BN/Yb4Si2O7N2 compositesmicrostructuremechanical propertiesmachinability |
| spellingShingle | Juanjuan Chen Jixin Chen Hao Zhang Minmin Hu Meishuan Li Microstructure and mechanical properties of h-BN/Yb4Si2O7N2 composites Journal of Advanced Ceramics h-BN/Yb4Si2O7N2 composites microstructure mechanical properties machinability |
| title | Microstructure and mechanical properties of h-BN/Yb4Si2O7N2 composites |
| title_full | Microstructure and mechanical properties of h-BN/Yb4Si2O7N2 composites |
| title_fullStr | Microstructure and mechanical properties of h-BN/Yb4Si2O7N2 composites |
| title_full_unstemmed | Microstructure and mechanical properties of h-BN/Yb4Si2O7N2 composites |
| title_short | Microstructure and mechanical properties of h-BN/Yb4Si2O7N2 composites |
| title_sort | microstructure and mechanical properties of h bn yb4si2o7n2 composites |
| topic | h-BN/Yb4Si2O7N2 composites microstructure mechanical properties machinability |
| url | http://link.springer.com/article/10.1007/s40145-018-0281-5 |
| work_keys_str_mv | AT juanjuanchen microstructureandmechanicalpropertiesofhbnyb4si2o7n2composites AT jixinchen microstructureandmechanicalpropertiesofhbnyb4si2o7n2composites AT haozhang microstructureandmechanicalpropertiesofhbnyb4si2o7n2composites AT minminhu microstructureandmechanicalpropertiesofhbnyb4si2o7n2composites AT meishuanli microstructureandmechanicalpropertiesofhbnyb4si2o7n2composites |