ZrB2-CNTs Nanocomposites Fabricated by Spark Plasma Sintering
ZrB2-based nanocomposites with and without carbon nanotubes (CNTs) as reinforcement were prepared at 1600 °C by spark plasma sintering. The effects of CNTs on the microstructure and mechanical properties of nano-ZrB2 matrix composites were studied. The results indicated that adding CNTs can inhibit...
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| Format: | Article |
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MDPI AG
2016-11-01
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| Series: | Materials |
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| Online Access: | http://www.mdpi.com/1996-1944/9/12/967 |
| _version_ | 1811283630996062208 |
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| author | Hua Jin Songhe Meng Weihua Xie Chenghai Xu Jiahong Niu |
| author_facet | Hua Jin Songhe Meng Weihua Xie Chenghai Xu Jiahong Niu |
| author_sort | Hua Jin |
| collection | DOAJ |
| description | ZrB2-based nanocomposites with and without carbon nanotubes (CNTs) as reinforcement were prepared at 1600 °C by spark plasma sintering. The effects of CNTs on the microstructure and mechanical properties of nano-ZrB2 matrix composites were studied. The results indicated that adding CNTs can inhibit the abnormal grain growth of ZrB2 grains and improve the fracture toughness of the composites. The toughness mechanisms were crack deflection, crack bridging, debonding, and pull-out of CNTs. The experimental results of the nanograined ZrB2-CNTs composites were compared with those of the micro-grained ZrB2-CNTs composites. Due to the small size and surface effects, the nanograined ZrB2-CNTs composites exhibited stronger mechanical properties: the hardness, flexural strength and fracture toughness were 18.7 ± 0.2 GPa, 1016 ± 75 MPa, and 8.5 ± 0.4 MPa·m1/2, respectively. |
| first_indexed | 2024-04-13T02:16:07Z |
| format | Article |
| id | doaj.art-8f746e25840e42a7b069388aed30d817 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-13T02:16:07Z |
| publishDate | 2016-11-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-8f746e25840e42a7b069388aed30d8172022-12-22T03:07:09ZengMDPI AGMaterials1996-19442016-11-0191296710.3390/ma9120967ma9120967ZrB2-CNTs Nanocomposites Fabricated by Spark Plasma SinteringHua Jin0Songhe Meng1Weihua Xie2Chenghai Xu3Jiahong Niu4National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, ChinaZrB2-based nanocomposites with and without carbon nanotubes (CNTs) as reinforcement were prepared at 1600 °C by spark plasma sintering. The effects of CNTs on the microstructure and mechanical properties of nano-ZrB2 matrix composites were studied. The results indicated that adding CNTs can inhibit the abnormal grain growth of ZrB2 grains and improve the fracture toughness of the composites. The toughness mechanisms were crack deflection, crack bridging, debonding, and pull-out of CNTs. The experimental results of the nanograined ZrB2-CNTs composites were compared with those of the micro-grained ZrB2-CNTs composites. Due to the small size and surface effects, the nanograined ZrB2-CNTs composites exhibited stronger mechanical properties: the hardness, flexural strength and fracture toughness were 18.7 ± 0.2 GPa, 1016 ± 75 MPa, and 8.5 ± 0.4 MPa·m1/2, respectively.http://www.mdpi.com/1996-1944/9/12/967nanocompositescarbon nanotubes (CNTs)ZrB2fracture toughnessstrength |
| spellingShingle | Hua Jin Songhe Meng Weihua Xie Chenghai Xu Jiahong Niu ZrB2-CNTs Nanocomposites Fabricated by Spark Plasma Sintering Materials nanocomposites carbon nanotubes (CNTs) ZrB2 fracture toughness strength |
| title | ZrB2-CNTs Nanocomposites Fabricated by Spark Plasma Sintering |
| title_full | ZrB2-CNTs Nanocomposites Fabricated by Spark Plasma Sintering |
| title_fullStr | ZrB2-CNTs Nanocomposites Fabricated by Spark Plasma Sintering |
| title_full_unstemmed | ZrB2-CNTs Nanocomposites Fabricated by Spark Plasma Sintering |
| title_short | ZrB2-CNTs Nanocomposites Fabricated by Spark Plasma Sintering |
| title_sort | zrb2 cnts nanocomposites fabricated by spark plasma sintering |
| topic | nanocomposites carbon nanotubes (CNTs) ZrB2 fracture toughness strength |
| url | http://www.mdpi.com/1996-1944/9/12/967 |
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