Fabrication of Carbon Nanotubes and Rare Earth Pr Reinforced AZ91 Composites by Powder Metallurgy
Abstract It can be known from a large number of research results that improving the dispersibility of CNTs can effectively optimize the mechanical properties of the corresponding metal matrix composites. However, the crucial issue of increasing the bonding of CNTs and the matrix is still unsolved. I...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2021-02-01
|
| Series: | Chinese Journal of Mechanical Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s10033-021-00545-8 |
| _version_ | 1818615440387080192 |
|---|---|
| author | Ning Li Hong Yan Qingjie Wu Zeyu Cao |
| author_facet | Ning Li Hong Yan Qingjie Wu Zeyu Cao |
| author_sort | Ning Li |
| collection | DOAJ |
| description | Abstract It can be known from a large number of research results that improving the dispersibility of CNTs can effectively optimize the mechanical properties of the corresponding metal matrix composites. However, the crucial issue of increasing the bonding of CNTs and the matrix is still unsolved. In this paper, a novel method was developed to increase interfacial bonding strength by coating titanium oxide (TiO2) on the surface of CNTs. The rare earth Pr and TiO2@CNTs-reinforced AZ91matrix composites were successfully fabricated by powder metallurgy. Hot press sintering and hot extrusion of the milled powder was performed. After hot extrusion, the influence of TiO2@CNTs on the microstructure and mechanical properties of the composites were investigated. The results showed that the coating process can improve the distribution of CNTs in Mg alloy. The CNTs refined the grains of the matrix, and the CNTs were presented throughout the extrusion direction. When the TiO2@CNTs content was 1.0 wt.%, the yield strength (YS), ultimate tensile strength (UTS), and elongation of the alloy attained maximum values. The values were improved by 23.5%, 82.1%, and 40.0%, respectively, when compared with the AZ91 alloy. Good interfacial bonding was achieved, which resulted in an effective tensile loading transfer at the interface. CNTs carried the tensile stress and were observed on the tensile fracture. |
| first_indexed | 2024-12-16T16:33:56Z |
| format | Article |
| id | doaj.art-f640a2d34e6240768588d5255b23c4c7 |
| institution | Directory Open Access Journal |
| issn | 1000-9345 2192-8258 |
| language | English |
| last_indexed | 2024-12-16T16:33:56Z |
| publishDate | 2021-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Chinese Journal of Mechanical Engineering |
| spelling | doaj.art-f640a2d34e6240768588d5255b23c4c72022-12-21T22:24:31ZengSpringerOpenChinese Journal of Mechanical Engineering1000-93452192-82582021-02-0134111010.1186/s10033-021-00545-8Fabrication of Carbon Nanotubes and Rare Earth Pr Reinforced AZ91 Composites by Powder MetallurgyNing Li0Hong Yan1Qingjie Wu2Zeyu Cao3School of Mechanical Electrical Engineering, Nanchang UniversitySchool of Mechanical Electrical Engineering, Nanchang UniversitySchool of Aviation Manufacturing Engineering, Nanchang Hangkong UniversitySchool of Mechanical Electrical Engineering, Nanchang UniversityAbstract It can be known from a large number of research results that improving the dispersibility of CNTs can effectively optimize the mechanical properties of the corresponding metal matrix composites. However, the crucial issue of increasing the bonding of CNTs and the matrix is still unsolved. In this paper, a novel method was developed to increase interfacial bonding strength by coating titanium oxide (TiO2) on the surface of CNTs. The rare earth Pr and TiO2@CNTs-reinforced AZ91matrix composites were successfully fabricated by powder metallurgy. Hot press sintering and hot extrusion of the milled powder was performed. After hot extrusion, the influence of TiO2@CNTs on the microstructure and mechanical properties of the composites were investigated. The results showed that the coating process can improve the distribution of CNTs in Mg alloy. The CNTs refined the grains of the matrix, and the CNTs were presented throughout the extrusion direction. When the TiO2@CNTs content was 1.0 wt.%, the yield strength (YS), ultimate tensile strength (UTS), and elongation of the alloy attained maximum values. The values were improved by 23.5%, 82.1%, and 40.0%, respectively, when compared with the AZ91 alloy. Good interfacial bonding was achieved, which resulted in an effective tensile loading transfer at the interface. CNTs carried the tensile stress and were observed on the tensile fracture.https://doi.org/10.1186/s10033-021-00545-8Carbon nanotubesTitanium oxideAZ91CoatingRare earth |
| spellingShingle | Ning Li Hong Yan Qingjie Wu Zeyu Cao Fabrication of Carbon Nanotubes and Rare Earth Pr Reinforced AZ91 Composites by Powder Metallurgy Chinese Journal of Mechanical Engineering Carbon nanotubes Titanium oxide AZ91 Coating Rare earth |
| title | Fabrication of Carbon Nanotubes and Rare Earth Pr Reinforced AZ91 Composites by Powder Metallurgy |
| title_full | Fabrication of Carbon Nanotubes and Rare Earth Pr Reinforced AZ91 Composites by Powder Metallurgy |
| title_fullStr | Fabrication of Carbon Nanotubes and Rare Earth Pr Reinforced AZ91 Composites by Powder Metallurgy |
| title_full_unstemmed | Fabrication of Carbon Nanotubes and Rare Earth Pr Reinforced AZ91 Composites by Powder Metallurgy |
| title_short | Fabrication of Carbon Nanotubes and Rare Earth Pr Reinforced AZ91 Composites by Powder Metallurgy |
| title_sort | fabrication of carbon nanotubes and rare earth pr reinforced az91 composites by powder metallurgy |
| topic | Carbon nanotubes Titanium oxide AZ91 Coating Rare earth |
| url | https://doi.org/10.1186/s10033-021-00545-8 |
| work_keys_str_mv | AT ningli fabricationofcarbonnanotubesandrareearthprreinforcedaz91compositesbypowdermetallurgy AT hongyan fabricationofcarbonnanotubesandrareearthprreinforcedaz91compositesbypowdermetallurgy AT qingjiewu fabricationofcarbonnanotubesandrareearthprreinforcedaz91compositesbypowdermetallurgy AT zeyucao fabricationofcarbonnanotubesandrareearthprreinforcedaz91compositesbypowdermetallurgy |