Wire Electrical Discharge Machining, Mechanical and Tribological Performance of TiN Reinforced Multiscale SiAlON Ceramic Composites Fabricated by Spark Plasma Sintering
An effective approach for preparing electrically conductive multiscale SiAlON-based nanocomposites with 10 wt.% and 20 wt.% of titanium nitride was developed. Fully dense samples were obtained by spark plasma sintering (SPS) at 1700 °C and 80 MPa for 30 min. The morphology of nanocomposites was obse...
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MDPI AG
2021-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/2/657 |
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| author | Sergey Grigoriev Yuri Pristinskiy Marina Volosova Sergey Fedorov Anna Okunkova Pavel Peretyagin Anton Smirnov |
| author_facet | Sergey Grigoriev Yuri Pristinskiy Marina Volosova Sergey Fedorov Anna Okunkova Pavel Peretyagin Anton Smirnov |
| author_sort | Sergey Grigoriev |
| collection | DOAJ |
| description | An effective approach for preparing electrically conductive multiscale SiAlON-based nanocomposites with 10 wt.% and 20 wt.% of titanium nitride was developed. Fully dense samples were obtained by spark plasma sintering (SPS) at 1700 °C and 80 MPa for 30 min. The morphology of nanocomposites was observed using scanning electron microscopy and the effects of TiN particles on the mechanical properties and electrical resistivity were studied. It was found that the addition of 20 wt.% TiN increased the hardness and fracture toughness compared to the commercial ceramic analogue TC3030. Meanwhile, the presence of TiN particles reduced the flexural strength of the nanocomposites due to the shrinkage difference between TiN particles and ceramic matrix during cooling, which led to tensile residual stresses and, consequently, to changes in strength values. In addition, the electrical resistivity of nanocomposites decreased with the increase of TiN content and reached 1.6 × 10<sup>−4</sup> Ω∙m for 20 wt.% amount of second phase, which consequently made them suitable for electrical discharge machining. In addition to enhanced mechanical and electrical properties, under identical conditions, SPS-sintered multiscale nanocomposites exhibited a higher wear resistance (more than about 1.5-times) compared to the commercial sample due to their higher toughness and hardness. |
| first_indexed | 2024-03-09T05:10:42Z |
| format | Article |
| id | doaj.art-118e96211e074230a55adebdd05cd1be |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T05:10:42Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-118e96211e074230a55adebdd05cd1be2023-12-03T12:49:25ZengMDPI AGApplied Sciences2076-34172021-01-0111265710.3390/app11020657Wire Electrical Discharge Machining, Mechanical and Tribological Performance of TiN Reinforced Multiscale SiAlON Ceramic Composites Fabricated by Spark Plasma SinteringSergey Grigoriev0Yuri Pristinskiy1Marina Volosova2Sergey Fedorov3Anna Okunkova4Pavel Peretyagin5Anton Smirnov6Department of High-Efficiency Processing Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, RussiaLaboratory of 3D Structural and Functional Engineering, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, RussiaDepartment of High-Efficiency Processing Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, RussiaDepartment of High-Efficiency Processing Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, RussiaDepartment of High-Efficiency Processing Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, RussiaSpark Plasma Sintering Research Laboratory, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, RussiaLaboratory of 3D Structural and Functional Engineering, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, 127055 Moscow, RussiaAn effective approach for preparing electrically conductive multiscale SiAlON-based nanocomposites with 10 wt.% and 20 wt.% of titanium nitride was developed. Fully dense samples were obtained by spark plasma sintering (SPS) at 1700 °C and 80 MPa for 30 min. The morphology of nanocomposites was observed using scanning electron microscopy and the effects of TiN particles on the mechanical properties and electrical resistivity were studied. It was found that the addition of 20 wt.% TiN increased the hardness and fracture toughness compared to the commercial ceramic analogue TC3030. Meanwhile, the presence of TiN particles reduced the flexural strength of the nanocomposites due to the shrinkage difference between TiN particles and ceramic matrix during cooling, which led to tensile residual stresses and, consequently, to changes in strength values. In addition, the electrical resistivity of nanocomposites decreased with the increase of TiN content and reached 1.6 × 10<sup>−4</sup> Ω∙m for 20 wt.% amount of second phase, which consequently made them suitable for electrical discharge machining. In addition to enhanced mechanical and electrical properties, under identical conditions, SPS-sintered multiscale nanocomposites exhibited a higher wear resistance (more than about 1.5-times) compared to the commercial sample due to their higher toughness and hardness.https://www.mdpi.com/2076-3417/11/2/657ceramic nanocompositesspark plasma sintering (SPS)mechanical propertieselectrical conductivitywire electrical discharge machining (WEDM)wear resistance |
| spellingShingle | Sergey Grigoriev Yuri Pristinskiy Marina Volosova Sergey Fedorov Anna Okunkova Pavel Peretyagin Anton Smirnov Wire Electrical Discharge Machining, Mechanical and Tribological Performance of TiN Reinforced Multiscale SiAlON Ceramic Composites Fabricated by Spark Plasma Sintering Applied Sciences ceramic nanocomposites spark plasma sintering (SPS) mechanical properties electrical conductivity wire electrical discharge machining (WEDM) wear resistance |
| title | Wire Electrical Discharge Machining, Mechanical and Tribological Performance of TiN Reinforced Multiscale SiAlON Ceramic Composites Fabricated by Spark Plasma Sintering |
| title_full | Wire Electrical Discharge Machining, Mechanical and Tribological Performance of TiN Reinforced Multiscale SiAlON Ceramic Composites Fabricated by Spark Plasma Sintering |
| title_fullStr | Wire Electrical Discharge Machining, Mechanical and Tribological Performance of TiN Reinforced Multiscale SiAlON Ceramic Composites Fabricated by Spark Plasma Sintering |
| title_full_unstemmed | Wire Electrical Discharge Machining, Mechanical and Tribological Performance of TiN Reinforced Multiscale SiAlON Ceramic Composites Fabricated by Spark Plasma Sintering |
| title_short | Wire Electrical Discharge Machining, Mechanical and Tribological Performance of TiN Reinforced Multiscale SiAlON Ceramic Composites Fabricated by Spark Plasma Sintering |
| title_sort | wire electrical discharge machining mechanical and tribological performance of tin reinforced multiscale sialon ceramic composites fabricated by spark plasma sintering |
| topic | ceramic nanocomposites spark plasma sintering (SPS) mechanical properties electrical conductivity wire electrical discharge machining (WEDM) wear resistance |
| url | https://www.mdpi.com/2076-3417/11/2/657 |
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