Effects of Intermetallic NiAl Particle Content on Friction and Wear of Spark Plasma-Sintered Alumina Matrix Composites
The spark plasma sintering (SPS) technology was applied to develop alumina matrix composites (Al<sub>2</sub>O<sub>3</sub>MCs) with different nickel-aluminium (NiAl) particle contents of 5–20 wt.% to understand a correlation between their NiAl particle contents and their micro...
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MDPI AG
2025-02-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/13/3/101 |
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| author | Nay Win Khun Mingyue Huang Zhong Alan Li He Zhang Khiam Aik Khor Jinglei Yang Fei Duan |
| author_facet | Nay Win Khun Mingyue Huang Zhong Alan Li He Zhang Khiam Aik Khor Jinglei Yang Fei Duan |
| author_sort | Nay Win Khun |
| collection | DOAJ |
| description | The spark plasma sintering (SPS) technology was applied to develop alumina matrix composites (Al<sub>2</sub>O<sub>3</sub>MCs) with different nickel-aluminium (NiAl) particle contents of 5–20 wt.% to understand a correlation between their NiAl particle contents and their microstructures, fracture, hardness, friction, and wear. The incorporation of NiAl particles suppressed micrograins and micropores in the microstructures of the Al<sub>2</sub>O<sub>3</sub>MCs, which resulted in their improved fracture resistance. Increasing the NiAl particle content from 0 to 20 wt.% gave rise to a 23.9% decrease in the hardness of the Al<sub>2</sub>O<sub>3</sub>MCs. The Al<sub>2</sub>O<sub>3</sub>MCs had 18.2% and 13.3% decreases in their friction coefficients and 68.3% and 81.3% decreases in their specific wear rates under the normal loads of 2 and 6 N, respectively, with an increased NiAl particle content from 0 to 20 wt.% thanks to their decreased fatigue wear. The SPS Al<sub>2</sub>O<sub>3</sub>MCs with NiAl particles had promising tribological performance for rotating gas turbine components. |
| format | Article |
| id | doaj-art-b2b7aafce3c34b61becc600048de86b0 |
| institution | Kabale University |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
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| series | Lubricants |
| spelling | doaj-art-b2b7aafce3c34b61becc600048de86b02025-08-20T03:43:31ZengMDPI AGLubricants2075-44422025-02-0113310110.3390/lubricants13030101Effects of Intermetallic NiAl Particle Content on Friction and Wear of Spark Plasma-Sintered Alumina Matrix CompositesNay Win Khun0Mingyue Huang1Zhong Alan Li2He Zhang3Khiam Aik Khor4Jinglei Yang5Fei Duan6School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeSchool of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeThe spark plasma sintering (SPS) technology was applied to develop alumina matrix composites (Al<sub>2</sub>O<sub>3</sub>MCs) with different nickel-aluminium (NiAl) particle contents of 5–20 wt.% to understand a correlation between their NiAl particle contents and their microstructures, fracture, hardness, friction, and wear. The incorporation of NiAl particles suppressed micrograins and micropores in the microstructures of the Al<sub>2</sub>O<sub>3</sub>MCs, which resulted in their improved fracture resistance. Increasing the NiAl particle content from 0 to 20 wt.% gave rise to a 23.9% decrease in the hardness of the Al<sub>2</sub>O<sub>3</sub>MCs. The Al<sub>2</sub>O<sub>3</sub>MCs had 18.2% and 13.3% decreases in their friction coefficients and 68.3% and 81.3% decreases in their specific wear rates under the normal loads of 2 and 6 N, respectively, with an increased NiAl particle content from 0 to 20 wt.% thanks to their decreased fatigue wear. The SPS Al<sub>2</sub>O<sub>3</sub>MCs with NiAl particles had promising tribological performance for rotating gas turbine components.https://www.mdpi.com/2075-4442/13/3/101spark plasma sinteringAl<sub>2</sub>O<sub>3</sub> matrix compositesNiAl particleshardnessfrictionwear |
| spellingShingle | Nay Win Khun Mingyue Huang Zhong Alan Li He Zhang Khiam Aik Khor Jinglei Yang Fei Duan Effects of Intermetallic NiAl Particle Content on Friction and Wear of Spark Plasma-Sintered Alumina Matrix Composites Lubricants spark plasma sintering Al<sub>2</sub>O<sub>3</sub> matrix composites NiAl particles hardness friction wear |
| title | Effects of Intermetallic NiAl Particle Content on Friction and Wear of Spark Plasma-Sintered Alumina Matrix Composites |
| title_full | Effects of Intermetallic NiAl Particle Content on Friction and Wear of Spark Plasma-Sintered Alumina Matrix Composites |
| title_fullStr | Effects of Intermetallic NiAl Particle Content on Friction and Wear of Spark Plasma-Sintered Alumina Matrix Composites |
| title_full_unstemmed | Effects of Intermetallic NiAl Particle Content on Friction and Wear of Spark Plasma-Sintered Alumina Matrix Composites |
| title_short | Effects of Intermetallic NiAl Particle Content on Friction and Wear of Spark Plasma-Sintered Alumina Matrix Composites |
| title_sort | effects of intermetallic nial particle content on friction and wear of spark plasma sintered alumina matrix composites |
| topic | spark plasma sintering Al<sub>2</sub>O<sub>3</sub> matrix composites NiAl particles hardness friction wear |
| url | https://www.mdpi.com/2075-4442/13/3/101 |
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