Tribological, Thermal and Corrosive Behaviour of Aluminium Alloy 2219 Reinforced by Si3N4 Nanosized Powder

• Published in: SILICON 2022-06, Vol.14 (8), p.4325-4336
• Main Authors: Manjunatha, C. J., Venkata Narayana, B., Bino Prince Raja, D., Rimal Isaac, R. S.
• Format: Article
• Language: English
• Subjects: Aluminum base alloys; Behavior; Chemistry; Chemistry and Materials Science; Differential thermal analysis; Electron microscopes; Environmental Chemistry; Hardness; Heat treatment; Inorganic Chemistry; Lasers; Materials Science; Mechanical properties; Metal matrix composites; Optical Devices; Optics; Original Paper; Photonics; Polymer Sciences; Scanning electron microscopy; Silicon nitride; Tensile strength; Thermogravimetric analysis; Tribology; Wear rate; Wear resistance
• ISSN: 1876-990X; 1876-9918
• DOI: 10.1007/s12633-021-01214-0

The Metal Matrix Composite (MMC) technique is the most effective contrast method when compared with other techniques. By using the method of high energy stir casting, Aluminium alloy Al2219 is reinforced with various percentages of Si 3 N 4 (0, 3, 6, and 9 %) particles. X-ray diffraction along with Scanning electron microscope was performed to characterize the composite. The mechanical and thermal behaviours such as differential thermal analysis thermo gravimetric analysis/, tensile, wear and hardness behaviours were investigated. By using electro chemical potentiodynamic polarization test, the consequence of heat treatment on the corrosion behaviour of the composites when compared to its matrix in 3.5 % NaCl when at 600 rpm was also investigated. In this experimental study, the wear of the aluminium composites was significantly decreased on addition of Si 3 N 4 particles. The study also revealed that, since the inclusion of Si 3 N 4 in the samples and compared to the base aluminium alloy, the mechanical properties of the composites, such as wear resistance, hardness and tensile strength increased by percentage. The surface morphology and Scanning electron microscope analysis of worn surfaces in the test pieces unfold that with the increase in reinforcement content, wear rate decreases.