A Tribological Study on the Effect of Reinforcing SiC and Al2O3 in Al7075: Applications for Spur Gears

Metals

Mahmoud Ali Hussein¹  Abdullah M. Asiri¹  Anish Khan¹  Abeer Mohamed Alosaimi²  Shridhar H. Budapanahalli³  Arun Y. Patil⁴  Shekhar B. Mallur⁵ 

[1] Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;Department of Chemistry, Faculty of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;Department of Mechanical Engineering, KLE Institute of Technology, Hubballi 580027, India;Department of Mechanical Engineering, KLE Technological University, Vidya Nagar, Hubballi 580031, India;Department of Mechanical Engineering, UBDT College of Engineering, Davanagere 577004, India;

关键词: tribology;    Al 7075;    SiC;    Al₂O₃;    spur gear;   

DOI  :  10.3390/met12061028

来源: DOAJ

【 摘 要 】

In today’s world, efficiency and margin of safety are prime considerations for any applications. To address such parameters in aerospace or high-tech consumer products, there are still limitations in terms of capabilities from a material perspective. Aluminium 7075 is predominantly used as a combination material in these applications, but it has many drawbacks such as early wear/friction, low fatigue life cycle, high weight ratios, high deformation and stresses. To overcome these key issues, many reinforcements have been used to date. However, the results are not so convincing with respect to tribological applications, and the aforementioned issues still persist. In the current work, a novel hybrid composite comprising Aluminium 7075 as substrate and the reinforcement of silicon carbide and aluminium oxide at varying combinations of 3 to 9% in steps of 3% and a constant percentage of 5% were added, respectively. The exhaustive work focuses on extracting the mechanical, tribological and physical properties of a hybrid composite. Furthermore, a microcharacterisation study of these combinations was carried out using FE-SEM and EDX. In a continuation to this simulation, a study was performed using ANSYS Workbench to identify a suitable gear application with real-time loading conditions. The observed results show a tensile strength of 366 MPa for 6%SiC, hardness of 93 VHN and wear rate of 0.00025 mm³/Nm for the 9%SiC combination.

【 授权许可】

Unknown