Effect of Nano-Sized SiO2 Particles Addition on The Surface Roughness and Micro Hardness of Copper-Based Friction Materials


Muslim Ali†, Iqbal Alshalal‡, Auday Awad Abtan‡, Ali Raheem Yousif‡†, J. H. Mohmmed‡†


† Power Mechanics, Al-Furat Al-Awsat Technical University, Babylon Technical Institute, Iraq

‡ Training and Workshops Center, University of Technology, Baghdad, Iraq

‡† Materials Engineering Department, University of Technology, Baghdad-Iraq

Corresponding Author Email: [email protected]; [email protected]

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

An automotive brake disk pad is a tool for slowing or stopping the motion of a wheel safely while it runs at a certain speed. For the assurance of a brake to do its function in highly performance, we developed and prepared a copper-based friction material with SiO2 nanoparticles that can be used for manufacturing a brake pad. The effect of the addition of SiO2 nanoparticles with different concentrations (0, 3, 6, and 9) % wt. to the prepared friction material was investigated. Four cylindrical samples of friction material were prepared using the powder metallurgy method to examine the roughness and hardness of the produced pad materials. The results demonstrated the nano oxide silicon with 9% SiO2 was more effective in increasing hardness by 18.11% and roughness values by 5.4%. The experimental results confirm the success of the manufacturing process of the friction material with the powder metallurgy method, and the possibility to enhance the friction coefficient of the brake pad. The prepared composition materials for brake pads has beneficial effects since the values of roughness increased and hardness were enhanced with the addition of nano particles.