PHYSICAL CHARACTERISATION OF SILICA-MAGNESIA HYBRID-MATRIX COMPOSITE MATERIALS FOR FRICTION AND BRAKE APPLICATIONS

O. I. Sekunowo, S. I. Durowaye, G. I. Lawal

Abstract


The quest for quality brake pads employed both in civil and military aircrafts to ensure safety continues to attract attention.  Mill scale reinforced silica-magnesia hybrid composite represents a potential new generation of high performance material that exhibits numerous advantages over conventional friction/ceramic materials. In this study, physical characterization of selected friction materials using both X-ray fluorescence (XRF) and X-ray diffraction (XRD) techniques was carried out in order to identify relevant potent compounds in them.  Silica and magnesia were chosen as hybrid matrix reinforced by iron mill scale. It was found that the selected materials contain relevant potent friction/thermal compounds up to 68.8 % FeO, 98.9 % and 98.8 % for SiO2 and MgO respectively.  Thus, the synthesis of these materials through optimum formulations represents a boost to the production of high quality brake pads for aircrafts.

 

Keywords: Silica-Magnesia Hybrid, Composite, Friction Materials, aircraft brake pad


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