| Abstrakt: |
The significance of biosilica in the silver-grey magnesium (SG-Mg-10% Si) metal is to enhance its mechanical and tribological characteristics. The Bermuda grass was used to make the biosilica. This investigation employed SG-Mg-10%Si and biosilica reinforcement (0, 5, 10, 15, and 20 wt. %) as the composite matrix. Due to increased bonding between the components of the composite, the SG-Mg-10%Si/biosilica composite created by the stir casting process demonstrated remarkable mechanical and tribological qualities. Further testing was done to assess the mechanical and tribological characteristics of the composite specimens, including density, porosity, hardness, tensile strength, and wear rate. SG-Mg-10%Si was contrasted with all these outcomes. The density plummeted at a rate of 1.49 (g/cm3) when the weight percentage of biosilica particles was added. Minimum and maximum hardness values for the composite's 20% of reinforced biosilica particles are 93.4 VHN and 125 VHN, respectively, and the tensile strength is 633.18 MPa. In order to determine the wear rate of SG-Mg-10%Si/biosilica composites, a dry sliding pin-on-disc tribometer was employed. When biosilica particles were added, the rate of wear of the manufactured SG-Mg-10%Si/ biosilica composites gradually reduced. When subjected to loads of 40 N and sliding distances of 1500 m and 2500 m, respectively, the composite with 20wt.% of biosilica reinforcement had improved anti-wear properties of 10.257 mg/m × 10−3 and 13.334 mg/m × 10−3. Field emission scanning electron microscope (FESEM) was utilized to examine how reinforcement was distributed across the matrix and showed the uniform distribution and strong bonding in the composites, together with a visible biosilica reinforcing interface. The benefits of the SG-Mg-10%Si/biosilica composites are enhanced mechanical and tribological properties and utilized in several applications like automobile, aeronautical and space research, sports goods, and medical types of equipment, reduced expenditure, and saved manufacturing time and exertion. [ABSTRACT FROM AUTHOR] |
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