Investigations on Characterization and Properties of Al-MoO3 Composites Synthesized Using Powder Metallurgy Technique

• Published in: SILICON 2018-11, Vol.10 (6), p.2663-2670
• Main Authors: Stalin, B., Sudha, G. T., Ravichandran, M.
• Format: Article
• Language: English
• Subjects: Aluminum matrix composites; Aspect ratio; Chemistry; Chemistry and Materials Science; Coefficients; Cold upsetting; Compacts; Electron microscopes; Environmental Chemistry; Hardness; Heat conductivity; Heat transfer; Hydraulic presses; Inorganic Chemistry; Lasers; Materials Science; Molybdenum trioxide; Optical Devices; Optics; Original Paper; Photonics; Polymer Sciences; Powder metallurgy; Sintering (powder metallurgy); Strain hardening; Synthesis; Thermal conductivity
• ISSN: 1876-990X; 1876-9918
• DOI: 10.1007/s12633-018-9803-6

In this work, Powder Metallurgy (PM) technique was used to synthesize Aluminium based metal matrix composites with various weight percentages (0, 5, 10 & 15) of Molybdenum trioxide (MoO 3 ) as reinforcement. The green cylindrical compacts were produced using a hydraulic press, sintered at 600 ∘ C for a period of 3 hours, furnace cooled and machined to obtain samples with aspect ratio of 0.5. Scanning Electron Microscope (SEM) analysis was conducted to study the morphology of the sintered composites. X-Ray Diffraction (XRD) analysis was used to study the presence of MoO 3 in Aluminium matrix. The cold upset tests were carried out in steps of 10 KN to study the strain hardening index and strength coefficient of the composites. The effect of MoO 3 addition on the density, hardness, thermal conductivity and strength coefficient were analyzed and the results show that the increase in weight percentage of MoO 3 content in the Al matrix increases the strength coefficient and hardness of the composite and decreases the strain hardening index and thermal conductivity.