TY - JOUR VL - 316-31 A1 - Ahmeda, T. A1 - Mamat, O. JF - Defect and Diffusion Forum UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-79959408694&doi=10.4028%2fwww.scientific.net%2fDDF.316-317.97&partnerID=40&md5=659e94a9e9fd212f9dc911ed147d16c1 Y1 - 2011/// ID - scholars2088 KW - Density (specific gravity); Iron; Mechanical properties; Metallic matrix composites; Microstructure; Powder metallurgy; Powder metals; Silica nanoparticles; Tensile strength KW - Dislocation densities; Electrical conductivity; Metal matrices; Optimum value; Particulate composites; Powder metallurgy techniques; Properties; Sintered density KW - Silica sand N2 - Metal matrix-particulate composites fabricated by using powder metallurgy possess a higher dislocation density, a small sub-grain size and limited segregation of particles, which, when combined, result in superior mechanical properties. The present study aims to develop iron based silica sand nanoparticles composites with improved mechanical properties. An iron based silica sand nanoparticles composite with 5, 10, 15 and 20 wt. of nanoparticles silica sand were developed through powder metallurgy technique. It was observed that by addition of silica sand nanoparticles with 20 wt. increased the hardness up to 95HRB and tensile strength up to 690MPa. Sintered densities and electrical conductivity of the composites were improved with an optimum value of 15 wt. silica sand nanoparticles. Proposed mechanism is due to diffusion of silica sand nanoparticles into porous sites of the composites. © (2011) Trans Tech Publications, Switzerland. EP - 106 PB - Trans Tech Publications Ltd SN - 10120386 SP - 97 TI - Characterization and properties of iron/silica-sand-nanoparticle composites N1 - cited By 8 AV - none ER -