04282ntm a2200385 i 4500952013100000952011400131999001700245003000800262005001700270006001900287007000300306008004100309020003200350040002300382090002900405100003200434245012000466264003400586264001100620300007100631336002100702337002500723337002300748338002300771338003000794347002400824500006800848502007000916504004000986520271501026610008303741650004503824650001103869942001603880  00102lcc4070a20000b20000d2022-10-18l0oFTKPM .F38 2022 r ThesispT000002007r2022-10-18 00:00:00t1w2022-10-18yTHESIS  00102lcc4070a20000b20000d2022-10-18l0oCD13167pT000002008r2022-10-18 00:00:00t1w2022-10-18yTHESIS  c97939d97945MY-KuUP20251125110131.0t||||fr|||| 00| 0 ta221018s2022    my a|||frm||| 00| 0 eng d  aTHE0009377(Local)qhardback  aUMPbengcUMPerda  aFTKPM .F38 2022 r Thesis0 aNorfatihah Ismail,eauthor.10aStudy on the mechanical behavior of silica nanoparticle reinforced magnesium bio-nanocomposite /cNorfatihah Ismail 1aKuantan, Pahang :bUMP,c2022 4c©2022  axiii, 82 pages :billustrations (some color) ;c30 cm. +e1 CD-ROM  atext2rdacontent  aunmediated2rdamedia  acomputer2rdamedia  avolume2rdacarrier  acomputer disc2rdacarrier  atext filebPDF2rda  aFaculty of Manufacturing and Mechatronic Engineering Technology  aThesis (Master of Science) -- Universiti Malaysia Pahang – 2022  aIncludes bibliographical references3 aIn recent years, the need for advanced metallic biomaterials for artificial implants has gradually risen and the market for people with bone fractures and degeneration attributable to collisions, athletic injuries or normal ageing processes, often requiring biomaterial implants to regain function, is expected to continue. Magnesium (Mg) and its alloys have drawn tremendous interest in becoming possible alternatives to traditional orthopaedic implant materials due to their excellent biodegradable and mechanical properties. These Mg materials demonstrate low corrosion resistance in a physiological environment despite their great benefits. In order to improve corrosion behaviour and sustain degradation at a controlled rate, filler materials are applied to the Mg alloys to produce composites. Apart from other oxide materials, silica (SiO2) is another option of filler material that can be used to produce Mg-based bio-composite due to its high biocompatibility. Mechanical alloying (MA) technique has been widely used in the manufacturing of composite materials, requiring the transformation of materials due to various cold welding, fracturing and re-welding processes of milled powder particles in a highly energetic ball mill, making the powder more homogeneous due to its ability to integrate the reinforcing particle into the metal matrix at a close distance. Therefore, in this study, magnesium- nanosilica (Mg-SiO2) composite system has been fabricated by the mechanical alloying process with different weight percentages of nanosilica reinforcement in order to achieve an optimal reinforcement composition. In order to get the formulation, the raw powders with the desired percentage were blended, compacted and sintered. The fabricated samples were then prepared for microstructural characterization, mechanical and corrosion testing. Analysis of the microstructure revealed an almost flawless microstructure of nanocomposite samples with a new phase of magnesium silicide formation (Mg2Si). Mechanical properties of the composites, including hardness and tensile strength, have been examined. It is observed from the obtained mechanical properties that the hardness and tensile strength of the nanocomposites improve dramatically due to the production of the Mg2Si phase in the composite. In addition, the fabricated nanocomposite has stronger corrosion resistance properties than the pure Mg material. The addition of 5 wt. % nanosilica into the Mg matrix reveals superior mechanical and corrosion properties relative to the matrix material and other compositions of the Mg-SiO2 nanocomposites. This Mg-5%SiO2 nanocomposite demonstrated its potential to be an effective bio-implant material.20aFaculty of Manufacturing and Mechatronic Engineering TechnologyxDissertations 0aUniversities and collegesxDissertations 0aTheses  2lcccTHESIS