Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/208988
Title: THREE-DIMENSIONAL PRINTING OF MAGNESIUM ALLOYS FOR BIOMEDICAL APPLICATIONS
Authors: MOJTABA SALEHI
Keywords: Additive manufacturing; Capillary-mediated binderless 3D printing; Magnesium alloys; Liquid phase sintering; Microwave heating; Binder jetting.
Issue Date: 1-Aug-2019
Citation: MOJTABA SALEHI (2019-08-01). THREE-DIMENSIONAL PRINTING OF MAGNESIUM ALLOYS FOR BIOMEDICAL APPLICATIONS. ScholarBank@NUS Repository.
Abstract: Employing fusion-based Additive Manufacturing (AM) techniques for Magnesium (Mg) is extremely challenging due to intrinsic properties of Mg. This study demonstrates how capillarity-driven bridging can serve as a new and rapid tool of assembling Mg powder particles into 3D structures under ambient conditions. Characterized by a variety of methods, an in-situ binding agent was derived autogenously from the interactions between deposited ink and superficial MgO film, inevitably present on the surface of powder, to form in-situ solid interparticle bridges between Mg particles enabling capillary-mediated binderless 3D printing of parts. In the absence of a pyrolysis-adapted sintering profile, these bridges fully decomposed during sintering processes in both conventional and microwave furnaces, resulting in functional Mg parts with a chemical composition identical to the raw powder. After optimization of sintering processes, comparable compressive properties, elastic modulus, and pores characteristics to those of human cortical bone were obtained from additively manufactured Mg parts.
URI: https://scholarbank.nus.edu.sg/handle/10635/208988
Appears in Collections:Ph.D Theses (Open)

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