Synthesis and Properties of Mg-Based Foams by Infiltration Casting Without Protective Cover Gas

Viviana M. Posada, Juan Ramírez, Jean Paul Allain, Akshath R. Shetty, Patricia Fernández-Morales

    Research output: Contribution to journalArticlepeer-review

    4 Scopus citations

    Abstract

    Fabrication and characterization of Mg-based scaffolds by infiltration casting, without protective cover gas, are presented. Distinctive results were observed among the foams depending on the precise selection of casting variables. Foams with pore sizes ranging from 590 to 1040 µm, porosities ranging from 60.01 to 79.35%, and measured Young’s moduli ranging from 0.8 to 1.9 GPa, were obtained. These architected parameters for this cellular material were found to match the structural properties of cancellous bone while satisfying the mechanical requirements to support the bone healing process (0.3-3 GPa). Casting temperature and melting time were set at 680 °C and 10 min for infiltrating 590 µm salt particles. A salt flux combination containing MgCl2, MgO, CaF2, and KCl, is used to protect the molten metal, and its effect on ignition and oxidation of the Mg alloy is evaluated. The results of the crystalline phase and chemical analysis indicate a safe production process since there is no evidence of high contamination or new-formed phases.

    Original languageEnglish
    Pages (from-to)681-690
    Number of pages10
    JournalJournal of Materials Engineering and Performance
    Volume29
    Issue number1
    DOIs
    StatePublished - 1 Jan 2020

    Bibliographical note

    Funding Information:
    This work was supported by Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS) of the Colombian Government [Contract No. 392-2016]. VP, JR, and PF thank the University of Illinois at Urbana-Champaign for financial support. Characterization experiments were carried out in the Frederick Seitz Materials Research Laboratory Central Facilities, at the University of Illinois at Urbana-Champaign.

    Publisher Copyright:
    © 2020, ASM International.

    Keywords

    • biomaterial
    • biomedical
    • casting and solidification
    • cellular metals
    • magnesium
    • protective cover gas

    Fingerprint

    Dive into the research topics of 'Synthesis and Properties of Mg-Based Foams by Infiltration Casting Without Protective Cover Gas'. Together they form a unique fingerprint.

    Cite this