Characteristics of Mg-Ca-Zn Alloy Metallic Foam Based on Mg-Zn-CaH₂ System

Abstract:

Mg-Ca-Zn alloy metallic foam has been recently recognized as biodegradable implant. In this present work, the characteristics of Mg-Ca-Zn alloy metallic foam which made by foaming of powder compact based on Mg-Zn-CaH₂ system were investigated. Mg-Zn-CaH₂ powder with nominal compositions of 97.5 weight % Mg, 2 weight % Zn, 0.5 weight % CaH₂ and 96.8 weight % Mg, 2 weight % Zn, 1.2 weight % CaH₂ were prepared by dry milling process for 6 h and characterized by differential thermal analysis (DTA). The prepared powders are pressed for 6.5MPa at room temperature and sintered for 2 h at various temperatures of 350 °C and 600 °C. The alloys were analyzed by x-ray diffraction and scanning electron microscope (SEM). The results indicated that addition of calcium hydride as blowing agent affects phase formation of Mg₂Ca and Mg₂Zn₃, sintering temperature and grain refining of Mg-Ca-Zn alloy.

• Periodical: Advanced Materials Research (Volume 896)
• Pages: 267-271
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.896.267
• Online since: February 2014
• Authors: Ika Kartika*, Yudi Nugraha Thaha, Franciska Pramuji Lestari, Bambang Sriyono
• Keywords: Metallic Foam, Mg-Ca-Zn Alloy, Mg-Zn-CaH₂ System

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