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首页> 外文期刊>Materials science & engineering >Degradation behavior of Ca-Mg-Zn intermetallic compounds for use as biodegradable implant materials
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Degradation behavior of Ca-Mg-Zn intermetallic compounds for use as biodegradable implant materials

机译：用作生物可降解植入材料的Ca-Mg-Zn金属间化合物的降解行为

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摘要

With the goal of developing new biodegradable implant materials, we have investigated the degradation behavior of (Ca, Mg)-based intermetallic compounds. The degradation behavior of the compounds within the Ca-Mg-Zn system was roughly classified into four groups, and their behaviors were strongly influenced by the compositions of the compounds. For example, the Ca_3Mg_xZn_(15-x) compound exhibited a large solubility region with varying the Mg/Zn ratio, and the Ca_3Mg_(12)Zn_3 phase alloy with the lowest Zn content was rapidly broken apart within 6 h of immersion. Alternatively, the Ca_3Mg_(4.6)Zn_(10.4) phase alloy with the highest Zn content retained the bulk shape even after 250 h of immersion. These varying degradation behaviors were ascribed to the difference in the form-ability of Zn oxide as a protective layer against corrosion on the specimen surfaces, depending on the Zn content The gained results suggest that there is a feasibility on developing new biodegradable materials based on intermetallic compounds in which the degradation rate can be controlled by their compositions.
机译：为了开发新的可生物降解的植入物材料，我们研究了（Ca，Mg）基金属间化合物的降解行为。 Ca-Mg-Zn系统中化合物的降解行为大致分为四类，其行为受化合物组成的强烈影响。例如，Ca_3Mg_xZn_（15-x）化合物在Mg / Zn比变化的情况下显示出较大的溶解度区域，并且锌含量最低的Ca_3Mg_（12）Zn_3相合金在浸泡6小时之内迅速破裂。或者，即使浸入250 h，具有最高Zn含量的Ca_3Mg_（4.6）Zn_（10.4）相合金仍保持整体形状。这些不同的降解行为归因于作为保护层的Zn氧化物在样品表面上的防腐蚀能力，取决于Zn含量。所得结果表明，开发基于金属间化合物的新型可生物降解材料是可行的可以通过其组成控制降解速率的化合物。

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  • 来源
    《Materials science & engineering》 |2014年第11期|285-292|共8页
  • 作者

    Koji Hagihara; Shuhei Shakudo; Kenta Fujii; Takayoshi Nakano;

  • 作者单位

    Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan;

    Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan;

    Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan;

    Division of Materials and Manufacturing Science, Graduate School of Engineering Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan;

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  • 正文语种 eng
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  • 关键词

    Biodegradable metallic material; Intermetallic compound; Ca-based alloy; Mg-based alloy; Degradation behavior;

    机译：可生物降解的金属材料;金属间化合物钙基合金;镁基合金;降解行为;

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