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首页> 外文会议>International Symposium on Eco-Materials Processing amp; Design; 20060108-11; Chengdu(CN) >Investment Casting of Ti Alloys for Biomedical Application
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Investment Casting of Ti Alloys for Biomedical Application

机译：生物医学用钛合金熔模铸造

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摘要

The aim of this study is to clarify the alpha-case formation mechanisms for the economic net-shape forming of Ti and Ti alloys. The a-case formation reaction between Ti and Al_2O_3 mold was examined in a plasma arc melting furnace. The reaction products were characterized by using an electron probe micro-analyzer and transmission electron microscopy. The α-case generation between Ti and Al_2O_3 mold could not be explained by the conventional α-case formation mechanism, which is known to be formed by the interstitials, especially oxygen dissolved from mold materials. However, on the basis of our experimental results and thermodynamic consideration, it was confirmed that the α-case is formed not only by interstitial oxygen atoms but also by substitutional metal atoms dissolved from mold materials. Based on the α-case formation mechanism, α-case free net-shape forming of Ti and Ti alloys could be possible for biomedical applications.
机译：这项研究的目的是阐明用于Ti和Ti合金的经济净成形的α态形成机制。在等离子弧熔炼炉中检查了Ti与Al_2O_3模具之间的a壳形成反应。通过使用电子探针显微分析仪和透射电子显微镜对反应产物进行表征。 Ti和Al_2O_3模具之间无法产生α态，无法用传统的α态形成机理来解释，传统的α态形成机理是由间隙（尤其是从模具材料中溶解的氧气）形成的。但是，根据我们的实验结果和热力学考虑，可以确定α-壳层不仅由间隙氧原子形成，而且还由溶解在模具材料中的取代金属原子形成。基于α-壳形成机理，Ti和Ti合金的α-壳自由网状成形对于生物医学应用是可能的。

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