Control of nitrogen concentration in liquid lithium by iron–titanium alloy
Control of nitrogen concentration in liquid lithium by iron–titanium alloy
复制标题
铁钛合金控制液态锂中氮浓度
DOI：
10.1016/j.fusengdes.2005.08.048
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Satoru Tanaka
中科院分区：
文献类型：
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作者：
S. Hirakane;T. Yoneoka;Satoru Tanaka
降低液态锂中的氮浓度是创建液态锂包层系统的最重要步骤之一。为了验证Fe-Ti合金的吸氮性能，本研究中，在液态锂中加入Fe-10at.% Ti或Fe-5at.%对钛吸气剂进行了浸泡试验。结果证实了Fe-Ti合金的吸杂性能与V-Ti合金相当，尽管Fe-Ti或V-Ti合金的吸杂效果不持久。浸泡试验结束后，利用XRD、XMA、XPS等分析手段对吸杂材料中氮的存在状态进行了分析。观察到TiN和一些氮溶解在α-Fe中而不形成TiN。结果表明，氮吸杂不仅受到表面氮化物的阻碍，而且受到来自吸附氮的内部扩散势垒的阻碍。
Reducing the nitrogen concentration in liquid lithium is one of the most important steps in creating a liquid lithium blanket system. In this study, in order to verify the nitrogen gettering performance of Fe–Ti alloy, the variation in the nitrogen concentration in liquid lithium, into which Fe–10at.% Ti or Fe–5at.% Ti getter was immersed, was examined. The results confirmed a gettering performance of Fe–Ti alloy comparable to that of V–Ti alloy, although the effects were not durable in either the Fe–Ti or the V–Ti alloy. After the immersion test, the existing states of nitrogen absorbed in the gettering material were analyzed by means of XRD, XMA and XPS. TiN and some nitrogen dissolved in α-Fe without forming TiN were observed. It was indicated that nitrogen gettering is prevented not only by the surface nitrides, but also by the internal diffusion barriers originating from the absorbed nitrogen.