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Hydrogenation and Dehydrogenation Analysis for Nb47Ti Bars
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Hydrogenation and Dehydrogenation Analysis for Nb47Ti Bars
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National Natural Science Foundation of China (50824001)

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    摘要:

    利用RH600熱導(dǎo)式氫分析儀對尺寸為Φ50 mm×40 mm 的Nb47Ti合金試樣在RX-460型工業(yè)電爐中做不同制度熱處理后的氫含量變化進行了系統(tǒng)分析，對防止Nb47Ti合金熱處理過程中吸氫現(xiàn)象提出了有效的解決措施。結(jié)果表明，Nb47Ti合金的吸氫現(xiàn)象主要發(fā)生在1200 ℃高溫?zé)崽幚淼沫h(huán)節(jié)，在隨后的 950，930和 900 ℃進行的熱處理過程不會使 Nb47Ti 合金吸氫。Nb47Ti合金熱加工過程中氫元素增加是由于在1200 ℃高溫條件下加熱爐內(nèi)稀薄的含氫氣氛和Nb及Ti元素物理化學(xué)性能比較活潑的綜合作用造成的。6×10-2 Pa條件下，800 ℃/3 h 和 800 ℃/6 h真空熱處理制度使原始H含量為 60 μg/g 的Nb47Ti合金的氫含量分別降低到 21和 29 μg/g

    Abstract:

    The equipment of RH600 Hydrogen Analyzer (Fusion) was adopted to measure the hydrogen content of Nb47Ti alloy bars, with Φ50 mm×40 mm after different annealing processes in RX-460 electric furnace. Based on the analysis results, a dehydrogenation method was proposed. The results indicate that the main hydrogenation takes place at the annealing temperature of 1200 oC, while the hydrogenation can not occur in the subsequent annealing at 950, 930 and 900 oC. The hydrogenation phenomenon occurring in Nb47Ti alloy is mainly attributed to the joint effect of the high activity constituent elements and the rare hydrogen atmosphere. The 800 oC/3 h and 800 oC/6 h vacuum heat treatment can reduce the hydrogen content in Nb47Ti alloy effectively from 60 μg/g to 21 and 29 μg/g, respectively

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鄭永健,周 廉,介萬奇,劉向宏,付寶全,張 奕. Hydrogenation and Dehydrogenation Analysis for Nb47Ti Bars[J].稀有金屬材料與工程,2014,43(11):2627~2630.[Zheng Yongjian, Zhou Lian, Jie Wanqi, Liu Xianghong, Fu Baoquan, Zhang Yi. Hydrogenation and Dehydrogenation Analysis for Nb47Ti Bars[J]. Rare Metal Materials and Engineering,2014,43(11):2627~2630.]
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  • 收稿日期:2013-11-25
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  • 在線發(fā)布日期: 2015-04-07
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