71.5Cu12Si16.5 金屬玻璃的寬帶樣品。通過常規(guī)X射線衍射儀和短波長X射線應(yīng)力分析儀的X射線衍射譜確定了樣品的完全非晶態(tài)結(jié)構(gòu)。在室溫、100kPa壓力條件下,對樣品進(jìn)行了多次的吸、放氫循環(huán)實驗。經(jīng)過10次以上的循環(huán)后,樣品沒有發(fā)生破壞,表現(xiàn)出良好的抗氫脆性能。通過氣體直接滲透的方法進(jìn)一步測試了Pd71.5Cu12Si16.5 金屬玻璃及其同成分晶態(tài)合金的氫滲透性能。在金屬玻璃的過冷液相區(qū)溫度范圍內(nèi),其氫滲透率明顯高于晶態(tài)相,這一結(jié)果由金屬玻璃在該區(qū)間內(nèi)的等溫保持引入了更多的自由體積進(jìn)行解釋。"/>

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Pd71.5Cu12Si16.5金屬玻璃的氫相關(guān)性能
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中國工程物理研究院材料研究所

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Hydrogen-related properties of the Pd71.5Cu12Si16.5 metallic glass
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Institute of Materials,China Academy of Engineering Physics,Mianyang

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    摘要:

    鈀基金屬玻璃在氫相關(guān)工業(yè)中具有潛在的應(yīng)用價值。在本工作中,我們通過電弧熔煉、銅輥甩帶的方法制備了Pd71.5Cu12Si16.5 金屬玻璃的寬帶樣品。通過常規(guī)X射線衍射儀和短波長X射線應(yīng)力分析儀的X射線衍射譜確定了樣品的完全非晶態(tài)結(jié)構(gòu)。在室溫、100kPa壓力條件下,對樣品進(jìn)行了多次的吸、放氫循環(huán)實驗。經(jīng)過10次以上的循環(huán)后,樣品沒有發(fā)生破壞,表現(xiàn)出良好的抗氫脆性能。通過氣體直接滲透的方法進(jìn)一步測試了Pd71.5Cu12Si16.5 金屬玻璃及其同成分晶態(tài)合金的氫滲透性能。在金屬玻璃的過冷液相區(qū)溫度范圍內(nèi),其氫滲透率明顯高于晶態(tài)相,這一結(jié)果由金屬玻璃在該區(qū)間內(nèi)的等溫保持引入了更多的自由體積進(jìn)行解釋。

    Abstract:

    Pd-based metallic glasses have potential applications in hydrogen-related industry. In the present study, we synthesized Pd71.5Cu12Si16.5 metallic glass as wide ribbons by arc melting and copper roller spinning. Their structures were determined by X-ray diffraction spectra using the conventional X-ray diffractometer and also short wavelength X-ray stress analyzer. Fully glassy state of the ribbons is confirmed. Multiple hydrogen absorption and desorption cycles at room temperature under 100kPa were carried out on the samples. No destruction after more than 10 cycles is observed, which demonstrates good hydrogen embrittlement resistance. The hydrogen permeation properties of the Pd71.5Cu12Si16.5 metallic glass and its crystallized counterpart were further tested using direct permeation method. In the supercooled liquid region, the hydrogen permeation rate is obviously higher for the metallic glass form, which could be explained by the increasing free volumes introduced during isothermal stage in this range.

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杜曉清,葉小球,張桂凱,任清波. Pd71.5Cu12Si16.5金屬玻璃的氫相關(guān)性能[J].稀有金屬材料與工程,2018,47(12):3629~3633.[Xiaoqing Du, Xiaoqiu Ye, Guikai Zhang, Qingbo Ren. Hydrogen-related properties of the Pd71.5Cu12Si16.5 metallic glass[J]. Rare Metal Materials and Engineering,2018,47(12):3629~3633.]
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  • 收稿日期:2017-05-24
  • 最后修改日期:2017-06-20
  • 錄用日期:2017-06-26
  • 在線發(fā)布日期: 2019-01-04
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