From liquid metal dealloying to liquid metal expulsion

From liquid metal dealloying to liquid metal expulsion
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从液态金属脱合金到液态金属排出

DOI:
10.1007/s10853-020-04599-2
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发表时间:
2020-04
影响因子:
4.5
通讯作者:
Hai-Jun Jin
Hai-Jun Jin
中科院分区:
材料科学3区
文献类型:
--
作者:
Jun-Chao Shao;Hai-Jun Jin

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在液态金属合金化中,假定腐蚀产物(合金化的多孔固体)被液态金属润湿;否则,由于液态金属排出,合金化可能会停止。本文报道了在液态金属脱合金过程中首次观察到液态金属的析出现象——当Mn-C合金在液态Ga中脱合金完成后,液态Ga从多孔C中冲出。相反,与所有先前的报道类似,当in - Pb在液态Ga中合金时,液态Ga被困在多孔Pb中。这表明,尽管腐蚀产物被液态金属排斥,但液态金属合金化仍可进行。我们的研究还揭示了润湿性和固液界面对合金多孔结构形态的影响,这在很大程度上是合金中尚未探索的。
In liquid metal dealloying, it is assumed that the corrosion product (dealloyed porous solids) is wetted by the liquid metal; otherwise, the dealloying may be halted due to liquid metal expulsion. Here, we report the first observation of liquid metal expulsion in liquid metal dealloying—liquid Ga rushes out of porous C when the dealloying of Mn–C alloy in liquid Ga is complete. On the contrary, similar to all previous reports, liquid Ga is trapped in porous Pb when In–Pb is dealloyed in liquid Ga. It suggests that liquid metal dealloying can proceed although the corrosion product is repelled by the liquid metal. Our study also reveals that the wettability and solid/liquid interface significantly influence the morphology of dealloyed porous structure, which has been largely unexplored in dealloying.
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