Three-dimensional open-cell macroporous iron, chromium and ferritic stainless steel
Three-dimensional open-cell macroporous iron, chromium and ferritic stainless steel
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DOI：
10.1016/j.scriptamat.2013.01.011
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发表时间：
2013-05
影响因子：
6
通讯作者：
T. Wada;H. Kato
中科院分区：
文献类型：
--
作者：
T. Wada;H. Kato
用金属熔体脱合金化法制备了开孔大孔Fe、Cr及其合金。通过将(Fe，Cr)30Ni70前驱体浸泡在镁熔体中，镍选择性地溶解到镁中，其余组分形成双连续结构。对熔体中热粗化的分析表明，多孔结构的演变受熔体与前驱体之间的界面扩散控制。因此，形成纳米孔结构的潜在机制与在水溶液中相同。
Open-cell macroporous Fe, Cr and their alloys were prepared by dealloying with a metallic melt. By immersing (Fe, Cr)30Ni70precursors in a Mg melt, Ni selectively dissolved into the Mg and the remaining components formed a bicontinuous structure. Analyses of the thermal coarsening in the melt reveal that evolution of the porous structure is controlled by interfacial diffusion between the melt and precursor solid. The underlying mechanism for the nanoporous structure formation is therefore the same as that in aqueous solution.