Nanoporous Membranes Produced from Polycrystalline Ni-Based Superalloys
Nanoporous Membranes Produced from Polycrystalline Ni-Based Superalloys
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DOI：
10.1166/jnn.2010.2586
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发表时间：
2010-09-01
影响因子：
--
通讯作者：
Roesler, Joachim
中科院分区：
文献类型：
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作者：
Schmitz, Fabian;Roesler, Joachim
多孔金属膜是由两相系统产生的，其中离散的立方γ′沉淀在自组装过程中连接。在所谓的漂流过程中，立方粒子开始变粗，最终在伽马矩阵内形成一个网络。在随后的电化学浸出过程中，其中一相可以被去除，留下纳米孔膜。到目前为止，单晶合金已被用于制造纳米多孔薄膜。目前，多晶合金蠕变法制备纳米多孔膜的研究正在进行中。改性的市售合金Nimonic 115用于这些膜。在气体流动试验中证实了这些膜的渗透性。
Porous metal membranes are produced from a two phase system in which the discrete cubic gamma'-precipitates connect during self assembly. In the so called rafting process the cubic particles start to coarsen and finally create a network within the gamma-matrix. In a following electrochemical leaching process one of the phases can be removed leaving the nanoporous membrane. So far, single crystalline alloys have been used for producing thin nanoporous membranes. Now research is in progress to produce the nanoporous membranes from polycrystalline alloys in a creep process. A modification of the commercially available alloy Nimonic 115 was used for these membranes. The permeability of these membranes was proven in a gas-flow test.