Nanoporous Membranes Produced from Polycrystalline Ni-Based Superalloys
Abstract:Porous metal membranes are produced from a two phase system in which the discrete cubic '-precipitates connect during self assembly. In the so called rafting process the cubic particles start to coarsen and finally create a network within the -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.
Document Type: Research Article
Publication date: September 1, 2010
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