Alkali Leaching of Ni-Al Alloy Microchannel Lining Layers

We investigate alkali leaching of Ni-Al alloy microchannel lining layers to produce a metallic microreactor for high-temperature catalytic reactions. The microchannels and the lining layers were produced by a powder-metallurgical microchanneling process with Ni powder and Al wires. We explored the conditions for the process to produce an Al3Ni or Al3Ni2 lining layer. The Al concentration of the lining layers was successfully decreased by alkali leaching