Anodization of the Inner Wall of the Microchannel Formed in Sintered Aluminum Body

Masashi ISHIDA, Tatsuya OHMI, Masatoshi SAKAIRI, Manabu IGUCHI
2011 Journal of the Japanese Society for Experimental Mechanics  
A nanoporous oxide film increased the specific surface area of the inner wall of the microchannel tremendously. In addition, titanium oxide excels at heat resistance and corrosion resistance. These properties are suitable for the catalyst support. A fabrication method of a nanoporous anodic alumina film on the inner wall of a microchannel was investigated. An open microchannel was produced by a powdermetallurgical microchanneling process using Al as a body metal and Zn as a sacrificial-core
more » ... acrificial-core metal. However, the cross-sectional area of the microchannel was larger than that of the sacrificial core; it increased as the compacting pressure increased. The nanoporous alumina film was produced by anodic oxidation of the inner wall of the microchannel. Aluminum is a representative metal which produces the nanoporous anodic oxide film. The heat conductivity of aluminum is about ten times higher than that of titanium. It permits precision temperature control in the microreactors. Furthermore, aluminum density is about 0.6 times titanium density. In addition, aluminum is an inexpensive common metal. Key words In this study, we investigated the anodic oxidation of the inner wall of the microchannel produced in an aluminum body.
doi:10.11395/jjsem.11.s267 fatcat:2j55ds777jhqzknd5khncn6q3m