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Synthesis of Alumina Nanowires in a Cordierite Pore Structure by a CVD Process Using a Powder Source
Author(s) -
Park Si Jung,
Kim Jun Gyu,
Choi Doo Jin
Publication year - 2015
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12385
Subject(s) - materials science , nanowire , cordierite , chemical vapor deposition , tube furnace , deposition (geology) , evaporation , chemical engineering , aluminium , nanotechnology , composite material , ceramic , paleontology , physics , sediment , engineering , biology , thermodynamics
We fabricated a composite cordierite pore structure with alumina (Al 2 O 3 ) nanowires by a chemical vapor deposition ( CVD ) process. The Al 2 O 3 nanowires were grown in a horizontal Al 2 O 3 tube furnace by CVD using an aluminum (Al) powder source without the use of any catalysts at a temperature of 1200°C and a pressure of 0.27 kPa. The source evaporation region was at the center of the furnace, and the nanowire deposition region was at the rear of the furnace. By the transport of evaporated species by a carrier gas, nanowires grew in the inner pores of the cordierite filter region at the rear of the furnace at 1200°C, while nanowires did not grow in the center region at 1400°C. We performed nanowire deposition as a function of the deposition time and determined the relationship between the deposition time and BET surface area.