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Bimodal nanostructured ceramics based on AlOOH

  • : Yauheni Piatsiushyk1, Dmitry Klevchenya2, Tatsiana Yeutukhova2, Vladimir Ramanenkau2, Tatsiana Pinchuk3
  • : 1State Research and Production Powder Metallurgy Association, 2Belarussian National Technical University, 3State Scientific Institution Powder Metallurgy Institute
  • : PDF Download
  • : 2015


Catalysis, heat transfer devices, ion exchange, filtration (liquids or gases), adsorption, selection, medicine – all of those an incomplete list of applications of the materials with a bimodal pore structure in which the nanoparticles form a developed surface, and the macropores ensure an efficient use of the material volume through rapid transfer of liquids and gases to the developed surface. The method of hydration hardening of dispersed aluminum allows forming a mechanically strong bimodal nanostructured ceramic of AlOOH (Al2O3) composition, bypassing the step of obtaining nanostructured powder. Further increase in the structural characteristics of such materials may be achieved due to the controlled growth of boehmite nanoparticles with required morphology: template synthesis. The method allows forming a material with the specific surface approaching 300-400 m2/g with the total porosity 40…44%, with the size of transport pores up to 20 µm, and com-pressive strength up to 20 Mpa.


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