Síntesis de nanocomposites NTC-13%ZrO2 ? (87-x)Al2O3-xFe

Carbon nanotubes (CNT) in a ceramic matrix ? Fe, NTC-13%ZrO2 ? (87-x)Al2 O3 -xFe, (x = 1.9, 4.6 y 6.4%), were obtained usinga combustion synthesis urea-nitrate, calcination treatment and chemical vapor deposition (CCVD) in H2 ?CH4 atmosphere. The effect of the addition of Fe ions on the ceramic matrix was studied and presented. The ceramic powder obtained was calcinedat 1200 C for 2 h to modify the phases present in the solid solution. Subsequently it was introduced in a H2-CH4 reducing atmosphere at 1000 C in order to promote the formation of CNT in the matrix. Both, the solid solution obtained and the composite materials were characterized by X-ray diffraction (XRD) and high resolution scanning electron microscopy (HRSEM).Carbon content and specific surface also were determined. The quality and quantity of CNT present in the nanocomposite powder were related to the concentration of Fe, which significantly modifies their carbon content and specific surface.