COMPOSITION AND STRUCTURE OF THE SURFACE OF HIGHLY POROUS MATERIALS BASED ON ZIRCONIA STABILIZED WITH YTTRIA
https://doi.org/10.17073/1997-308X-2016-4-68-75
Abstract
Highly porous permeable materials were obtained from zirconia nanopowders stabilized with 2, 3 and 7 mol.% of yttria by duplicating the polymer matrix. It was found that samples feature a complex surface relief formed by sintered powder agglomerates obtained as a result of sintering treatment. Raman spectroscopy showed that the phase composition of material surfaces is identical to the phase composition of initial nanopowders and was only presented by the tetragonal modification in all the reviewed cases. The study demonstrated that the application of nickel (active catalytic component) from nickel nitrate solutions or by metallic nickel deposition on the surface of ZrO2 stabilized with 3 mol.% of Y2O3 led to a monoclinic modification. Only tetragonal modification was identified on the surface of highly porous ZrO2 samples stabilized with 2 and 7 mol.% of Y2O3. The peak decomposition procedure recorded a shift in the integrated intensity of peaks towards the lines typical for monoclinic modification.
About the Authors
S. E. Porozova
PNRPU
Russian Federation
Dr. Sci. (Tech.), prof., Department of materials, technology and design of machines, Perm National Research Polytechnic University (PNRPU), senior researcher of the Centre of powder material science of PNRPU
Russian Federation
Dr. Sci. (Tech.), prof., Department of materials, technology and design of machines, Perm National Research Polytechnic University (PNRPU), senior researcher of the Centre of powder material science of PNRPU
A. A. Smetkin
PNRPU
Russian Federation
Cand. Sci. (Tech.), associate prof., Department of materials, technology and design of machines, PNRPU, senior researcher of the Centre of powder material science of PNRPU
Russian Federation
Cand. Sci. (Tech.), associate prof., Department of materials, technology and design of machines, PNRPU, senior researcher of the Centre of powder material science of PNRPU
I. V. Solnyshkov
PNRPU
Russian Federation
postgraduate student, Department of materials, technology and design of machines, PNRPU, senior researcher of the Centre of powder material science of PNRPU
Russian Federation
postgraduate student, Department of materials, technology and design of machines, PNRPU, senior researcher of the Centre of powder material science of PNRPU
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Review
For citations:
Porozova S.E., Smetkin A.A., Solnyshkov I.V. COMPOSITION AND STRUCTURE OF THE SURFACE OF HIGHLY POROUS MATERIALS BASED ON ZIRCONIA STABILIZED WITH YTTRIA. Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya). 2016;(4):68-75. (In Russ.) https://doi.org/10.17073/1997-308X-2016-4-68-75
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