Wear resistant high-temperature ceramics based on zirconium dioxide

Wear resistant high-temperature ceramics based on zirconium dioxide

SOLID ELECTROLYTES

Ceramics based on ZrO₂ - MgO
for liquid steel oxidation sensors used for a proximate analysis in metallurgy.
Specifications:
      Operating temperature 1500-1800°C
      Serviceability:
          in low-deoxidized steel with high oxygen activity from 20 to 2000 ppm
          in highly deoxidized steel with low oxygen activity from 1 to 20 ppm
           with the residual aluminum content 0,015 - 0,1%
      Stable range of electromotive force values 2-4 s

Ceramics based on ZrO₂ - Y₂O₃ for oxygen thermodynamic activity sensors working in molten-metal heat-transfer agent (Pb, Pb-Bi) and used in atomic power engineering.
Specifications:
Operating temperature – 350-600°С
Service life – more than 4000 hours

Ceramics based on ZrO₂ - Y₂O₃ with the cathodic platinum coating for oxygen concentration sensors of the electronic systems controlling the supply of fuel in automobile engines.
Specifications:
      Density   – 5,8-6,0 g/cm³
      Bending strength (σ_b) – no less than 450 MPa
      Value of potential on the electrodes at 500°C and air/fuel ratio (λ) –
      0,75 V (at λ = 0,95), 0,25 V (at λ = 1,05)

POWDERS, NANOPOWDERS, CERAMICS based on partially stabilized zirconium dioxide

Powders, nanopowders based on ZrO₂ - Y₂O₃, ZrO₂ - MgO, ZrO₂ - CaO
Production process - chemical deposition from salt solutions.
      Particle size 25-40 nm in agglomerates 1-2 μm
      Homogeneous distribution of the components through the particle volume
      Spherical shape of particles
      High purity
      High sinterability
      The quality of the powders makes it possible to obtain products with the relative density of 97%,
zero porosity, ultimate bending strength of 550-900 MPa.

FRICTION PAIRS, BUSHINGS, DRAW RINGS, LINING PLATES, CONNECTING ELEMENTS OF OPTICAL FIBER COMMUNICATION LINES, CRUCIBLES FOR METAL MELTING, GRINDING BODIES

from ceramics based on ZrO₂ - Y₂O₃, ZrO₂ - MgO, ZrO₂ - CaO
Main physical and mechanical characteristics
      Density    – 5,8-6,0 g/cm³
      Porosity   – 0,0%
      Ultimate bending strength    – 500-700 MPa
      Microhardness, HV      – 1000-1300 kg/mm²
      Fracture toughness, К_1С   – 8-10 MPa•m^1/2
      Chemical resistance to acids, to alkalies   – high
      Melting temperature     – >2500°С

DRAW RINGS

from nanostructured ZrO₂ rowders -
analog of products from hard alloys, alternative to draw rings from natural and artificial diamonds.

Draw rings from nanostructured ZrO2 powders

Application
In cable industry for obtaining wire from aluminum, copper and other materials with the help of drawing equipment.
Advantages
The application of ZrO₂-based nanostructured powders makes it possible to synthesize a ceramic material with crystalline grains 50-200 nm in size under zero porosity and to obtain homogeneous structure which is an essential property for the materials used in drawing equipment.
FSUE "ORPE "Technologiya"

For further information please contact:

Address:	FSUE "ORPE "Technologiya" 15, Kiev St., Obninsk 249035, Kaluga region, Russia
Phones:	+7 (48439) 6 2841, +7 (495) 232 1045 Vikulin Vladimir Vasil'evich General Director Doctor of Technical Sciences, Professor, Academician of the International Academy of Ceramics and International Engineering Academy
Phones:	+7 (48439) 6 4775, +7 (495) 996 3593 Romashin Boris Alexandrovich Head of Department for Foreign Economic Relations
Fax:	+7 (48439) 6 4575
Internet:	http://www.technologiya.ru, http://www1.technologiya.ru
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