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Obninsk "Technology" has developed a new composite material

Obninsk research and production enterprise Technology named after A.G. Romashina
(State Corporation Rostech) has developed a new composite ceramic material based on zirconium
dioxide. The material can withstand thermal shock up to 2000 °C and can be used in aggressive
chemical environments. The created heat-resistant ceramics are intended for the production of
products that operate at high temperatures, Rostech reports.
The composition is based on zirconium
dioxide, which has a unique set of properties:
high strength and hardness, heat resistance
and ionic conductivity, biological inertness and
chemical resistance in metal melts. To achieve
the specified characteristics - high thermal
stability and chemical stability - zirconium
dioxide was synthesized from nanocrystalline
powders with additions of magnesium and
calcium oxides. Thus, a composition was
obtained that possesses the properties of all
the elements included in it.
The new composite ceramic material
was created from domestic raw materials and
is intended for the production of products
subject to thermal shock at operating temperatures up to 2000 °C. The material can be used
for the production of refractory nozzles, nozzles for spraying metal melts, dispensers for
continuous casting of steels, crucibles for induction melting of metals and alloys. A pilot batch of
consumables for the production of metal powders for the production of high-precision products
of the aerospace industry, nuclear power by the additive method has already been manufactured
from a composition based on zirconium dioxide, which successfully passed the first tests.
"Currently, no one produces a composite with such characteristics in Russia, but there
is a demand for it. Products made from this material are indispensable in metallurgy, nuclear
power, and transport engineering. In addition, we will be able to solve the problem of import
substitution of components and consumables that are used both in equipping equipment and in
manufacturing products," said Andrei Silkin, Director General of ONPP Technologiya.

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