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On corrosion properties of ceramic materials for pump friction pairs in lead – bismuth environment

https://doi.org/10.22349/1994-6716-2019-98-2-116-122

Abstract

We consider the results of studies on the choice of material of the lower radial bearing of the pump, designed to circulate the coolant lead – bismuth. The circulation of the liquid coolant is provided by a vertical axial pump having a “long” shaft. In this design it is necessary to provide for the lower bearing the lubrication carried out with lead – bismuth coolant. Having analyzed the operating conditions of the axial pump, we decided to carry out the lower bearing in accordance with the scheme of a hydrodynamic sliding bearing. The materials of friction pairs in such a bearing must withstand the stresses arising from the operation of the pump, as well as the aggressive conditions of the coolant. Non-metallic materials – ceramics and carbon-based composite materials – were selected basing on the study of literature data for experimental research on the corrosion and heat resistance in the lead-bismuth environment.

 

About the Authors

V. V. Stepanov
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation


A. D. Kashtanov
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Cand Sc. (Eng)


S. U. Shchutsky
JSC “CDBMB”
Russian Federation


A. N. Agrinsky
JSC “CDBMB”
Russian Federation


N. I. Simonov
JSC “CDBMB”
Russian Federation


References

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Review

For citations:


Stepanov V.V., Kashtanov A.D., Shchutsky S.U., Agrinsky A.N., Simonov N.I. On corrosion properties of ceramic materials for pump friction pairs in lead – bismuth environment. Voprosy Materialovedeniya. 2019;(2(98)):116-122. (In Russ.) https://doi.org/10.22349/1994-6716-2019-98-2-116-122

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ISSN 1994-6716 (Print)