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2 175 151

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IPC

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Application

2000117494/06, 2000-07-05

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Start date

2000-07-05

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Actual filing date

2000-07-05

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Published

2001-10-20

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Inventor

Mel'Nikov E.V.Mitin V.I.Krajnov Ju.A.Proselkov V.N.Panjushkin A.K.Kalinushkin A.E.Semchenkov Ju.M.

(73)

Holder

Rnts Institut"

METHOD FOR COATING URANIUM OXIDE PELLETS OR BASE WITH BURNABLE NEUTRON ABSORBER Russian patent published in 2001 - IPC

Abstract RU 2175151 C1

FIELD: production of fuel for nuclear reactors. SUBSTANCE: method involves serial formation of layers on cylindrical surface of pellets so that oxide-containing layers are alternating with zirconium diboride layers. Coating is deposited from vapor phase during thermal decomposition of zirconium boron hydride. Oxygen is periodically supplied to produce oxide-containing layers. Layers of different composition are deposited by means of single apparatus and within single process by varying only one parameter, that is, concentration of oxygen in its mixture with zirconium boron hydride vapors. EFFECT: enhanced reliability of adhesion between pellet surface and coating; reduced unwanted capture of neutrons. 1 dwg, 1 tbl

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RU 2 175 151 C1

Authors

Mel'Nikov E.V.

Mitin V.I.

Krajnov Ju.A.

Proselkov V.N.

Panjushkin A.K.

Kalinushkin A.E.

Semchenkov Ju.M.

Dates

2001-10-20—Published

2000-07-05—Filed