Joint-stock Company “tvel”

Vladimir Vladimirovich Novikov

Vladislav Konstantinovich Orlov

Leonid Aleksandrovich Karpyuk

Vladimir Andreevich Markelov

Denis Sergeevich Saenko

Kirill Vladimirovich Ozhmegov

Vadim Nikolaevich Solovev

Nadezhda Konstantinovna Filatova

Aleksandr Anatolevich Kabanov

Antonina Vasilevna Nikulina

Mihail Nikolaevich Sablin

Sergei Vladimirovich Chineikin

Aleksandr Gusmanovich Ziganshin

Sergei Vasilevich Lozitckii

Alexander Alexandrovich Maslov

Nikolay Nikolaevich Krasnobaev

Michail Yurjevich Kornienko

Alexander Olegovich Titov

Aaleksandr Vladimirovich Lysikov

Ivan Romanovich Sergienko

Vladimir Ivanovich Kuznetsov

Evgeniy Nikolaevich Mikheev

Timur Tagirovich Gizatullin

Aleksandr Vladimirovich Lysikov

Denis Sergeevich Missorin

Roman Borisovich Sivov

A method of ion-plasma application of corrosion-resistant film coatings on articles made from zirconium alloys includes placing articles in a planetary carousel mechanism, heating the articles, and ion-beam etching and surface activation of the articles using water-cooled unbalanced magnetrons. In addition, the surface of the articles is activated using an ion source which generates gas ions with an accelerating voltage of up to 5000 V and with feeding of a bias voltage to the articles. The coating is applied by using unbalanced and balanced magnetrons simultaneously with a residual induction of the magnetic field from 0.03 T to 0.1 T. The coating is applied to articles which are made from zirconium alloys and are placed vertically in a planetary carousel mechanism. The articles are heated in the coating application process to a temperature of 150-600° C., wherein the heaters are accommodated along the entire length of the articles. This produces corrosion-resistant film coatings of uniform thickness along the outer surface of articles made from zirconium alloys and raises productivity due to an increase in the discharge power density of magnetrons.

Method of ion-plasma application of corrosion-resistant film coatings on articles made from zirconium alloys

Method of manufacturing zirconium alloy tubular products containing (wt. %): niobium—0.9-1.7; iron—0.04-0.10; oxygen—0.03-0.10; silicon—less than 0.02, carbon—less than 0.02, and zirconium—as the base of the alloy. This includes an ingot melting by multiple vacuum arc remelting, mechanical processing of the ingot, heating, hot working of the ingot, subsequent mechanical processing for the production of tubular billets, heat treatment of the tubular billets, application of a protective coating and heating to a hot pressing temperature, hot pressing, removal of the protective coating, multi-stage cold radial forging, vacuum thermal treatment, multiple cold rolling runs with a total deformation degree of 50-80-% per run and a tubular coefficient of Q=1.0-2.7 with intermediate vacuum thermal treatment after each cold rolling operation, and final vacuum thermal treatment of the resulting tubular products carried out at the final size with subsequent final finishing operations.

Method of manufacturing zirconium alloy tubular products

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Moscow, Russia

Vladimir Vladimirovich Novikov