DOI: 10.2298/sos260807009u ISSN: 0350-820X
Deposition of $ \mathrm{Gd_2O_3} $ coatings by detonation spraying
Vladimir Ulianitsky, Igor Batraev, Denis Rybin, Konstantin Kuper, Alexandr Shtertser, Boris Bokhonov, Olga Podgornova, Alexander Kalinkin, Dina Dudina, Eduard Pruuel, Ivan Rubtsov
\mathrm{Gd_2O_3}
coatings were formed by detonation spraying for the first time. The coatings were sprayed using
\mathrm{Gd_2O_3}
and
\mathrm{Gd_2O_2S}
as feedstock powders. The spraying was conducted under oxidizing conditions using
\mathrm{C_2H_2+2.5O_2}
mixture. The
\mathrm{Gd_2O_2S}
transformed into
\mathrm{Gd_2O_3}
during spraying. Coatings 100 μm thick were formed on Al substrates. The velocities and temperatures of
\mathrm{Gd_2O_3}
particles accelerated in the barrel of the detonation gun were calculated. During spraying, the
\mathrm{Gd_2O_3}
particles experienced melting. Spraying of both feedstock powders resulted in the formation of monoclinic
\mathrm{Gd_2O_3}
. The coatings demonstrated luminescence when subjected to synchrotron radiation. The coating obtained from the
\mathrm{Gd_2O_2S}
feedstock powder demonstrated a higher intensity of luminescence than the coating obtained from the oxide. Aluminium plates coated with
\mathrm{Gd_2O_3}
derived from the oxide and
\mathrm{Gd_2O_2S}
feedstock powders were successfully employed as phosphor screens in the beam position monitor at the VEPP-3 synchrotron (Budker Institute of Nuclear Physics SB RAS).