Open AccessStructure and properties of ceramic-like coating on zirconium alloy produced by microarc oxidation in electrolyte with submicron yttria powder additives
Author(s) -
Г. В. Сивцова,
С. В. Савушкина,
А. А. Ашмарин,
И. В. Суминов,
А. В. Виноградов
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1396/1/012039
Subject(s) - materials science , yttria stabilized zirconia , cubic zirconia , zirconium , coating , electrolyte , scanning electron microscope , indentation hardness , ceramic , alloy , sintering , plasma electrolytic oxidation , metallurgy , chemical engineering , composite material , microstructure , chemistry , electrode , engineering
Ceramic-like coatings were formed on zirconium-niobium (Nb – 1%) alloy by microarc oxidation (MAO) in slurry electrolyte with the addition of submicron yttria powder. The coatings were investigated using scanning electron microscopy, x-ray diffraction analysis, microhardness tester and roughness meter. The addition of submicron yttria powder in electrolyte leads to content reduction of zirconia monoclinic phase in MAO coating. The inhibition effect increases with the MAO coating thickness rise and with an increase of the process current density up to 30 A/dm 2 .