Open AccessStudy of nanocomposite hafnia and zirconia based layers produced by plasma spraying
Author(s) -
С. В. Савушкина,
А. М. Борисов,
И. В. Суминов,
Е. А. Высотина,
А. А. Ашмарин
Publication year - 2021
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 - 10.1088/1742-6596/2144/1/012019
Subject(s) - materials science , hafnia , nanocomposite , thermal stability , scanning electron microscope , cubic zirconia , analytical chemistry (journal) , layer (electronics) , microanalysis , mineralogy , chemical engineering , composite material , chemistry , ceramic , organic chemistry , chromatography , engineering
Nanostructured and nanocomposite layers NiCoCrAlY+ ZrO 2 -7%Y 2 O 3 , ZrO 2 -7% Y 2 O 3 +HfO 2 -9%Y 2 O 3 , HfO 2 -9%Y 2 O 3 with thickness of ∽ 20 μm were formed by low pressure plasma spraying. The structure and composition of the layers have been studied using a scanning electron microscopy, X-ray microanalysis, and XRD analysis. Thermal stability of the coatings has been analyzed using synchronous thermal analysis at temperatures up to 1600 °C. The results of structure and composition analysis of ZrO 2 -7%Y 2 O 3 +HfO 2 -9%Y 2 O 3 layer suggest the formation ofnanocomposite co-doped regions of the ZrO 2 -HfO 2 -Y 2 O 3 solid solution. The layer has greater thermal stability at temperatures up to 1600 ° C and a smaller subgrain size (∽ 33 nm) than for the ZrO 2 -7% Y 2 O 3 and HfO 2 -9%Y 2 O 3 layers.