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Plasma‐Sprayed‐Yttria Layers for Corrosion Resistance
Author(s) -
Berkowski Marek,
Bowen Paul,
Liechti Thomas,
Scheel Hans Jörg
Publication year - 1992
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1992.tb04175.x
Subject(s) - corrosion , materials science , yttria stabilized zirconia , crucible (geodemography) , metallurgy , substrate (aquarium) , ceramic , metal , composite material , cubic zirconia , chemistry , computational chemistry , oceanography , geology
Crucible corrosion in the growth of YBa 2 Cu 3 O 7‐ x (YBCO) superconducting single crystals is one of the major obstacles in obtaining high‐quality crystals. Both metallic and ceramic crucibles have shown significant corrosion that affects the size and properties of YBCO crystals. Plasma spraying has been successfully used to produce yttria coatings on alumina substrates. Yttria coatings with thicknesses between 30 and 100 μm have shown corrosion rates of 3 to 4 μm/h; these rates are 5 to 10 times lower than that of the alumina substrate.