Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Phase formation, stability and heat capacity of ternary TiO2–CeO2–ZrO2 solid solutions. / Kurapova, Olga Yu; Golubev, Sergey N.; Konakov, Vladimir G.; Глухарев, Артем Геннадьевич.
в: Materials Chemistry and Physics, Том 242, 122547, 15.02.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Phase formation, stability and heat capacity of ternary TiO2–CeO2–ZrO2 solid solutions
AU - Kurapova, Olga Yu
AU - Golubev, Sergey N.
AU - Konakov, Vladimir G.
AU - Глухарев, Артем Геннадьевич
PY - 2020/2/15
Y1 - 2020/2/15
N2 - Tetragonal zirconia based solid solutions are important materials for thermal barrier coatings (TBCs). The introduction of the third component to binary zirconia systems is regarded as a promising way to design novel high performance TBCs. The work reports the investigation of solid solution formation in ternary TiO2–CeO2–ZrO2 system in the range 600–1100 °C obtained by using co-precipitation from mixed aqueous solution and freeze-drying. Phase evolution and stability of solid solutions were investigated using DSC, qualitative and quantitative XRD analysis with Rietveld refinement technique. The factors affecting the kinetics of phase formation i.e. powders dispersity, agglomerate strength, crystallite size, Ce3+/Ce4+ ratio were studied using PSD, XRD and ESCA techniques. The heat capacity dependence on temperature was measured experimentally for the first time for 5TiO2–9CeO2–86ZrO2 composition via calorimetry technique using DSC. The obtained data significantly contributes to the schematic phase diagram suggested in the literature and allows to choose the optimal synthesis and processing conditions of ternary system compositions for their use for novel TBCs fabrication.
AB - Tetragonal zirconia based solid solutions are important materials for thermal barrier coatings (TBCs). The introduction of the third component to binary zirconia systems is regarded as a promising way to design novel high performance TBCs. The work reports the investigation of solid solution formation in ternary TiO2–CeO2–ZrO2 system in the range 600–1100 °C obtained by using co-precipitation from mixed aqueous solution and freeze-drying. Phase evolution and stability of solid solutions were investigated using DSC, qualitative and quantitative XRD analysis with Rietveld refinement technique. The factors affecting the kinetics of phase formation i.e. powders dispersity, agglomerate strength, crystallite size, Ce3+/Ce4+ ratio were studied using PSD, XRD and ESCA techniques. The heat capacity dependence on temperature was measured experimentally for the first time for 5TiO2–9CeO2–86ZrO2 composition via calorimetry technique using DSC. The obtained data significantly contributes to the schematic phase diagram suggested in the literature and allows to choose the optimal synthesis and processing conditions of ternary system compositions for their use for novel TBCs fabrication.
KW - Freeze-drying
KW - Heat capacity
KW - Phase transitions
KW - Ternary system
KW - Thermal barrier coatings
KW - DURABILITY
KW - ZIRCONIA
KW - THERMAL BARRIER COATINGS
KW - EXPANSION
KW - GENERATION
KW - OPPORTUNITIES
UR - http://www.scopus.com/inward/record.url?scp=85077371830&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2019.122547
DO - 10.1016/j.matchemphys.2019.122547
M3 - Article
AN - SCOPUS:85077371830
VL - 242
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
SN - 0254-0584
M1 - 122547
ER -
ID: 51666178