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Coefficient of Thermal Expansion and Dynamic Response to Pulsed Energy Deposition in HfO 2 ‐TiO 2 Compositions
Author(s) -
CARLSON G. A.,
ANDERSON J. L.,
BRIESMEISTER R. A.,
SKAGGS S. R.,
RUH ROBERT
Publication year - 1977
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.1151-2916.1977.tb14094.x
Subject(s) - thermal expansion , deposition (geology) , analytical chemistry (journal) , materials science , thermal , mineralogy , thermodynamics , chemistry , composite material , geology , paleontology , physics , sediment , chromatography
The coefficient of thermal expansion and the dynamic response to pulsed energy deposition were investigated in the 25 to 60 mol% TiO 2 region of the system HfO 2 ‐TiO 2 . Thermal expansion results revealed very low coefficients (≅1 × 10 −6 /°C) for the 30 to 40% compositions and relatively high coefficients (≅3 × 10 −6 /°C) for the 45 to 60% TiO 2 compositions. The 25% TiO 2 composition fell between these two groups. Dynamic response measurements revealed considerably lower free surface velocities for the 30 to 40% TiO 2 compositions than for the 45 to 50% TiO 2 compositions. Calculation of Grueneisen parameters, using the thermal expansion and dynamic response data, revealed low values for the 30 to 40% TiO 2 compositions and an increase by a factor of 2 to 3 for the 45 and 50% TiO 2 compositions.