scholarly journals Crystal Structure and Thermal Expansion Behavior of La0.7Sr0.3Ga0.7Fe0.2Mg0.1O3-.DELTA. at High Temperature-Effect of Chemical State of Fe and Oxygen Nonstoichiometry-

2009 ◽  
Vol 77 (2) ◽  
pp. 127-130 ◽  
Author(s):  
Ohshi WAKAMATSU ◽  
Akihito KUNO ◽  
Motoyuki MATSUO ◽  
Takuya HASHIMOTO
Keyword(s):  
Crystal Structure ◽  
Thermal Expansion ◽  
High Temperature ◽  
Temperature Effect ◽  
Oxygen Nonstoichiometry ◽  
Chemical State ◽  
Thermal Expansion Behavior ◽  
Expansion Behavior ◽  
High Temperature Effect

Crystal structure and thermal expansion behavior of oxygen stoichiometric lanthanum strontium manganite at high temperature

2014 ◽  
Vol 256 ◽  
pp. 83-88 ◽  
Author(s):  
Yoshikazu Shirai ◽  
Shin-ichi Hashimoto ◽  
Kazuhisa Sato ◽  
Keiji Yashiro ◽  
Koji Amezawa ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Expansion ◽  
High Temperature ◽  
Lanthanum Strontium Manganite ◽  
Thermal Expansion Behavior ◽  
Lanthanum Strontium ◽  
Expansion Behavior

EFFECT OF HIGH TEMPERATURE DEFORMATION ON THE LOW THERMAL EXPANSION BEHAVIOR OF FE-29%NI-17%CO ALLOY

2008 ◽  
Vol 22 (31n32) ◽  
pp. 6016-6021 ◽  
Author(s):  
K. A. LEE ◽  
J. NAMKUNG ◽  
M. C. KIM
Keyword(s):  
Thermal Expansion ◽  
High Temperature ◽  
Strain Rate ◽  
Strain Rate Range ◽  
Theoretical Explanation ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Thermal Expansion Behavior ◽  
Low Thermal Expansion ◽  
Expansion Behavior

The effect of high temperature deformation on the low thermal expansion property of Fe -29 Ni -17 Co alloy was investigated in the compressive temperature range of 900~1300°C at a strain rate range of 25 ~ 0.01 sec. -1. The thermal expansion coefficient (α30~400) generally increased with increasing compressive temperature. In particular, α30~400 increased remarkably as the strain rate decreased at temperatures above 1100°C. Note, however, that α30~400 at low compressive temperatures (900°C and 1000°C) increased abnormally at high strain rates. Based on the investigation of various possibilities of change in low thermal expansion behavior, the experimental results indicated that both the appearance of the α phase and evolution of grain size due to hot compression clearly influenced the low thermal expansion behavior of this invar-type alloy. The correlation between the microstructural cause and invar phenomena and theoretical explanation for the low thermal expansion behavior of Fe -29% Ni -17% Co were also suggested.

High temperature structural and thermal expansion behavior of pyrochlore-type praseodymium zirconate

2015 ◽  
Vol 40 (45) ◽  
pp. 15672-15678 ◽  
Author(s):  
R. Shukla ◽  
K. Vasundhara ◽  
P.S.R. Krishna ◽  
A.B. Shinde ◽  
S.K. Sali ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
High Temperature ◽  
Thermal Expansion Behavior ◽  
Expansion Behavior ◽  
Pyrochlore Type

scholarly journals Synthesis, Structure and Thermophysical Properties of Phosphates MNi0.5Zr1.5(PO4)3 (M = Mg, Ca, Sr)

2010 ◽  
Vol 12 (3,4) ◽  
pp. 241 ◽  
Author(s):  
M.V. Sukhanov ◽  
I.A. Schelokov ◽  
V.I. Pet'kov ◽  
E.R. Gobechiya ◽  
Yu.K. Kabalov ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Heat Capacity ◽  
Thermal Expansion ◽  
High Temperature ◽  
Single Phase ◽  
Rietveld Method ◽  
Type Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Expansion Behavior

<p>New phosphates MNi<sub>0.5</sub>Zr<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> (M = Mg, Ca, Sr) were prepared by the precipitating method.<strong><em> </em></strong>Phosphates were characterized using X-ray powder diffraction, IR-spectroscopy and electron microprobe analyses. The crystal structure of phosphates was refined by the Rietveld method. Phosphates CaNi<sub>0.5</sub>Zr<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> and SrNi<sub>0.5</sub>Zr<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> are shown to have been crystallized in the NaZr<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>-type structure and the phosphate MgNi<sub>0.5</sub>Zr<sub>1.5</sub>(PO<sub>4</sub>)<sub>3 </sub>was obtained as a single-phase with Sc<sub>2</sub>(WO<sub>4</sub>)<sub>3</sub>-type structure. Heat capacity of phosphate CaNi<sub>0.5</sub>Zr<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> was measured in the range 7 – 650 K and increased monotonically over the entire temperature range studied. Thermal expansion of phosphate CaNi<sub>0.5</sub>Zr<sub>1.5</sub>(PO<sub>4</sub>)<sub>3</sub> was studied in the interval 295-1073 K by the high temperature X-ray diffraction. This phosphate is similar to the best low-expansion ceramics, such as zircon, cordierite and silica glass in thermal expansion behavior.</p>

Crack healing, reopening and thermal expansion behavior of Al2TiO5 ceramics at high temperature

2007 ◽  
Vol 27 (2-3) ◽  
pp. 1431-1434 ◽  
Author(s):  
Hyung Chul Kim ◽  
Kee Sung Lee ◽  
Oh Seong Kweon ◽  
Christos G. Aneziris ◽  
Ik Jin Kim
Keyword(s):  
Thermal Expansion ◽  
High Temperature ◽  
Crack Healing ◽  
Thermal Expansion Behavior ◽  
Expansion Behavior
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