scholarly journals Thermal Diffusivity of Ceramics During Neutron Irradiation

10.5772/18461 ◽  
2011 ◽  
Author(s):  
Masafumi Akiyoshi ◽  
Hidetsugu Tsuchida ◽  
Toyohiko Yano
Keyword(s):  
Thermal Diffusivity ◽  
Neutron Irradiation

Effect of neutron irradiation on thermal diffusivity of tungsten–rhenium alloys

2000 ◽  
Vol 283-287 ◽  
pp. 1148-1151 ◽  
Author(s):  
M Fujitsuka ◽  
B Tsuchiya ◽  
I Mutoh ◽  
T Tanabe ◽  
T Shikama
Keyword(s):  
Thermal Diffusivity ◽  
Neutron Irradiation

Evaluation of effective thermal diffusivity of Li2TiO3 pebble bed under neutron irradiation

2003 ◽  
Vol 69 (1-4) ◽  
pp. 263-267 ◽  
Author(s):  
H. Kawamura ◽  
A. Kikukawa ◽  
K. Tsuchiya ◽  
H. Yamada ◽  
M. Nakamichi ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
Neutron Irradiation ◽  
Pebble Bed ◽  
Effective Thermal Diffusivity

Voids in Irradiated Tungsten and Molybdenum

1969 ◽  
Vol 27 ◽  
pp. 190-191
Author(s):  
Robert C. Rau ◽  
Robert L. Ladd
Keyword(s):  
Melting Point ◽  
Fast Neutron ◽  
Neutron Irradiation ◽  
Elevated Temperatures ◽  
Irradiation Temperature ◽  
The Body ◽  
Face Centered Cubic ◽  
Body Centered Cubic ◽  
Cubic Metals ◽  
Face Centered

Recent studies have shown the presence of voids in several face-centered cubic metals after neutron irradiation at elevated temperatures. These voids were found when the irradiation temperature was above 0.3 Tm where Tm is the absolute melting point, and were ascribed to the agglomeration of lattice vacancies resulting from fast neutron generated displacement cascades. The present paper reports the existence of similar voids in the body-centered cubic metals tungsten and molybdenum.

Photopyroelectric Measurement of the Thermal Diffusivity of Recrystallized High Purity Aluminum

1991 ◽  
Vol 3 (1) ◽  
pp. 69-80
Author(s):  
S. B. Peralta ◽  
S. C. Ellis ◽  
C. Christofides ◽  
A. Mandeiis ◽  
H. Sang ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
High Purity ◽  
High Purity Aluminum

THERMAL DIFFUSIVITY OF POLYMER FOILS - SEMICRYSTALLINE PETP AND PE - AS A FUNCTION OF DRAWING

1983 ◽  
Vol 44 (C6) ◽  
pp. C6-463-C6-467 ◽  
Author(s):  
B. Merté ◽  
P. Korpiun ◽  
E. Lüscher ◽  
R. Tilgner
Keyword(s):  
Thermal Diffusivity ◽  
Polymer Foils

About definition of the local entropy rate of production in experiment of pulse electric heating

2020 ◽  
pp. 29-34
Author(s):  
Alexandr V. Kostanovskiy ◽  
Margarita E. Kostanovskaya
Keyword(s):  
Thermal Diffusivity ◽  
Electric Heating ◽  
Thermal Capacity ◽  
Entropy Rate ◽  
Initial Time ◽  
Local Entropy ◽  
Linear Mode ◽  
Electric Capacity ◽  
Definition Of ◽  
Pulse Electric

Work is devoted to studying of a linear mode thermodynamic – a mode which is actively investigated now. One of the main concepts of a linear mode – local entropy rate of production. The purpose of given article consists in expansion of a circle of problems for which it is possible to calculate a local entropy rate of production, namely its definition, using the experimental “time-temperature” curves of heating/cooling. “Time-temperature” curves heating or cooling are widely used in non-stationary thermophysical experiments at studying properties of substances and materials: phase transitions of the first and second sort, a thermal capacity, thermal diffusivity. The quantitative substantiation of the formula for calculation of the local entropy rate of production in which it is used thermogram (change of temperature from time) which is received by a method of pulse electric heating is resulted. Initial time dependences of electric capacity and temperature are measured on the sample of niobium in a microsecond range simultaneously. Conformity of two dependences of the local entropy rate of production from time is shown: one is calculated under the known formula in which the brought electric capacity is used; another is calculated, using the thermogram.

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