Anomalous heating rate response of beta irradiated Sm3+ and Tb3+ doped BaAl2O4 phosphors

2018 ◽  
Vol 764 ◽  
pp. 523-529 ◽  
Author(s):  
Ü.H. Kaynar ◽  
E. Guvener ◽  
M. Ayvacikli ◽  
T. Dogan ◽  
S. Balci-Yegen ◽  
...  
2017 ◽  
Vol 128 ◽  
pp. 256-262 ◽  
Author(s):  
Tamer Dogan ◽  
Mehmet Yüksel ◽  
Sibel Akça ◽  
Ziyafer Gizem Portakal ◽  
Sümeyra Balci-Yegen ◽  
...  

2013 ◽  
Vol 51-52 ◽  
pp. 40-47 ◽  
Author(s):  
Vasilis Pagonis ◽  
Leigh Blohm ◽  
Mark Brengle ◽  
Gina Mayonado ◽  
Patrick Woglam

Author(s):  
G. Mackiewicz Ludtka

Historically, metals exhibit superplasticity only while forming in a two-phase field because a two-phase microstructure helps ensure a fine, stable grain size. In the U-5.8 Nb alloy, superplastici ty exists for up to 2 h in the single phase field (γ1) at 670°C. This is above the equilibrium monotectoid temperature of 647°C. Utilizing dilatometry, the superplastic (SP) U-5.8 Nb alloy requires superheating to 658°C to initiate the α+γ2 → γ1 transformation at a heating rate of 1.5°C/s. Hence, the U-5.8 Nb alloy exhibits an anomolous superplastic behavior.


2020 ◽  
pp. 40-45
Author(s):  
Nadezhda O. Vzduleva ◽  
Valery B. Gitlin

The problems of ensuring the stability of the temperature of the chromatographic experiment carried out using a serial gas chromatograph LGH-3000 are considered. Limiting the permissible heating rate of the chromatograph thermostats does not allow a quick transition to the new conditions of the chromatographic experiment in accordance with the requirements of the technical conditions. The processes of heating and cooling the thermostat are analyzed. It is shown that the ratio of the duration of the interval equal to the sum of the durations of the heating and cooling intervals to the duration of the heating interval is inversely proportional to the temperature of the chromatographic experiment. Based on this situation, an empirical algorithm is proposed for heating the thermostat to a given temperature, which made it possible to reduce the time it takes to reach a given temperature in the entire range of operating temperatures.


2020 ◽  
Vol 63 (8) ◽  
pp. 357-362
Author(s):  
K. B. Larionov ◽  
I. V. Mishakov ◽  
A. V. Zenkov ◽  
K. V. Slyusarskiy ◽  
A. A. Gromov
Keyword(s):  

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