Optimization of synthesis and compositional parameters of magnesium germanate and fluoro-germanate thermographic phosphors

2018 ◽  
Vol 734 ◽  
pp. 29-35 ◽  
Author(s):  
Amjad Ali ◽  
Laraib Sarfraz Khanzada ◽  
Amir Hashemi ◽  
Carsten Polzer ◽  
Andres Osvet ◽  
...  
Keyword(s):  
Thermographic Phosphors ◽  
Magnesium Germanate

Investigation on wall and gas temperatures inside a swirled oxy-fuel combustion chamber using thermographic phosphors, O2 rotational and vibrational CARS

Fuel ◽  
2021 ◽  
Vol 289 ◽  
pp. 119787
Author(s):  
Christian Meißner ◽  
Henrik Schneider ◽  
Evaggelos Sidiropoulos ◽  
Jonas I. Hölzer ◽  
Tim Heckmann ◽  
...  
Keyword(s):  
Combustion Chamber ◽  
Fuel Combustion ◽  
Thermographic Phosphors

scholarly journals A First Application of Thermographic Phosphors in a Marine Two-Stroke Diesel Engine for Surface Temperature Measurement

2014 ◽  
Author(s):  
Fahd Abou Nada ◽  
Johan Hult ◽  
Christoph Knappe ◽  
Mattias Richter ◽  
Stefan Mayer ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Coating Thickness ◽  
Surface Coating ◽  
Cylinder Wall ◽  
Load Range ◽  
Marine Research ◽  
Surface Temperature Measurement ◽  
Thermographic Phosphors ◽  
Phosphor Thermometry ◽  
First Time

Phosphor thermometry is applied for the first time in a large-bore two-stroke diesel engine. The work proves the practicality of phosphor thermometry in large-bore engines. The experiments were conducted on the MAN 4T50ME-X marine research engine equipped with an optical cylinder head. By employing a thin surface coating of CdWO4 phosphor, cycle resolved temperature measurements of the cylinder wall were obtained. Motored and fired engine operations were tested at engine loads covering the low and medium engine load range. Phosphor thermometry proved to be successful in retrieving the temperature with standard deviations ranging around 1–8 K. Experimental considerations like detector linearity, coating thickness and an automated phosphor calibration routine will be addressed.

Orthoenstatite to forsterite phase transformation in magnesium germanate ceramics

2019 ◽  
Vol 45 (6) ◽  
pp. 7878-7884
Author(s):  
Giuseppe Viola ◽  
Fabiana D’Isanto ◽  
Vladimir Koval ◽  
Grzegorz Cempura ◽  
Haixue Yan ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Magnesium Germanate

Temperature measurement of a curved surface using thermographic phosphors

1995 ◽  
Vol 11 (4) ◽  
pp. 387-394 ◽  
Author(s):  
J. Ervin ◽  
C. Murawski ◽  
C. MacArthur ◽  
M. Chyu ◽  
D. Bizzak
Keyword(s):  
Temperature Measurement ◽  
Curved Surface ◽  
Thermographic Phosphors

Luminescence Properties of the Thermographic Phosphors Dy3+:YAG and Tm3+:YAG for the Application in High Temperature Systems

2015 ◽  
Vol 229 (6) ◽  
Author(s):  
Gordana Jovicic ◽  
Lars Zigan ◽  
Stefan Will ◽  
Alfred Leipertz
Keyword(s):  
High Temperature ◽  
Dopant Concentration ◽  
Luminescence Decay ◽  
Host Crystal ◽  
Thermographic Phosphors ◽  
Thermographic Phosphor ◽  
Intensity Ratios ◽  
High Temperature Sensitivity ◽  
Phosphorescence Spectra ◽  
Temperature Applications

AbstractThe high temperature sensitivity of the luminescence emission of thermographic phosphor (TP) particles favours its utilization for the measurement of wall or gas temperatures in combustion devices. The present work focuses on the luminescence behavior and suitability of two lanthanide ion types (Tm and Dy) doped in a YAG host crystal for high temperature applications. The Dy:YAG is a well-known thermographic phosphor and is used here as a reference for the comparison with Tm:YAG TP. Additionally its dopant concentration is varied to improve its signal intensity for high temperature applications. For the studied thermographic phosphors phosphorescence spectra, intensity ratios and luminescence decay time are characterized for a wide temperature range up to 1573 K.

Cation stacking faults in magnesium germanate spinel

1981 ◽  
Vol 7 (6) ◽  
pp. 241-245 ◽  
Author(s):  
P. J. Vaughan ◽  
D. L. Kohlstedt
Keyword(s):  
Stacking Faults ◽  
Magnesium Germanate
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