Phosphor Thermometry of Alumina-Forming High-Temperature Alloys Using Luminescent Rare-Earth Ions in YAG: Proof of Concept Using a Dispersion of Ce3+ -Doped YAG Particles in a FeCrAl Alloy
Journal article, 2023

Most high-temperature processes require monitoring and controlling temperature, preferably with high precision and good lateral resolution. Here we evaluate the use of the technique commonly known as phosphor thermometry, which exploits the temperature dependent photoluminescence from an inorganic phosphor, for the determination of the temperature of a composite material consisting of the metallic alloy FeCrAl dispersed with phosphor particles of yttrium aluminum garnet (Y3Al5O12, YAG) doped with a small amount of luminescent Ce3+ ions (YAG:Ce3+). The results show that with some optimization and by changing the dopant ion, YAG based phosphor particles offer a unique opportunity to measure the surface temperature of metal alloys with high precision and high lateral resolution, all the way up to the maximum working temperature of alumina-forming high temperature alloys at ca. 1300 °C.

Author

Aymen Yangui

Chalmers, Chemistry and Chemical Engineering, Energy and Material

Tommy Sand

Chalmers, Chemistry and Chemical Engineering, Energy and Material

T. Helander

Kanthal AB

Lars-Gunnar Johansson

Chalmers, Chemistry and Chemical Engineering, Energy and Material

Maths Karlsson

Chalmers, Chemistry and Chemical Engineering, Energy and Material

ECS Journal of Solid State Science and Technology

2162-8769 (ISSN) 2162-8777 (eISSN)

Vol. 12 3 036001

Synchroton X-ray studies of formation of luminescent particles for temperature sensing in FeCrAl steel

VINNOVA (2019-05306), 2020-03-01 -- 2021-10-31.

Subject Categories

Ceramics

Materials Chemistry

Other Materials Engineering

DOI

10.1149/2162-8777/acc092

More information

Latest update

4/12/2023