Conditions Extrêmes et Matériaux : Haute Température et Irradiation
CEMHTI - UPR3079 CNRS
utilisateur non identifié |
Login
Home
Directory
Publications
Research
Facilities
Jobs - News
Access
Past members
CERAM - M.Allix
DEFIR - P.Desgardin
MatRMag - V.Montouillout
NAFMAT - C.Ania
OR2T - O.Rozenbaum
Common Actions
High-Temperatures Facility
Particles Beams Facilities
Vibr. Spectroscopies and Planex
NMR Facility
Softwares
National and European Facilities
all the instruments
Pelletron
Positons
Performances
IBA Techniques
Implantation and Irradiation
IR-RMN in Infranalytics
PANACEA Eu
850 MHz
Diffusion
NMR
dmfit NMR
focus (IR Optics)
Levitation
Electron Microscope
XRay and Neutrons
NMR
IR emission
RAMAN
Accelerators
RAMAN in situ
RAMAN high temp.
RAMAN imaging
News@CEMHTI
Jobs@CEMHTI
Seminars@CEMHTI
View CEMHTI Publication
Return to publication search...
Ask for a reprint
email :
I am not a bot ;-)
* Give your email
2019
ACL
doi
M.Balat-Pichelin, D.De Sousa Meneses, J.Annaloro
,
'Behavior and optical properties of Zerodur® at high temperatures'
, Infrared Phys. Technol. 101 68-77 (2019) doi:
10.1016/j.infrared.2019.06.001
Some optical pieces of satellites orbiting in Low Earth Orbit (LEO) are made in Zerodur®. At the end of the mission and to be compliant with the new French Space Operations Act, the satellite must reenter the atmosphere down to the Earth ground. Thus, it is necessary to measure some properties of Zerodur® such as its melting temperature and total emissivity. Experimental results of the behavior of Zerodur® in air plasma conditions up to 2000 K are presented together with the values of the spectral emissivity up to 1900 K. Then the refractive index and the extinction coefficient can be derived from the emissivity measurement. Finally, the total emissivity is calculated and a polynomial law taking into account the thickness and the temperature is proposed for its implementation in the atmospheric reentry code.