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Portail > Offres > Offre UMR8516-HERVEZ-006 - H/F Applications des techniques de RPE dans l'étude de la stabilité des huiles de base et des lubrifiants formulés

H/F Applications of EPR techniques in studying the stability of base oils and formulated lubricants

This offer is available in the following languages:
Français - Anglais

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General information

Reference : UMR8516-HERVEZ-006
Workplace : VILLENEUVE D ASCQ
Date of publication : Tuesday, September 15, 2020
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 2 November 2020
Proportion of work : Full time
Remuneration : salary between 2643 and 3047 euros gross
Desired level of education : PhD
Experience required : 1 to 4 years

Missions

The agent will be in charge of performing continuous wave EPR experiments for the detection of organic and inorganic radicals. He will be in charge of sample preparation, EPR measurements and interpretations. He will also be responsible for the monthly reporting of the results

Activities

- Understand the ageing process of base oils depending on the group of origin : identify and quantify the different radicals present using spin traps and a computation approach such as DFT

- Screen base/additives couples in order to identify the best chemistries for anti-oxidants : assess the impact of an additive or an additive package on the formation of radicals in base oils

- Understand the stability of performance additives containing paramagnetic centers such as molybdenum : using pure additive or additive package, assess the structural and/or oxidation state changes of paramagnetic centers depending on the ageing process used

- Predict the stability of a base or a formulated lubricant depending on the ageing process involved : establish paramagnetic or radical markers that can be used to predict the stability of a formulated lubricant

Skills

Ph.D. in EPR, knowledge of CW EPR and organic chemistry, use of Spin trap .Fluency in French and/or English

Work Context

The recruited agent will carry out his mission on two sites, namely at LASIRE within the "Magnetic Structural Properties of Materials" team within the RPE platform under the direction of Hervé Vezin.
Part of the work will also be carried out at Total's research centre in Solaize in the analytical department equipped with an EPR EMX Nano spectrometer under the responsibility of Simon Pondaven.

Constraints and risks

No particular constraints or risks

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