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Reference : UMR9001-PHILEC-001
Workplace : PALAISEAU
Date of publication : Tuesday, October 01, 2019
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 November 2019
Proportion of work : Full time
Remuneration : According to experience 2400 to 3000 euros gross
Desired level of education : 5-year university degree
Experience required : 1 to 4 years
Study and structural characterization of materials resulting from the interaction between a source of energy and a metal
Main tasks :
- manipulation of energy beams (HES)
- analysis of the structural modifications of the metal
- correlation between experiments and modeling
- results analysis
- report writing / communications
- solid bases in material characterization and thermodynamics
- analysis of materials and thin layers
- data processing
- good skills in written / oral communication
The interaction between energetic beams and solid mater (metal basically) leads to phase changes and trigger particular kinetics of the liquid phase followed by evaporation and solidification, depending on the amount of energy injected. The structure of these materials is an important issue such as its quantification and analysis tightly related with the interaction region and consequently with the final properties of the material.
Generally, the energy can be transported by photons (laser beam) or energetic electrons – beams that are widely used in several applications like fusion, machining, welding or lithography. This surface treatment knows a gain of interest in the last years. It is known that the interaction occurs very different with respect to the injected energy as it was found by the numerical modeling performed in our lab. The present need focuses on set-up of specific dedicated experiments allowing to check and analyze the correlations the complex phenomena involved.
Precisely, the topic proposed here concerns the characterization of the interaction phenomena by using the solid material or thin film diagnostic techniques, mainly SEM or crystallography. Hence, correlations between the energy, the structure and the model predictions should be found out, aiming the model validation.
During the first stage of the project, an electron beam will be used to bombard the metal, as bulk or granular, evaluating the penetration depth of the beam but also its final structure.
Au cours de la première phase de cette étude, il sera utilisé un faisceau d'électrons agissant sur la
In the second stage, the work will focus on the thermodynamics of the superficial layers crossed by the beam to evaluate the relationship existing between the energy and the structure.
In the third stage of the project, this study will be extended to other sources of energy (e.g. laser).
Constraints and risks
Confidentiality is required.
Activity in a research program within a French academic / industrial consortium.
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