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HeRHEA meeting #2

→ Europe/Helsinki
Accelerator laboratory (Online zoom )

Accelerator laboratory

Online zoom

Kiihdytinlaboratorio, 115, Accelerator laboratory, upstairs seminar room (25) Topic: HeRHEA meeting #2 Time: Nov 14, 2024 02:00 PM Helsinki Join Zoom Meeting https://helsinki.zoom.us/j/66738920343?pwd=pqEMGMEmgTTc88bGwnYva9Ix6bYmfy.1 Meeting ID: 667 3892 0343 Passcode: 018356 --- Join by SIP 66738920343@109.105.112.236 • 66738920343@109.105.112.235 --- Join by H.323 • 109.105.112.236 • 109.105.112.235 Meeting ID: 667 3892 0343 Passcode: 018356
Flyura Djurabekova (VTT), Guanying Wei (VTT)
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Third minutes for HeRHEA (14th November,2024):

Two new postdoctorals from IJC and CEMHTI group

Guanying report her modelling results.

To do: check the little amount V in WV by modelling.

 

Marie-France

PIMAT (Plasma irradiation in Materials) check the device ,first test

Zhehao visit in 10-20 December

W,WV,WNbV samples 300 nm  layer    grow on MgO substrates, do experiments in CEMHTI

(Summary: AFM on He exposed single crystal,A new device to control ion density in plasma, work plan for Zhehao’s visit)

Questions: Delivery of HEA, cutting in France, who pays?

(VTT is responsible for the Finfusion. Tomi will check the financial. Final meeting will be in the France(at least 2 days).)

 

VTT Tomi:

 

W WTa WMo WTaMo WV(not sure the V, how much,homogenous?)

Cut and check the microstructure

Quantity of different materials

1cm, Marie-France(at most 1mm)  Aurelie: 7*7 *0.5 mm  

VTT cut the sample to small piece and delivery to France. Marie-France

 will polish the sample in her lab. What technical skill to check the V?

 

 

Aurelie

Task: observing the bubbles nucleation and growth by in situ ion TEM

W, WMo, WTa, WV

WTaCrV thin film, 200keV He+ at RT   (Publication,)

Future work: prepare TEM thin foils?Ex situ + in situ TEM? Analyze the data.

Marie-France asks Tomi can they do annealing?

 

Zhehao

FCC Cantor HEA, annealing, Temp above 873K, (3D:large He bubbles, HEA:small, Steel:small and large)

HEA has small size He clusters(Binding energy in V-containing materials goes down with the increase of He atoms). At least this is good for the mechanical properties.

 

Flyura:

DDL for annual report 12th December, template (what information we are looking for?)  Set next month in another February.

 

There are minutes attached to this event. Show them.
    • 14:00 → 14:20
      The diffusion of helium in tungsten-based refractory alloys by molecular dynamics 20m
      Speaker: Dr Guanying Wei (VTT)
      HeRHEA-Guanying-11.14.pptx
    • 14:20 → 14:40
      Experimental HEA activities at CEMHTI 20m
      Speaker: Marie-France Barthe (CEA)
    • 14:40 → 15:00
      Presentation from VTT 20m
      Speaker: Dr Tomi Suhonen (VTT)
    • 15:00 → 15:20
      In situ TEM with He implantation of HEA at IJClab 20m
      Speaker: Aurelie Gentils (CEA [CNRS])
      IJCLab_HerHEA_14-11-2024.pptx
    • 15:20 → 15:40
      He irradiation of HEA at HAL 20m
      Speaker: Zhehao Chen (VTT)
    • 15:40 → 16:00
      Overview of HerHEA project 20m

      I will remind of the goals and milestones of the project, emphasizing the priorities.

      Speaker: Flyura Djurabekova (VTT)
    • 16:00 → 17:00
      Discussion

      summary, discuss and work plan for next satge.

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