DOAJ Open Access 2025

Evaluation of a boron nitride–boron pebble aggregate material for renewable plasma-facing surfaces in magnetic fusion devices

Erick Martinez-Loran Daisuke Nishijima Marlene Patino Angelica Ottaviano Lucy Tang +3 lainnya

Abstrak

We demonstrate a new renewable boron aggregate material that can withstand heat loads of 40MWm-2 without cooling and featuring low sublimation of below 100Torr-L/s/m2 and sputtering yield of 0.04 from 40eV D, similar to solid boron. The retention of deuterium (D) is 3.2 × 1020D/m2, 200× less than solid boron, 100× less than carbon, and comparable to tungsten at similar fluence and energy. The material sheds under high heat loads, at a rate of 0.35cm/s, exposing the cool surface to the plasma, allowing heat removal and tritium extraction away from the plasma and eliminating the need for cooling channels. This recession rate can be compensated for, as the material can be extruded from a paste at a rate of 1cm/s.

Topik & Kata Kunci

Nuclear engineering. Atomic power

Penulis (8)

Erick Martinez-Loran

Daisuke Nishijima

Marlene Patino

Angelica Ottaviano

Lucy Tang

Santhosh Kumar

Jose Boedo

Eric Hollmann

Format Sitasi

APA MLA BibTeX

Martinez-Loran, E., Nishijima, D., Patino, M., Ottaviano, A., Tang, L., Kumar, S. et al. (2025). Evaluation of a boron nitride–boron pebble aggregate material for renewable plasma-facing surfaces in magnetic fusion devices. https://doi.org/10.1016/j.nme.2025.101962

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Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.1016/j.nme.2025.101962
Akses: Open Access ✓