A review of lithium application for the plasma-facing material in EAST Tokamak

Hu, Jiansheng; Li, L.; Zuo, Guizhong; Sun, Zhuo; Xu, Wenhai; Meng, X.C.; Li, C. L.; Tang, Zhu; Sun, Jia

doi:10.1007/s41614-023-00114-7

Cited by 3 publications

(2 citation statements)

References 85 publications

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“…Thus, it is necessary to correct the volumetric energy density of PW. The laser's volumetric energy density can be calculated using Equation (1) for CW mode and Equation (2) for PW mode.…”

Section: Sample Printing Processmentioning

confidence: 99%

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Microhardness and Tensile Strength Analysis of SS316L/CuCrZr Interface by Laser Powder Bed Fusion

Jin,

Hoo,

Jin

et al. 2024

Materials

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Metallic joints within tokamak devices necessitate high interface hardness and superior bonding properties. However, conventional manufacturing techniques, specifically the hot isostatic pressing (HIP) diffusion joining process, encounter challenges, including the degradation of the SS316L/CuCrZr interface and CuCrZr hardness. To address this, we explore the potential of laser powder bed fusion (LPBF) technology. To assess its viability, we fabricated 54 SS316L/CuCrZr samples and systematically investigated the impact of varied process parameters on the microhardness and tensile strength of the dissimilar metal interfaces. Through comprehensive analysis, integrating scanning electron microscopy (SEM) imagery, we elucidated the mechanisms underlying mechanical property alterations. Notably, within a laser volumetric energy density range of 60 J/mm3 to 90 J/mm3, we achieved elevated interface hardness (around 150 HV) and commendable bonding quality. Comparative analysis against traditional methods revealed a substantial enhancement of 30% to 40% in interface hardness with additive manufacturing, effectively mitigating CuCrZr hardness degradation.

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“…Thus, it is necessary to correct the volumetric energy density of PW. The laser's volumetric energy density can be calculated using Equation (1) for CW mode and Equation (2) for PW mode.…”

Section: Sample Printing Processmentioning

confidence: 99%

“…The tokamak device [ Figure 1 a,b] is a toroidal vessel based on the magnetic confinement principle, which is employed to realize controlled nuclear fusion [ 1 ]. The vacuum radiation shielding structure is of high research value as the core component of heat insulation and radiation protection.…”

Section: Introductionmentioning

confidence: 99%

Microhardness and Tensile Strength Analysis of SS316L/CuCrZr Interface by Laser Powder Bed Fusion

Jin,

Hoo,

Jin

et al. 2024

Materials

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Reviews of Modern Plasma Physics: Volume 7

Kikuchi

2024

Rev. Mod. Plasma Phys.

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Study of Ohmic breakdown and burnthrough phase of ADITYA tokamak

Patel,

Tanna,

Chowdhuri

et al. 2023

Physics of Plasmas

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In the ADITYA tokamak, the plasma discharge is initiated through filament pre-ionization assisted breakdown, using the conventional inductively driven electric field. Following the breakdown of the neutral gas, the discharge is sustained by a successful burnthrough phase. The nature of the breakdown and burnthrough phase is studied by varying the parameters influencing it, such as the toroidal electric field, operating pressure, and lithium wall conditioning. The plasma initiation failures in the breakdown and burnthrough phase are identified, and optimized conditions of operating parameters are derived. The value of the Lloyd parameter Eϕ×BT/Bz in the ADITYA for plasma breakdown is found to be in the range of 1200–2100 V/m, which is consistent with other conventional tokamaks. The applied Ohmic input power must overcome the power losses due to fuel ionization and fuel and impurity radiation to achieve the complete burnthrough. The power requirement for the burnthrough phase is obtained experimentally and compared with the estimated values. The required Ohmic input power is found to be ∼60 kW for the successful burnthrough. Furthermore, it has been observed that the vessel wall coating with lithium reduces the impurities influx in the burnthrough phase and, thus, reduces the Ohmic input power consumption.

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A review of lithium application for the plasma-facing material in EAST Tokamak

Cited by 3 publications

References 85 publications

Microhardness and Tensile Strength Analysis of SS316L/CuCrZr Interface by Laser Powder Bed Fusion

Microhardness and Tensile Strength Analysis of SS316L/CuCrZr Interface by Laser Powder Bed Fusion

Reviews of Modern Plasma Physics: Volume 7

Study of Ohmic breakdown and burnthrough phase of ADITYA tokamak

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