Plasma-Facing Component Innovations by Advanced Manufacturing and Design

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Oak Ridge, Tennessee
Project Term:
01/11/2021 - 07/31/2024

Technology Description:

Robust, affordable, and durable plasma-facing components (PFCs) are key to commercial fusion energy. PFCs must maintain the capability to handle the extreme heat, high-density plasma, high-energy neutrons, and fuel cycling in safe and economical operation. So far, a solution does not exist. Solid PFCs with a tungsten (W) armor, helium (He) cooling, and reduced-activation steel structure may satisfy the demanding requirements. This ORNL-led team will use laser powder-bed-fusion and electron-beam melting to create high-quality, W alloys (crack-free, high-density with acceptable properties) as the armor and reduced-activation, ferritic/martensitic steels as the base structure, with compositionally graded interlayers. They will use computational alloy design to integrate the materials with additive manufacturing. A high-quality integrated structure will promote cost-effective PFC designs for a range of fusion-energy concepts, with unprecedented flexibility for performance and reliability.

Potential Impact:

Successful development of fusion energy science and technology could lead to a safe, carbon-free, abundant energy source for developed and emerging economies.


The GAMOW program will advance American leadership in fusion energy science and technology.


If successfully developed and commercialized, fusion energy can provide abundant, zero-carbon energy.


Advances in GAMOW’s technical areas will help accelerate progress toward commercial fusion energy and a new zero-carbon energy economy.


ARPA-E Program Director:
Dr. Ahmed Diallo
Project Contact:
Dr. Yutai Katoh
Press and General Inquiries Email:
Project Contact Email:


University of Tennessee
Texas A&M University
Pacific Northwest National Laboratory
University of California, Los Angeles
Lawrence Livermore National Laboratory
Georgia Tech Research Corporation
Sandia National Laboratory

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