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Material scientists at Pacific Northwest National Laboratory are working with ductile-phase toughened and fiber-reinforced tungsten in an effort to develop materials that can function and survive under the high-heat flux environments of a fusion reactor. This image is a phase map (using Electron Backscatter Diffraction (EBSD) technique) of a fiber-reinforced tungsten matrix (red color phase). The initial reinforcing fiber was Chemical Vapor Deposition (CVD)-grown Silicon Carbide (SiC) on a core of carbon fiber (black phase). However, during consolidation of the Tungsten (W) and the SiC/Carbon (C) fiber, the SiC surrounding the carbon core reacted in-situ with W to form Tungsten Silicide (W5Si3) (green color phase) and Tungsten Carbide (W2C) (blue color phase). The goal is to develop armor materials that can handle extremely high heat flux inside a nuclear fusion reactor.

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Document Title: The Eye
Category: Science as Art
Media Type: Photos
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URL of this page: http://picturethis.pnl.gov/picturet.nsf/by+id/DRAE-9N8SF3

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