Laser stimulated grain growth in 304 stainless steel anodes for reduced hydrogen outgassing

@inproceedings{Gortat2017LaserSG,
  title={Laser stimulated grain growth in 304 stainless steel anodes for reduced hydrogen outgassing},
  author={Daniel Gortat and Martin Sparkes and Steven B. Fairchild and P. Terrence Murray and Marc Cahay and Tyson C. Back and Gregg Gruen and Nathaniel P. Lockwood and William O'Neill},
  booktitle={LASE},
  year={2017}
}
Metal anodes in high power microwave (HPM) devices erode during operation due to hydrogen outgassing and plasma formation; both of which are thermally driven phenomena generated by the electron beam impacting the anode’s surface. This limits the lowest achievable pressure in an HPM device, which reduces its efficiency. Laser surface melting the 304 stainless steel anodes by a continuous wave fiber laser showed a reduction in hydrogen outgassing by a factor of ~4 under 50 keV electron… Expand

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