| AVS 62nd International Symposium & Exhibition | |
| Advanced Surface Engineering | Tuesday Sessions |
| Session SE-TuP |
| Session: | Advanced Surface Engineering Poster Session |
| Presenter: | Gustavo Martinez, University of Texas at El Paso |
| Authors: | G. Martinez, University of Texas at El Paso J. Chessa, University of Texas at El Paso M. Lerche, Mcclellan Nuclear Research Center R.V. Chintalapalle, University of Texas at El Paso |
| Correspondent: | Click to Email |
Material failure is one of the most considerable setbacks needed to be addressed by the materials research community to develop the next generation of nuclear energy systems that demand materials to serve under extreme conditions. We report on the enhanced irradiation tolerance and phase stability of nanocrystalline Tungsten-Yttrium (W-Y) coatings produced by radio-frequency sputter deposition. The W-Y coatings were produced under variable sputtering pressure and Y-content. The coatings were characterized by studying their structure and mechanical properties. The W-Y coatings were then subjected to heavy ion-irradiation at high fluence levels. The addition of Y atoms into the W matrix has shown to improve the irradiation bombardment of heavy Au+3 and yielding improved young’s modulus and hardness when compared to pure W alone. It is believed that the addition of Y creates grain boundaries that are capturing interstitial ions and recombining to eliminate vacancies. The results will be presented and discussed.