Faceted Grain Boundary in Intergranularly-Fractured S-Doped Ni (image) University of California - San Diego Share Print E-Mail Caption This is a faceted grain boundary in intergranularly-fractured sulfur-doped nickel. Credit Jian Luo et al. Usage Restrictions Please credit: Jian Luo et al. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.