Molten salt intrusion in graphite (IMAGE) DOE/Oak Ridge National Laboratory Caption Molten salt intrusion in graphite varied across graphite grades. In medium-fine graphite, which has larger pores than superfine graphite, salt penetrated deeper into the material. Credit Yuxuan Zhang, Nidia Gallego, Jisue Moon/ORNL, U.S. Dept. of Energy Usage Restrictions None License Original content 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.