Grain boundary matter surfaces within polycrystals act as pathways for diffusion and corrosion
https://www.dnb.com/business-directory/company-profiles/matter-surfaces-llc.c90c76c5b8c5bd09c3be1be2960c7e0e
Grain boundary matter surfaces within polycrystals act as pathways for diffusion and corrosion, influencing mechanical strength and failure modes.