Diffusion mechanism and dependence of diffusion on sodium silicate compositions Nguyen Thi Thanh Ha, Nguyen Thi Trang, Hoang Viet Hung, Tran Thuy Duong and Pham Khac Hung Eur. Phys. J. B, 93 7 (2020) 141 Published online: 27 July 2020 DOI: 10.1140/epjb/e2020-10116-4