Corrosion behavior of highly-crystallizable BaO-Nd2O3-TiO2-B2O3 glass-based composites

► First systematic report on acid corrosion behavior of highly-crystallizable glass composites. ► Comparative report on different corrosion behaviors between Al2O3 and BaTiO3 fillers. ► Involvement of crystalline phase in corrosion, with the residual glass after crystallization. ► Preferential leaching of crystallized borates over titanates is evidently observed. ► Highly extensive corrosion, with higher levels of leaching in HCl than H2SO4.