Ion exchange of LiNO3 molten salt into Na2O-ZrO2-P2O5-SiO2 glass ceramics was successfully performed in order to obtain Li-exchanged Na+ superionic conductor (NASICON) -type glass ceramics. This procedure was carried out to stabilize the Li-ion-exchanged NASICON-type crystals in a system composed of Li2O-ZrO2-P2O5-SiO2. The total conductivity of the prepared system increased as the X value in the 20Li(2)O-XZrO2-15P(2)O(5)-(65-X) SiO2 system increased, reaching a maximum conductivity value of 3.0 (+/- 2.0) x 10(-4) S/cm (X = 30). The conductivity was affected by the existence of the Li3PO4 phase, which was present in the Li-exchanged glass ceramics. (C) 2013 Elsevier B.V. All rights reserved.