J. Korean Ceram. Soc. > Volume 52(2); 2015 > Article
 Journal of the Korean Ceramic Society 2015;52(2): 140. doi: https://doi.org/10.4191/kcers.2015.52.2.140
 Effect of Substituting B2O3 for P2O5 in Conductive Vanadate Glass Suyeon Choi, Jonghwan Kim, Jaeyeop Jung, Hyeonjoon Park, Bongki Ryu Department of Materials Science and Engineering, Pusan National University ABSTRACT In this study, we verified the relationship among the electrical conductivity, chemical durability, and structure of conductive vanadate glass in which $BO_3$ and $BO_4$ and $V^{4+}$ and $V^{5+}$ coexist simultaneously. We prepared samples of vanadium borophosphate glass with various compositions, given by $50V_2O_5-xB_2O_3-(50-x)P_2O_5$(x = 0 ~ 20 mol%) and $70V_2O_5-xB_2O_3-(70-x)P_2O_5$(x = 0 ~ 10 mol%), and analyzed the electrical conductivity, chemical durability, FT-IR spectroscopy, thermal properties, density, and molar volume. Substituting $B_2O_3$ for $P_2O_5$ was found to improve the electrical conductivity, chemical durability, and thermal properties. From these results, we can draw the following conclusions. First, the electrons shift from the electron rich $V^{4+}$ to the electron deficient $BO_3$ as the $B_2O_3$ content increases. Second, the improvement in chemical durability and thermal properties is attributed to an increase in cross-linked structures by changing from a $BO_3$ structure to a $BO_4$ structure. Key words: Glass, Electrical conductivity, Chemical durability, Structure
TOOLS
Full text via DOI
CrossRef TDM
E-Mail
Share:
METRICS
 3 Crossref
 4 Scopus
 1,700 View