... containing Zr, Ba, and Th; U, Ba, and Mn; and Sc, Ba, and Y displayed a continuous decrease in corrosion rate with time Those containing Th, Ba, Mn, and Yb or Th, Ba, Zn, and Yb displayed a minimum ... Engineering Materials, Trans Tech Pub.: Switzerland, 1994; Vol 94–95, 181–208 6.43 Oda, K.; Yoshio, T Properties of Y2O3–Al2O3–SiO2 glasses as a model system of grain boundary phase of Si3N4 ceramics: Part ... silicate glasses by aqueous hydrofluoric acid in detail and related it to Copyright © 2004 by Marcel Dekker, Inc Corrosion of Specific Glassy Materials 267 the structure of silica glasses The silicon-oxygen...