Solubility of Zirconia in Soda‐borosilicate Glasses*

Abstract

Titanium Alloy Manufacturing Company for their helpful suggestions throughout the course of this work. They also wish to thank B. D. Bruce, ceramic engineering student the enamels. This investigation was financed by the Titanium Alloy Manufacturing Company of Niagara Falls, N. Y., and was conducted as a cooperative project in the Department of Ceramic Engineering under the auspices of the Engineering Experiment Station at the University of Illinois. ~~~~~~~~~o RNGINEERINC IJRBANA, ILLINOISType I1 enamels should dissolve a large quantity of 0pacifyin.g material during smelting, but at ,firing solubility so that the opacifier which has been dissolved will crystallize.The blue color of type I1 enamels is often caused by the presence of very fine particles. ABSTRACTThe solubility of zirconia at 1500" and at 2200°F. was determined for glasses containing NaZO, BzOa, A1208, and SiO,. The solubility at these same temperatures was also determined for glasses containing equal parts of boric oxide and silica and one or more of the following constituents in quantities of 10, 20, or 3070'0: ABSTRACT Phosphorus pentoxide, which was used first to improve the color of heavy flint glasses, was later recognized as a valuable constituent of optical glasses, and the excellent ultraviolet transmission and low softening points of phosphate glasses have been found recently. Glasses that have a high content of PSOS have poor chemical resistivity, but this drawback is largely overcome by the addition of alumina. A possible picture of the constitution of phosphate glasses is presented, and the effect of alumina is explained. Some of the properties of the phosphate glasses have been investigated and correlated with their chemical composition and structure.

The structural role of Zr within alkali borosilicate glasses for nuclear waste immobilisation

“…The compositional dependence on ZrO 2 solubility has been reported by various authors [10][11][12][13][14][15] and there appears to be an additive effect. The information can be presented as 4 principles: It has been shown that change in solubility of ZrO 2 varies in a fixed stoichiometry with the number of alkali ions in excess of that needed to charge compensate aluminium 1 [15,16].…”

ADM guidance-Ceramics: all-ceramic multilayer interfaces in dentistry

“…The chemical bonding principles between a veneer layer and a metal substrate have only a limited significance and transferability to the bonding mechanisms in veneered zirconia restorations. Early research on the interface between zirconia and borosilicate glasses showed a certain solubility of zirconia in the glass at elevated temperatures of 815 or 1200 • C [50]. It has also been shown that zirconia enters the glass network as six-or eight-coordinated network modifiers [51].…”

Composite reinforcement: Recent development of continuous glass fibers

“…For new D‐Glass fibers, both alkaline earth oxides and alumina have been introduced at the expense of SiO 2 or B 2 O 3 or both In turn, microscale phase separation of the traditional D‐glass has been suppressed during fiber drawing. In designing AR‐Glass compositions a common, key feature is that nearly all of Al 2 O 3 has been replaced by ZrO 2 …”

“…In designing AR-Glass compositions a common, key feature is that nearly all of Al 2 O 3 has been replaced by ZrO 2 . [9][10][11] Compositions of the above specific mixtures drive the changes of glass properties, such as density, viscosity, liquidus temperature, chemical durability, mechanical property, dielectric property, thermal property, etc. As an example, Figure 1 depicts the measured composition effects on T F and fiber Young's modulus, respectively, for E-Glass-based compositions.…”