Journal ArticleDOI
The System SiO2–P2O5
T. Y. Tien,F. A. Hummel +1 more
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In this paper, phase relations in the binary system between SiO2-P2O5 and SiO 2 were investigated by the quenching method using sealed platinum tubes to prevent the loss of P 2O5.Abstract:
Phase relations in the binary system between SiO2-P2O5 and SiO2 were investigated by the quenching method using sealed platinum tubes to prevent the loss of P2O5. The compound Si02-P2O5 exists in two forms, the low-temperature β form inverting sluggishly but reversibly to the high-temperature β form at 1030°C. The β form melts congruently at 1290°C. The compound 2SiO2-P2O5 melts incongruently at 1120°C to a silica-rich liquid and SiOa-P2O5. In the region between 5 and 25 mole % PO2, reactions were so sluggish that no data could be obtained by quenching.read more
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Relationships between silicate melt structure and petrologic processes
TL;DR: In this paper, the structure and property data for silicate melts at 1 bar in unary, ternary, quaternary and complex natural compositions have been reviewed, and the data are consistent with an anionic structure of depolymerized (NBO/T>0) melts that can be described in terms of a small number of stoichiometrically simple anionic units.
Journal ArticleDOI
The role of P2O5 in silicate melts
F. J. Ryerson,Paul C. Hess +1 more
TL;DR: In this paper, phase equilibria data in the systems SiO2-P2O5, P2O-5-M(x)O(y), and P 2O5-m O(y)-SiO2 are employed in conjunction with chromatographic and spectral data to investigate the role of P2 O5 in silicate melts.
Journal ArticleDOI
The nature of phase separation in binary oxide melts and glasses. I. Silicate systems
Pierre Hudon,Don R. Baker +1 more
TL;DR: In this paper, an exhaustive review of compositional and thermal extents of miscibility gaps in 41 binary silicate systems permits identification of three groups of cations exhibiting different immiscibility behaviours.
Journal ArticleDOI
Materials for optical fiber lasers: A review
TL;DR: The relevance of the material in high power fiber laser technologies is reviewed, and where appropriate, materials-based paths to the enhancement of laser performance will be underscored.
Journal ArticleDOI
Oxide solution mechanisms in silicate melts: Systematic variations in the activity coefficient of SiO2
TL;DR: In this article, phase equilibria and spectroscopic data are used to develop a simple model for the interaction of various oxide components and molten SiO 2, which is manifested by an increase in positive deviations from ideality with increasing cation field strength in M x O y -SiO 2 systems.
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