Pressure and temperature dependence of the viscosity of a NaAlSi2O6 melt

Akio Suzuki; Eiji Ohtani; Hidenori Terasaki; Keisuke Nishida; Hiromi Hayashi; Tatsuya Sakamaki; Yuki Shibazaki; Takumi Kikegawa

doi:10.1007/s00269-010-0381-4

Pressure and temperature dependence of the viscosity of a NaAlSi₂O₆ melt

Akio Suzuki, Eiji Ohtani, Hidenori Terasaki, Keisuke Nishida, Hiromi Hayashi, Tatsuya Sakamaki, Yuki Shibazaki, Takumi Kikegawa

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

The viscosity of a silicate melt of composition NaAlSi₂O₆ was measured at pressures from 1.6 to 5.5 GPa and at temperatures from 1,350 to 1,880°C. We employed in situ falling sphere viscometry using X-ray radiography. We found that the viscosity of the NaAlSi₂O₆ melt decreased with increasing pressure up to 2 GPa. The pressure dependence of viscosity is diminished above 2 GPa. By using the relationship between the logarithm of viscosity and the reciprocal temperature, the activation energies for viscous flow were calculated to be 3.7 ± 0.4 × 10² and 3.7 ± 0.5 × 10² kJ/mol at 2.2 and 2.9 GPa, respectively.

Original language	English
Pages (from-to)	59-64
Number of pages	6
Journal	Physics and Chemistry of Minerals
Volume	38
Issue number	1
DOIs	https://doi.org/10.1007/s00269-010-0381-4
Publication status	Published - Jan 2011
Externally published	Yes

Keywords

High pressure
Radiography
Silicate melt
Viscosity

ASJC Scopus subject areas

Materials Science(all)
Geochemistry and Petrology

Access to Document

10.1007/s00269-010-0381-4

Cite this

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title = "Pressure and temperature dependence of the viscosity of a NaAlSi2O6 melt",

abstract = "The viscosity of a silicate melt of composition NaAlSi2O6 was measured at pressures from 1.6 to 5.5 GPa and at temperatures from 1,350 to 1,880°C. We employed in situ falling sphere viscometry using X-ray radiography. We found that the viscosity of the NaAlSi2O6 melt decreased with increasing pressure up to 2 GPa. The pressure dependence of viscosity is diminished above 2 GPa. By using the relationship between the logarithm of viscosity and the reciprocal temperature, the activation energies for viscous flow were calculated to be 3.7 ± 0.4 × 102 and 3.7 ± 0.5 × 102 kJ/mol at 2.2 and 2.9 GPa, respectively.",

keywords = "High pressure, Radiography, Silicate melt, Viscosity",

author = "Akio Suzuki and Eiji Ohtani and Hidenori Terasaki and Keisuke Nishida and Hiromi Hayashi and Tatsuya Sakamaki and Yuki Shibazaki and Takumi Kikegawa",

note = "Funding Information: The authors thank Dr. Ken-ichi Funakoshi at SPrign-8 for technical supports. The synchrotron radiation experiments were conducted at the Photon Factory, KEK (Proposal No. 2007S2–002). This work was partially supported by Grant-in-Aid for scientific research from the Japanese Ministry of Education, Culture, Sports, Science and Technology to A.S. (No. 17654102, 21684032 and 20103003) and to E.O. (No. 16075202 and 18104009).",

year = "2011",

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doi = "10.1007/s00269-010-0381-4",

language = "English",

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pages = "59--64",

journal = "Physics and Chemistry of Minerals",

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T1 - Pressure and temperature dependence of the viscosity of a NaAlSi2O6 melt

AU - Suzuki, Akio

AU - Ohtani, Eiji

AU - Terasaki, Hidenori

AU - Nishida, Keisuke

AU - Hayashi, Hiromi

AU - Sakamaki, Tatsuya

AU - Shibazaki, Yuki

AU - Kikegawa, Takumi

N1 - Funding Information: The authors thank Dr. Ken-ichi Funakoshi at SPrign-8 for technical supports. The synchrotron radiation experiments were conducted at the Photon Factory, KEK (Proposal No. 2007S2–002). This work was partially supported by Grant-in-Aid for scientific research from the Japanese Ministry of Education, Culture, Sports, Science and Technology to A.S. (No. 17654102, 21684032 and 20103003) and to E.O. (No. 16075202 and 18104009).

PY - 2011/1

Y1 - 2011/1

N2 - The viscosity of a silicate melt of composition NaAlSi2O6 was measured at pressures from 1.6 to 5.5 GPa and at temperatures from 1,350 to 1,880°C. We employed in situ falling sphere viscometry using X-ray radiography. We found that the viscosity of the NaAlSi2O6 melt decreased with increasing pressure up to 2 GPa. The pressure dependence of viscosity is diminished above 2 GPa. By using the relationship between the logarithm of viscosity and the reciprocal temperature, the activation energies for viscous flow were calculated to be 3.7 ± 0.4 × 102 and 3.7 ± 0.5 × 102 kJ/mol at 2.2 and 2.9 GPa, respectively.

AB - The viscosity of a silicate melt of composition NaAlSi2O6 was measured at pressures from 1.6 to 5.5 GPa and at temperatures from 1,350 to 1,880°C. We employed in situ falling sphere viscometry using X-ray radiography. We found that the viscosity of the NaAlSi2O6 melt decreased with increasing pressure up to 2 GPa. The pressure dependence of viscosity is diminished above 2 GPa. By using the relationship between the logarithm of viscosity and the reciprocal temperature, the activation energies for viscous flow were calculated to be 3.7 ± 0.4 × 102 and 3.7 ± 0.5 × 102 kJ/mol at 2.2 and 2.9 GPa, respectively.

KW - High pressure

KW - Radiography

KW - Silicate melt

KW - Viscosity

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