Search Results - "Richet, P."

Effects of the Iron Content and Redox State on the Structure of Sodium Borosilicate Glasses: A Raman, Mössbauer and Boron K-Edge XANES Spectroscopy Study by Cochain, B., Neuville, D. R., Henderson, G. S., McCammon, C. A., Pinet, O., Richet, P.

“…The structure of iron‐bearing sodium borosilicate glasses with up to 10 mol% “FeO” has been investigated in the range 0.15 < Fe3+/ΣFe < 0.95. According to…”
Get full text

Densities and volumes of hydrous silicate melts: New measurements and predictions by Bouhifd, M.A., Whittington, A.G., Richet, P.

“…The equilibrium molar volumes of four series of anhydrous and hydrous aluminosilicate glasses and liquids (0 to 11mol% H2O) were determined at 1bar between 300…”
Get full text

Kinetics and mechanisms of iron redox reactions in silicate melts: The effects of temperature and alkali cations by Magnien, V., Neuville, D.R., Cormier, L., Roux, J., Hazemann, J.-L., de Ligny, D., Pascarelli, S., Vickridge, I., Pinet, O., Richet, P.

“…The kinetics and the mechanisms of iron redox reactions in molten Fe-bearing pyroxene compositions have been investigated by Raman spectroscopy and X-ray…”
Get full text

High-temperature thermal expansion of lime, periclase, corundum and spinel by Fiquet, G., Richet, P., Montagnac, G.

“…The high-temperature cell parameters of lime (CaO), periclase (MgO), corundum (Al2O3), and spinel (MgAl2O4) have been determined from 300 up to 3000 K through…”
Get full text

Heat capacities of hydrous silicate glasses and liquids by Bouhifd, M.A., Whittington, A.G., Withers, A.C., Richet, P.

“…Differential scanning calorimetry measurements made at atmospheric pressure from 300K to about 100K above the glass transition temperature (Tg) are reported…”
Get full text

Thermochemistry and melting properties of basalt by Bouhifd, M. A., Besson, P., Courtial, P., Gérardin, C., Navrotsky, A., Richet, P.

“…The heat capacities of the liquid, glassy and crystalline phases of an alkali basalt have been determined from relative enthalpies measured between 400 and…”
Get full text

Kinetics of iron redox reactions in silicate liquids: A high-temperature X-ray absorption and Raman spectroscopy study by Magnien, V., Neuville, D.R., Cormier, L., Roux, J., Hazemann, J.-L., Pinet, O., Richet, P.

“…The oxidation kinetics of a Fe-bearing supercooled liquid of the system SiO2–CaO–MgO–Na2O–FeO has been determined near the glass transition range by X-ray…”
Get full text

Dynamics of iron-bearing borosilicate melts: Effects of melt structure and composition on viscosity, electrical conductivity and kinetics of redox reactions by Cochain, B., Neuville, D.R., de Ligny, D., Malki, M., Testemale, D., Pinet, O., Richet, P.

“…The dynamic properties of a series of iron-bearing sodium borosilicate melts have been investigated to determine how structure and composition control…”
Get full text

New high viscosity data for 3D network liquids and new correlations between old parameters by Sipp, A, Bottinga, Y, Richet, P

“…The Adam–Gibbs and the Vogel–Tamman–Fulcher equations are very often used to express the temperature dependence of the viscosity of liquids. Both equations…”
Get full text

Molecular dynamics simulations of vitreous silica structures by Takada, A., Richet, P., Catlow, C.R.A., Price, G.D.

“…Molecular dynamics simulations have been used to investigate the structural changes in cristobalite and silica glass at high temperatures. We used potentials…”
Get full text

Kinetics of iron oxidation in silicate melts: a preliminary XANES study by Magnien, V., Neuville, D.R., Cormier, L., Mysen, B.O., Briois, V., Belin, S., Pinet, O., Richet, P.

“…X-ray Absorption Near Edge Structure (XANES) experiments made between 600 and 700 °C at the Fe K-edge have been used to study the kinetics of iron oxidation in…”
Get full text

Molecular dynamics simulation of temperature-induced structural changes in cristobalite, coesite and amorphous silica by Takada, Akira, Richet, P., Catlow, C.R.A., Price, G.D.

“…Structural changes in cristobalite, coesite, and amorphous silica have been investigated from 100 to 3000K by molecular dynamics simulations. These have been…”
Get full text

Water as a Dense Icelike Component in Silicate Glasses by Richet, P., Polian, A.

“…Density and Brillouin-scattering measurements of hydrous andesite glasses at ambient conditions showed that dissolved water has a concentration-independent…”
Get full text

Entropy and structure of oxidized and reduced iron-bearing silicate glasses by Sipowska, J.T., Atake, T., Mysen, B.O., Richet, P.

“…The influence of ferrous and ferric iron on the low-temperature heat capacity and vibrational entropy of silicate glasses has been determined by adiabatic…”
Get full text

Molecular dynamics simulation of polymorphic and polyamorphic transitions in tetrahedral network glasses: BeF2 and GeO2 by TAKADA, A, RICHET, P, CATLOW, C. R. A, PRICE, G. D

“…It is well know that tetrahedral network glasses have anomalous properties such as a density maximum and bulk modulus minimum. The magnitudes of such anomalous…”
Get full text

Rheology of bubble-bearing magmas by Lejeune, A.M, Bottinga, Y, Trull, T.W, Richet, P

“…The physical effects of air or argon bubbles on the rheology of a calcium aluminosilicate melt have been measured at temperatures ranging from 830° to 960°C,…”
Get full text

Silicate melts: The “anomalous” pressure dependence of the viscosity by Bottinga, Y., Richet, P.

“…The decrease of the specific volume, when the extent of polymerization diminishes, is a cause of the pressure sensitivity of the viscosity of silicate melts…”
Get full text

High-temperature structure and dynamics of coesite (SiO2) from numerical simulations by Bourova, E., Richet, P., Parker, S. C.

“…The 1-bar structure and properties of the high-pressure SiO2 polymorph coesite have been simulated by lattice and molecular dynamics up to 1600 and 2100 K,…”
Get full text

Equilibrium density and expansivity of silicate melts in the glass transition range by Toplis, M. J., Richet, P.

“…Equilibrium volumes and expansivities of three liquids in the system anorthite (CaAl2Si2O8)--diopside (CaMgSi2O6) have been derived from dilatometric…”
Get full text

Crystallization of Highly Supercooled Silicate Melts by Roskosz, M., Toplis, M. J., Richet, P.

“…Crystallization of liquids in the system CaO‐MgO‐Al2O3‐SiO2 at one atmosphere has been studied at temperatures between the glass transition (Tg) and the…”
Get full text