Effect of B 2 O 3 on the melt structure and viscosity of CaO‐SiO 2 system

2021 ◽  
Author(s):  
Xiaobo Zhang ◽  
Chengjun Liu ◽  
Maofa Jiang
Keyword(s):  
Melt Structure

Melt structure in the system nepheline-diopside

1990 ◽  
Vol 95 (B10) ◽  
pp. 15745 ◽  
Author(s):  
Dan Sykes ◽  
Christopher M. Scarfe
Keyword(s):  
Melt Structure

scholarly journals Borate melt structure: Temperature‐dependent B–O bond lengths and coordination numbers from high‐energy X‐ray diffraction

2018 ◽  
Vol 101 (8) ◽  
pp. 3357-3371 ◽  
Author(s):  
Oliver L. G. Alderman ◽  
Chris J. Benmore ◽  
Alex Lin ◽  
Anthony Tamalonis ◽  
J. K. Richard Weber
Keyword(s):  
High Energy ◽  
X Ray Diffraction ◽  
Temperature Dependent ◽  
Melt Structure ◽  
X Ray ◽  
Coordination Numbers ◽  
Bond Lengths

In Situ Raman Spectroscopy and DFT Studies of the Li2GeO3 Melt Structure

2019 ◽  
Vol 58 (8) ◽  
pp. 5025-5030 ◽  
Author(s):  
Shujie Zhang ◽  
Songming Wan ◽  
Yu Zeng ◽  
Shengjie Jiang ◽  
Xiaoye Gong ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Dft Studies ◽  
Melt Structure ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman

Irreversible Adsorption of Polymer Melts

1996 ◽  
Vol 464 ◽  
Author(s):  
U. Sawhney ◽  
C.J. Durning ◽  
B. O'Shaughnessy ◽  
G.S. Smith ◽  
J. Majewski
Keyword(s):  
Room Temperature ◽  
Adsorbed Layer ◽  
Equilibrium Structure ◽  
Pmma Film ◽  
Irreversible Adsorption ◽  
Equilibrium Conditions ◽  
Melt Structure ◽  
Neutron Reflection ◽  
Reflection Data ◽  
Adsorbed Layers

ABSTRACTWe studied the equilibrium architecture of polymer layers strongly adsorbed from the melt. Immobilized layers of poly-(methyl methacrylate) (PMMA) were produced by the following method: 1) The polymer was spin-coated onto silanol bearing surfaces of single crystal and fused quartz, and annealed at melt conditions, 2) The annealed layer was quenched to room temperature (below the glass transition temperature) in order to “freeze in” the melt structure near the substrate, 3) Unbound material was leached away in good solvent (benzene) to leave a residual, strongly-adsorbed layer. The architecture of this layer was studied by neutron reflection. Data on dried adsorbed layers indicates a dense PMMA film whose thickness gradually increases with annealing time in the melt from a minimal value. Evidently, annealing gradually relaxes a rather flat non-equilibrium structure produced by spin-coating. The thicknesses, h, in a series of dry layers annealed long enough to achieve equilibrium conditions in the melt scale as h ∼ N1/2. Data on swollen layers suggest a dilute, extended layer, but the preliminary results cannot give a definitive confirmation of the brush structure predicted by Guiselin.11

Melting and melt structure at high pressures

1994 ◽  
Author(s):  
Ronald E. Cohen ◽  
Z. Gong
Keyword(s):  
High Pressures ◽  
Melt Structure

High Temperature X-Ray Diffraction Study of Melt Structure of Silicon

1995 ◽  
Vol 34 (Part 1, No. 8A) ◽  
pp. 4124-4128 ◽  
Author(s):  
Yoshio Waseda ◽  
Kozo Shinoda ◽  
Kazumasa Sugiyama ◽  
Susumu Takeda ◽  
KazutakaTerashima ◽  
...  
Keyword(s):  
High Temperature ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
Melt Structure ◽  
X Ray

Effect of Heating Temperature on Microstructure of Directionally Solidified Ni-43Ti-7Al Alloy

2017 ◽  
Vol 898 ◽  
pp. 552-560 ◽  
Author(s):  
Lei Zhou ◽  
Li Jing Zheng ◽  
Hu Zhang
Keyword(s):  
Volume Fraction ◽  
Heating Temperature ◽  
Thermal Gradients ◽  
Directionally Solidified ◽  
Melt Structure ◽  
Cast Sample ◽  
The Stability ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Liquid Metal Cooling

By liquid metal cooling (LMC) process, the Ni-43Ti-7Al (at.%) alloy has been directionally solidified (DS) at different heating temperatures (1450°C, 1550°C, 1650°C) and a constant withdrawal rate of 100μm/s. The results showed that anomalous eutectic structures which consisted of Ti2Ni and TiNi phases were formed at the grain boundaries of as-cast sample and similar structures were also observed in the intercellular regions of DS samples. However, the microstructure changed from the equiaxial structure to the cellular structure due to the axial thermal gradients imposed. After DS, the NiTi and Ti2Ni phases preferentially grew along certain orientation, but the preferred crystallographic orientations of them changed as the heating temperature increased to 1650°C, which might be related to the change of melt structure. As expected, the volume fraction of Ti2Ni increased from 3.3% to 5.2% and the cellular spacing decreased from 47.8μm to 27.0μm as heating temperature increased. In addition, the stability of solid/liquid interface decreased, resulting from the coupling effects of G and ΔT- with the heating temperature increasing.

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