Materials properties characterization in the most extreme environments
There is an ever-increasing need for material systems to operate in the most extreme
environments encountered in space exploration, energy production, and propulsion …
environments encountered in space exploration, energy production, and propulsion …
Thermochemistry and phase stability of the polymorphs of yttrium tantalate, YTaO4
Thermodynamic parameters of the three fergusonite-related polymorphs M', M and T of
YTaO 4 and their phase stabilities were investigated experimentally. The debate on the …
YTaO 4 and their phase stabilities were investigated experimentally. The debate on the …
Energetics of reactions between ceramic coating materials and their binary oxide components with silicate melts
This paper summarizes our previous and current studies of using high‐temperature
calorimetry to investigate the energetics of reactions of ceramic coating materials (eg, yttrium …
calorimetry to investigate the energetics of reactions of ceramic coating materials (eg, yttrium …
Melting temperature prediction via first principles and deep learning
QJ Hong - Computational Materials Science, 2022 - Elsevier
Melting is a high temperature process that requires extensive sampling of configuration
space, thus making melting temperature prediction computationally very expensive and …
space, thus making melting temperature prediction computationally very expensive and …
Measurements of density of liquid oxides with an aero-acoustic levitator
Densities of liquid oxide melts with melting temperatures above 2000° C are required to
establish mixing models in the liquid state for thermodynamic modeling and advanced …
establish mixing models in the liquid state for thermodynamic modeling and advanced …
Integrating computational and experimental thermodynamics of refractory materials at high temperature
We develop new computational and experimental methods to determine materials
properties at high temperature, such as melting temperature, heat of fusion, heat capacity …
properties at high temperature, such as melting temperature, heat of fusion, heat capacity …
Thermal Expansion and Enthalpies of Phase Transformation and Fusion of Er2O3 and Tm2O3 from Experiment and Computation
SV Ushakov, QJ Hong, A Pavlik III… - Chemistry of …, 2024 - ACS Publications
Erbium and thulium sesquioxides are the only lanthanide oxides that exhibit premelting
cubic-hexagonal (C–H) phase transformation. The enthalpies of phase transitions and …
cubic-hexagonal (C–H) phase transformation. The enthalpies of phase transitions and …
Self-Organized Nanocomposite Structure Controlled by Elemental Site Occupancy to Improve Vortex Pinning in YBa2Cu3O7 Superconducting Films
T Horide, Y Yoshida, R Kita, M Gondo… - ACS Applied …, 2022 - ACS Publications
To fabricate high performance YBa2Cu3O7 superconducting films and tapes, the critical
current density (J c) should be enhanced and the nanocomposite structure should be very …
current density (J c) should be enhanced and the nanocomposite structure should be very …
A melting temperature database and a neural network model for melting temperature prediction
QJ Hong - arXiv preprint arXiv:2110.10748, 2021 - arxiv.org
I build a melting temperature database that contains approximately 10,000 materials. Based
on the database, I build a machine learning model that predicts melting temperature in …
on the database, I build a machine learning model that predicts melting temperature in …
Phase transformations in oxides above 2000 C: experimental technique development
The oxidation of boride and carbide-based ultra-high-temperature ceramics is the primary
limiting factor for their use as aerodynamic surfaces. Understanding the behaviour of the …
limiting factor for their use as aerodynamic surfaces. Understanding the behaviour of the …