Preparation and Thermal Properties of LaPO<sub>4</sub> Ceramics

Dong, Honggang; Chen, Xiao; Li, Jianguo; Jia, Pengwei; Shuang, Yingchai; Sun, Qinghong; Ma, Wen

doi:10.1088/1757-899x/678/1/012079

Cited by 4 publications

(1 citation statement)

References 10 publications

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“…In addition to its mineralogical interest, monazite has also caught the attention of scientists due to its abundance of potential technological applications like nuclear waste management, catalysis, and optical devices [3,4]. Moreover, it is one of the candidates for ceramic thermal barrier coatings (TBCs), which are used in gas turbine engines [5].…”

Section: Introductionmentioning

confidence: 99%

The behaviour of Monazite-(La) at high pressure: a first principles study

Motsomone,

Diale,

Ngoepe

et al. 2023

MATEC Web Conf.

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Monazite-(La) has received significant attention due to its interesting physical and chemical properties, such as its high fusion temperature and low solubility. It is useful for applications such as lusting, temperature coating, and proton conduction. The density functional theory (DFT) calculations were carried out to investigate the effect of pressure on the structural and thermodynamic properties of Monazite-La from 0 to 60 GPa. Lattice parameters at zero pressure were found to be in good agreement with experimental studies. Furthermore, the thermodynamic properties predicted that the stability of LaPO4 increased with an increase in pressure. The findings provide a deeper understanding of the structural and thermodynamic properties of Monazite-La under pressure.

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Section: Introductionmentioning

confidence: 99%

The behaviour of Monazite-(La) at high pressure: a first principles study

Motsomone,

Diale,

Ngoepe

et al. 2023

MATEC Web Conf.

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Investigation of phase equilibria in SrO–La2O3–P2O5 system and thermo physical properties of established compounds

Keskar

Patkare

Shafeeq

et al. 2022

Journal of Solid State Chemistry

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First-principles characterization of thermal conductivity in LaPO4 -based alloys

Pazhedath,

Bastonero,

Marzari

et al. 2024

Phys. Rev. Applied

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Alloys based on lanthanum phosphate (LaPO4) are often employed as thermal barrier coatings, due to their low thermal conductivity and structural stability over a wide temperature range. To enhance the thermal-insulation performance of these alloys, it is essential to comprehensively understand the fundamental physics governing their heat conduction. Here, we employ the Wigner formulation of thermal transport in conjunction with first-principles calculations to elucidate how the interplay between anharmonicity and compositional disorder determines the thermal properties of La1−xGdxPO4 alloys, and discuss the fundamental physics underlying the emergence and coexistence of particlelike and wavelike heat-transport mechanisms. We also show how the Wigner transport equation correctly describes the thermodynamic limit of a compositionally disordered crystal, while the Boltzmann transport equation does not. Our predictions for microscopic vibrational properties (temperature-dependent Raman spectrum) and for macroscopic thermal conductivity are validated against experiments. Finally, we leverage these findings to devise strategies to optimize the performance of thermal barrier coatings. Published by the American Physical Society 2024

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Preparation and Thermal Properties of LaPO₄ Ceramics

Cited by 4 publications

References 10 publications

The behaviour of Monazite-(La) at high pressure: a first principles study

The behaviour of Monazite-(La) at high pressure: a first principles study

Investigation of phase equilibria in SrO–La2O3–P2O5 system and thermo physical properties of established compounds

First-principles characterization of thermal conductivity in LaPO4 -based alloys

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Preparation and Thermal Properties of LaPO4 Ceramics

Cited by 4 publications

References 10 publications

The behaviour of Monazite-(La) at high pressure: a first principles study

The behaviour of Monazite-(La) at high pressure: a first principles study

Investigation of phase equilibria in SrO–La2O3–P2O5 system and thermo physical properties of established compounds

First-principles characterization of thermal conductivity in LaPO4 -based alloys

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Product

Resources

About

Preparation and Thermal Properties of LaPO₄ Ceramics