Multiple scattering effect of spherical LaPO4 enhanced broadband emissivity for heat dissipation of electronic devices

IF 10 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Today Physics Pub Date : 2024-11-06 DOI:10.1016/j.mtphys.2024.101584

Chuanqing Sun , Mingrui Liu , Wei Song , Chenxi Bao , Wanting Zhu , Wenyu Zhao , Qingjie Zhang

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Abstract

High-performance infrared radiation materials with excellent broadband emissivity, remarkable thermal stability, and scalable fabrication processes play a vital role in heat dissipation and energy-saving applications. However, current strategies of broadband emissivity enhancement remain inadequate. This study investigates the impact of LaPO₄ morphology on the infrared radiation properties of composite coating. Three distinct morphologies (sphere, rod and mesh sheet) of LaPO₄ are explored using a simulation-aided method. The composite coating filled with large-sized spherical LaPO₄ particles with low diffuse reflection, exhibits a significantly enhanced infrared radiation capability, resulting in a broadband emissivity of 95.6 %. Furthermore, the composite coating achieves a large temperature reduction of 6.2 °C and high cooling efficiency of 11.9 % when subjected to a heating power of 2250 W/m². This work provides an innovative strategy for regulating material emissivity through morphology control, benefiting advancements low-cost radiation heat transfer technology.

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球形 LaPO4 的多重散射效应增强了电子设备散热的宽带发射率

高性能红外辐射材料具有出色的宽带发射率、显著的热稳定性和可扩展的制造工艺，在散热和节能应用中发挥着重要作用。然而，目前的宽带发射率增强策略仍显不足。本研究探讨了 LaPO4 形态对复合涂层红外辐射特性的影响。采用模拟辅助方法探讨了 LaPO4 的三种不同形态（球状、棒状和网状片状）。填充了大尺寸球形低漫反射 LaPO4 颗粒的复合涂层的红外辐射能力显著增强，宽带发射率达到 95.6%。此外，当加热功率为 2250 W/m2 时，复合涂层的温度大幅降低了 6.2 °C，冷却效率高达 11.9%。这项工作提供了一种通过形态控制调节材料发射率的创新策略，有利于低成本辐射传热技术的发展。

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来源期刊

Materials Today Physics Materials Science-General Materials Science

CiteScore

14.00

自引率

7.80%

发文量

284

审稿时长

15 days

期刊介绍： Materials Today Physics is a multi-disciplinary journal focused on the physics of materials, encompassing both the physical properties and materials synthesis. Operating at the interface of physics and materials science, this journal covers one of the largest and most dynamic fields within physical science. The forefront research in materials physics is driving advancements in new materials, uncovering new physics, and fostering novel applications at an unprecedented pace.