摘要
金属相变材料在提升能源利用效率和节能减排方面具有广阔的应用前景。本研究通过采用脉冲微孔喷射法(pulsated orifice ejection method,POEM)成功合成A30、H30、A50、H50合金粒子作为高温储热的金属相变材料。结果表明:POEM制备的粒子呈单分散状态,具有高球形度、高纯度,表面光滑致密以及均匀的粒径分布等特点。此外,这些粒子表现出优异的热稳定性和高潜热值。其中,A30、H30、A50、H50粒子的熔化潜热为347.54、359.67、262.63、284.82 J/g,而相应的凝固潜热为366.24、377.50、256.82、296.47 J/g。经历多次热循环后,这些粒子仍能保持较高的能量储存密度和较好的结构稳定性。通过POEM制备的Al-Si合金粒子在相变储能领域具有显著的应用潜力,为开发新型高效储能材料提供了重要依据。
Metal phase-change materials(PCMs)show great potential in improving energy efficiency and conservation.In this study,A30,H30,A50 and H50 alloy particles are successfully synthesized using the pulsated orifice ejection method(POEM)as high-temperature thermal storage PCMs.The results show that the POEM-fabricated particles exhibit mono-sized,high sphericity,high purity,smooth and dense surfaces,and uniform particle size distribution.Moreover,thermal performance analysis reveals that these particles possess excellent thermal stability and high latent heat values.The melting latent heats of A30,H30,A50 and H50 particles are 347.54,359.67,262.63,284.82 J/g,respectively,with corresponding solidification latent heats of 366.24,377.50,256.82,296.47 J/g.After multiple thermal cycles,these particles maintain high energy storage density and good structural stability.Al-Si alloy particles prepared via POEM demonstrate significant application potential in the field of phase-change energy storage,providing important evidence for the development of novel and high-efficiency energy storage materials.
作者
连云秀
许富民
董伟
LIAN Yunxiu;XU Fumin;DONG Wei(School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China)
出处
《材料工程》
北大核心
2025年第6期145-153,共9页
Journal of Materials Engineering
基金
国家自然科学基金项目(51571050)。
