储能科学与技术2026，Vol.15Issue(6)：2058-2067,10.DOI:10.19799/j.cnki.2095-4239.2025.1091
纳米颗粒对Sn-Bi-Zn储热合金显微组织及热物理性能的影响
Effect of nanoparticles on microstructure and thermophysical properties of Sn-Bi-Zn heat storage alloys
摘要
Abstract
Specific heat capacity plays a crucial role in the heat transfer efficiency of materials.This study focuses on exploring the effects of second-phase nano samarium oxide,nano tungsten carbide,and nano nickel particles with densities similar to that of the alloy matrix on the microstructure and thermophysical properties of the alloy matrix.The phase composition and microstructure of the alloy were characterized using methods such as X-ray diffraction phase analysis,electron probe microanalysis,and X-ray fluorescence spectroscopy.The thermal and physical properties of the alloy were comprehensively analyzed using differential scanning calorimetry and laser flash analysis.The results indicate that the addition of second-phase nanoparticles changes the morphology of the eutectic phase and induces the formation of ultrafine grains in the composite alloy,altering the contribution ratio of electron and phonon heat transfer in the alloy.In the liquid state,an ordered structure is formed between the second-phase solid nanoparticles and the molten metal.As the temperature increases,breaking these ordered structures requires additional heat absorption,which increases the specific heat capacity.关键词
纳米颗粒/Sn-Bi-Zn储热合金/比热容增强/储热系统Key words
nanoparticles/Sn-Bi-Zn thermal storage alloy/enhanced specific heat capacity/thermal storage system分类
能源科技引用本文复制引用
王青萌,程晓敏,王秀丽,程千驹,杨怡..纳米颗粒对Sn-Bi-Zn储热合金显微组织及热物理性能的影响[J].储能科学与技术,2026,15(6):2058-2067,10.基金项目
湖北省自然科学基金项目(2025AFD355) （2025AFD355）
湖北省揭榜制科技项目(2025BEB064). （2025BEB064）
