Heat release behavior of aluminum particles under pure nitrogen atmosphere

IF 3.1 2区化学 Q2 CHEMISTRY, ANALYTICAL

Thermochimica Acta Pub Date : 2025-04-26 DOI:10.1016/j.tca.2025.180014

Xueqin Liao , Binghong Chen , Qiaoyu Zhang , Zehao Li , Jianzhong Liu

引用次数: 0

Abstract

Herein, a thermal analysis system and a laser combustion diagnostic system were employed to comparatively investigate the reaction behavior differences of Al particles in N₂ and oxidizing atmospheres. The results show that Al particles have higher mass gain and heat release in N₂ compared to air and carbon dioxide at low heating rates. When the temperature is increased to 1000 °C, the reaction efficiency of Al in nitrogen is as high as 56.68%, much higher than that of 16.02% for air and 17.41% for carbon dioxide. Broken particles and large-sized agglomerates are found in the intermediate nitride products, and the particle surfaces become loose and porous. Combustion test results show that the combustion performance of Al particles in air is better than that in N₂. Nanoscale smooth spherical alumina particles are found in the condensed combustion products of Al particles under air. Whisker-like aluminum nitride (AlN) is observed under nitrogen.

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纯氮气氛下铝颗粒的放热行为

本文采用热分析系统和激光燃烧诊断系统对比研究了Al颗粒在N2和氧化气氛中的反应行为差异。结果表明，与空气和二氧化碳相比，在低加热速率下，Al颗粒在N2中具有更高的质量增益和热量释放。当温度升高到1000℃时，Al在氮气中的反应效率高达56.68%，远高于空气中的16.02%和二氧化碳中的17.41%。中间氮化物产物中出现颗粒破碎和大团聚体，颗粒表面疏松多孔。燃烧试验结果表明，Al颗粒在空气中的燃烧性能优于在N2中的燃烧性能。在铝颗粒在空气中的凝聚燃烧产物中发现了纳米级光滑的球形氧化铝颗粒。氮化铝（AlN）呈晶须状。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thermochimica Acta 化学-分析化学

CiteScore

6.50

自引率

8.60%

发文量

210

审稿时长

40 days

期刊介绍： Thermochimica Acta publishes original research contributions covering all aspects of thermoanalytical and calorimetric methods and their application to experimental chemistry, physics, biology and engineering. The journal aims to span the whole range from fundamental research to practical application. The journal focuses on the research that advances physical and analytical science of thermal phenomena. Therefore, the manuscripts are expected to provide important insights into the thermal phenomena studied or to propose significant improvements of analytical or computational techniques employed in thermal studies. Manuscripts that report the results of routine thermal measurements are not suitable for publication in Thermochimica Acta. The journal particularly welcomes papers from newly emerging areas as well as from the traditional strength areas: - New and improved instrumentation and methods - Thermal properties and behavior of materials - Kinetics of thermally stimulated processes