含能材料2024，Vol.32Issue(1)：20-30,11.DOI:10.11943/CJEM2023204
Al-W合金燃料的氧化过程及性能提升机理
Oxidation Process and Performance Promotion Mechanism of the Al-W Alloy Fuel
摘要
Abstract
To elucidate the promotion mechanism of the oxidation performance of the Al-W alloy fuel,Al-20W and Al-30W al-loy fuels were prepared by the aluminum thermal reduction and the ultra-high temperature gas atomization,and their oxidation process were studied by thermogravimetric/differential thermal analysis,X-ray diffractometer,and scanning electron microscope/energy dispersive spectrometer.The results indicate that Al-20W and Al-30W alloy fuels both contain metastable Al/W alloy phases,and the types and morphology of the Al/W alloy phases transform with increasing temperature.Al-20W and Al-30W al-loy fuels have better thermal oxidation performance than pure Al fuel,with complete oxidation at 1300℃and 1500℃,respec-tively,and all oxidation products WO3 volatilizing.The presence of W enhances the oxidation performance of the Al-W alloy fu-els.The promotion mechanism includes:the volatilization of WO3 provides channels for O2 to diffuse into the interior of the par-ticles.As an"O atoms transport ship",WO3 transports O atoms to the pure Al phase,promoting the oxidation of the pure Al phase.WO3 undergoes further chemical reactions and ultimately volatilize in a gaseous form,promoting the oxidation of the phase containing W.关键词
金属材料/Al-W合金燃料/Al/W合金相/氧化过程/提升机理Key words
metal material/Al-W alloy fuel/Al/W alloy phase/oxidation process/promotion mechanism分类
军事科技引用本文复制引用
胡敖博,刘津阁,赵超越,陈鹏,李鹏,孙兴昀,蔡水洲..Al-W合金燃料的氧化过程及性能提升机理[J].含能材料,2024,32(1):20-30,11.基金项目
国家自然科学基金(12202349) National Natural Science Foundation of China(No.12202349) （12202349）
