(1. 南京工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院， 南京 210009;
2. 南京工業(yè)大學(xué) 電光源材料研究所， 南京 210015))
摘 要: 對在Ni-Si、 Ti-Ni和鋁熱反應(yīng)體系中的螺旋燃燒進(jìn)行了實(shí)驗(yàn)研究與觀察。主要研究了Ni-Si系統(tǒng)中原始化學(xué)配比、坯體的原始密度、 硅顆粒尺寸及起始溫度對螺旋燃燒工藝的影響以及Ti-Ni系統(tǒng)中預(yù)熱溫度及原始化學(xué)配比對燃燒工藝及模式的影響。結(jié)果表明： 螺旋燃燒是一種非穩(wěn)態(tài)燃燒， 弱的放熱反應(yīng)或反應(yīng)中的熱量損失可能導(dǎo)致燃燒源的不穩(wěn)定， 強(qiáng)化反應(yīng)過程（如預(yù)熱）能夠改變?nèi)紵Ｊ剑?使非穩(wěn)態(tài)螺旋燃燒向穩(wěn)態(tài)燃燒轉(zhuǎn)變。
關(guān)鍵字: 螺旋燃燒； 燃燒模式； 燃燒合成
（ 1. College of Materials Science and Engineering,
Nanjing University of Technology,
Nanjing 210009, China;
2. Research Institute of Electric Light Source Materials,Nanjing University of Technology, Nanjing 210015, China）
Abstract: The experimental investigation and observation on the spin combustion in Ni-Si, Ti-Ni and thermite systems were presented. The effects of the initial stoichiometry, initial density, particle size of silicon, and initial temperature on the spin combustion process were studied mainly in Ni-Si system. In Ti-Ni system, the effects of preheating temperature and initial stoichiometry of compact on combustion process and mode were studied. The results show that the spin combustion is one of the non-steady state combustion. Weak exothermic reaction or heat loss in the reaction can result in the non-stability of combustion wave. Strengthening the reaction process such as preheating can change combustion mode from unstable spin combustion to stable one.
Key words: spin combustion; combustion mode; combustion synthesis
