The modification of our energetic mix is one of the crucial challenges to mitigate climate change. Various solutions are studied, and we will probably use most of them in the future. One of these solutions is metal combustion. Indeed, metals have important energy properties, and the combustion of metal powder does not produce greenhouse gases except NOx, and also generates oxides which can be extracted then recycled to transform them back into fresh combustibles. Among others, Aluminum (Al) is very present on earth to gratify the potential global needs. As a matter of fact, Al possesses an important energetic density as compared to other metals like iron. Due to the difficulty of stabilizing dust flames only fed by Al in air, some applications should choose hybrid flames. The main objective of this study is to better characterize flames burning aluminum blended with CH₄. As an original contribution, a non-invasive methodology, i.e. two-color pyrometry, has been set up to do so. This article unveils the structure of such a flame fed by a high level of particle density. Through the observation of flame radiation and the evaluation of flame thickness, it was concluded that the quantity of injected methane could significantly change the regime of the central premixed flame that directly impacts the contribution of the diffusion flame to the reaction.

改变我们的能源结构是缓解气候变化的关键挑战之一。研究了各种解决方案，我们将来可能会使用其中的大部分。这些解决方案之一是金属燃烧。事实上，金属具有重要的能源特性，金属粉末的燃烧不会产生除氮氧化物外的温室气体，并且还会产生氧化物，这些氧化物可以被提取然后回收，以将其转化回新鲜的可燃物。其中，铝（Al）在地球上的存在非常广泛，可以满足全球的潜在需求。事实上，与铁等其他金属相比，铝具有重要的能量密度。由于空气中仅由铝供给的粉尘火焰难以稳定，因此某些应用应选择混合火焰。本研究的主要目的是更好地表征与 CH ₄混合的铝的燃烧火焰。作为一项原创贡献，已经建立了一种非侵入性方法，即双色高温测量法。本文揭示了这种由高水平颗粒密度供给的火焰的结构。通过火焰辐射的观察和火焰厚度的评估，得出结论：注入甲烷的量可以显着改变中心预混火焰的状态，直接影响扩散火焰对反应的贡献。