Aluminium features a large chemical affinity to oxygen, which renders it suited to use for a reducing agent in the thermite reaction. A great powder of aluminium metallic reacts explosively on connection with liquid oxygen; below ordinary circumstances, however, aluminium types a skinny oxide layer (~5 nm at place temperature)[34] https://collinhynyi.madmouseblog.com/4890738/the-aluminium-slats-adelaide-diaries