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利用离心自蔓延高温合成技术，在普通碳素钢管的内壁涂敷一层厚度均匀的Ａｌ２Ｏ３ 陶瓷层．研究表明，在Ａｌ＋ Ｆｅ２Ｏ３ 反应体系中，适当增加配方中Ａｌ或ＳｉＯ２ 的加入量，化学反应趋向于完全，而增加ＣｒＯ３ 的加入量却得到相反的结果；在Ａｌ＋Ｆｅ２Ｏ３ 体系中同时加入ＳｉＯ２ 和ＣｒＯ３，显著降低了陶瓷层的孔隙度
Using centrifugal self-propagating high temperature synthesis technology, an even layer of Al2O3 ceramic layer is coated on the inner wall of an ordinary carbon steel pipe. The results show that in the Al + Fe2O3 reaction system, the addition of Al or SiO2 in the formulation increases properly, and the chemical reaction tends to be complete, whereas increasing the addition of CrO3 results in the opposite result; addition of SiO2 and CrO3 in the Al + Fe2O3 system significantly increases The porosity of the ceramic layer is reduced