Study on the preparation of the ceramic composite-lined steel pipe with the SHS reaction system of Al-Fe2O3-Cr2O3

The Al2O3-Fe-Cr composite was prepared and lined on the inner surface of the seamless steel pipe with the gravitational separation SHS method by using Al, Fe2O3 and Cr2O3 powders as the raw materials for improving the properties of the Al2O3-Fe-Cr composite-lined steel pipe. The effect of the amount of Cr2O3 addition on the preparation process in the SHS reaction system of Al-Fe2O3-Cr2O3 was discussed, and the micro-structure and properties of the Al2O3-Fe-Cr composite were observed and investigated. The results showed that a transition structure was formed in the SHS, which could improve the bonding quality of the composite-lined steel pipe; with the addition of Cr2O3, the Fe-Cr alloy formed and could improve the anti-corrosion ability of the Al2O3-Fe-Cr composite; the SHS speed decreased and the thickness and hardness of the Al2O3-Fe-Cr composite increased with the increase of the Cr2O3 addition, and then the abrasion resistance was improved.