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用重力分离SHS法制备了陶瓷内衬复合钢管，研究了SiO2添加剂对SHS铝热-重力分离法制备陶瓷内衬复合钢管组织结构、相对密度与力学性能的影响。研究发现，复合钢管具有金属-过渡铁-陶瓷三层结构；在燃烧过程中作为稀释剂存在的SiO2，严重影响Al2O3-e熔体的重力分离过程，并对陶瓷致密化具有双重影响；陶瓷相对密度与复合钢管抗压溃强度在SiO2含量为2％时出现极大值，陶瓷硬度、断裂韧性与复合钢管抗压剪强度随SiO2含量增加而降低。
SHS method was used to prepare ceramic lined composite steel tube. The effects of SiO2 additive on the microstructure, relative density and mechanical properties of ceramic lined composite steel tube by SHS thermogravimetry were studied. The results show that the composite steel tube has a three-layer structure of metal-transitional iron-ceramic. SiO2, which acts as a diluent during combustion, has a serious impact on the gravity separation of the Al2O3-e melt and has a dual effect on the densification of the ceramic. The density and composite steel pipe crush strength in the SiO2 content of 2% maximum, ceramic hardness, fracture toughness and compressive shear strength of composite steel pipe decreases with increasing SiO2 content.