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采用重力分离SHS技术制备双衬陶瓷复合管 ,双衬陶瓷间因出现Al2 O3 基体和 (Al2 O3 +FeO·Al2 O3 )共晶组织的重熔区使双衬陶瓷间出现局部冶金结合方式 ,使得双衬陶瓷裂纹密度下降。第二衬陶瓷层的相对密度和硬度比第一衬陶瓷层均有所提高 ,但双衬陶瓷层间抗压剪强度和双衬陶瓷复合管的抗压溃强度比钢管与陶瓷层间抗压剪强度及单衬陶瓷复合管的抗压溃强度均有所下降。
SHS technique was used to prepare the double-lined ceramic composite pipe. Local metallurgical bonding between the double lined ceramics appeared due to the presence of Al2 O3 matrix and the remelting zone of (Al2 O3 + FeO · Al2 O3) Double lining ceramic crack density decreased. The relative density and hardness of the second ceramic lining are higher than that of the first ceramic lining, but the compressive shear strength between the double lining ceramic and the crushing strength of the double lining ceramic composite is higher than the compressive strength between the steel tube and the ceramic The shear strength and the crush strength of the single-lined ceramic composite pipe decreased.