重力分离SHS双衬陶瓷复合管耐蚀性研究

基金项目:

国家自然科学基金资助项目59972043

INVESTIGATION ON CORROSION-RESISTANCE OF DOUBLE LINED CERAMIC COMPOSITE PIPES PRODUCED BY GRAVITATIONAL SEPARATION SHS PROCESS

摘要: 通过重力分离SHS技术制备双衬陶瓷复合管,发现复衬陶瓷层的尖晶石含量和组织形貌发生改变,双衬陶瓷层间存在着Al₂O₃基体和(Al₂O₃+FeO·Al₂O₃)共晶组织的重熔区,引起底衬及复衬陶瓷裂纹密度下降。复合管的耐蚀性测试结果表明,双衬陶瓷复合管的腐蚀失重率分别不超过1Cr18Ni9Ti不锈钢管0.5%和单衬陶瓷复合管2.0%。
- 重力分离SHS法 /
- 陶瓷内衬复合管 /
- 二次SHS涂覆 /
- 双衬陶瓷 /
- 耐蚀性
Abstract: In double lined ceramic composite pipes, were prepared by gravitational separation SHS process content and morphology of FeO·Al₂O₃ spinel phase in second lined ceramics are different from the first one, refused areas composed of Al₂O₃ matrix and (Al₂O₃+FeO·Al₂O₃) eutecticum between two lined ceramics were observed, and crack density of each lined ceramics was reduced. Results of corrosion-resistance for double lined ceramic composite pipes show that corrosion weight-loss rate are reduced below 0.5% and 2.0% respectively compared with 1Cr18Ni9Ti stainless steel and single lined ones.
- gravitational separation SHS process /
- ceramic composite pipes /
- twice SHS coating /
- double lined ceramics /
- corrosion-resistance