1999•Materials Science and TechnologyRequires access
Synthesis mechanism and additives behavior for ceramic layers lining in pipes produced by gravitational separation SHS method
Xin Du
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Abstract
Based on producing ceramic lined composite pipes by gravitational separation SHS method, the synthesis mechanism and additive behavior for lined ceramics were studied. It was obtained that synthesis process underwent three basic processes in the consequence of combustion synthesis, liquid liquid phase separation and ceramic solidification, and densification of ceramic layers run through the three processes. The properties of ceramic layers and composite pipes were effected by additives SiO 2, CrO 3 and NaF owing to their influences on the three basic processes, and better comprehensive properties were achieved in lined ceramic layers and composite pipes under the condition of thermit compound with Al+Fe 2O 3+2%SiO 2+6%CrO 3+1%NaF.Synthesisme