Corrosion mechanism of BN-ZrO2 based side-dam by molten steel. Issue 9 (August 2022)

• Record Type: Journal Article
• Authors: Qian, Fan; Guo, Hairong; He, Yuanhang; Liu, Guoqi; Li, Hualong; Yang, Wengang; Li, Hongxia; Khan, Sayed Ali
• Is Part Of: Journal of the European Ceramic Society. Volume 42:Issue 9(2022)
• Page Start: 3996
• Page End: 4005
• Publication Date: 2022-08
• Subjects: Thin strip continuous casting -- BN-ZrO2 based ceramics -- Side-dam -- Amorphous sintering; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2022.03.026
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: BN-ZrO2 -based side-dam is a hot spot for research and application of the thin strip continuous casting process. The corrosion mechanism of BN-ZrO2 based side-dam by molten steel has been demonstrated using contemporary detection technologies and microscopic analysis (I) Amorphous generation: BN oxidizes and volatilizes quickly at first. Residual products and steel inclusions combine to create the amorphous, which serves as a mass transfer medium. (II) Dissolution-precipitation: the components of side-dam such as m -ZrO2, Al2 O3, etc., which undergo dissolution-precipitation mass transfer through the amorphous in the working layer to achieve dependent growth as enrichment between crystals such as m -ZrO2, corundum, and spinel. (III) Solid-phase skeleton formation: m -ZrO2, corundum, spinel, and other coarse-grained particles unite and form a skeleton, with amorphous filling the structure, generating a slag mass, and sintering primarily in the solid phase, which is increasing macroscopically.