Dense SiC containing strongly aligned plate-like grains by magnetic treatment. Issue 3 (April 2015)

• Record Type: Journal Article
• Authors: Lee, S.H.; Feng, L.; Yin, J.; Lee, J.S.; Zhu, X.; Suzuki, T.S.; Sakka, Y.; Tanaka, H.
• Is Part Of: Ceramics international. Volume 41:Issue 3(2015)Part B
• Page Start: 5079
• Page End: 5084
• Publication Date: 2015-04
• Subjects: A. Sintering -- B. Microstructure-final -- C. Mechanical properties -- D. SiC -- Magnetic treatment; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2014.12.078
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Dense SiC having strongly aligned plate-like grains was prepared by slip casting under strong magnetic field and subsequent densification using Al3 BC3 additive. Irregular-shaped 6H-SiC powders in the green body were strongly aligned by the magnetic treatment. Subsequently, Al3 BC3 additive induced the formation of aligned plate-like SiC grains during densification. The hardness of SiC could be tailored up to 11% by the strong alignment of the grains. Crack deflection was also strongly affected by the direction of the aligned plate-like grains. As a result, the length of the cracks which propagated parallel to the elongated grains was 18.6% shorter compared to that formed perpendicular to the grains.