Texturing of Si3N4 Ceramics via Strong Magnetic Field Alignment

Abstract:

Article Preview

This paper reports the texture development in Si3N4 by strong magnetic field alignment (SMFA), using slip casting of α-Si3N4 raw powder (SN-E10) and pressureless sintering. The texture of β-Si3N4 in the green and sintered bodies was characterized by X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The a, b-axis and c-axis aligned β-Si3N4 has been obtained by the static and rotating magnetic field of 12 T, respectively. The β-seed addition and prolonged sintering both enhance the texture, but the former is more efficient. This work suggests an efficient SMFA strategy of producing highly textured β-Si3N4, particularly the unidirectionally c-axis aligned β-Si3N4 by seeding the α-raw powder using the less-agglomerated β-phase particles.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

871-874

DOI:

10.4028/www.scientific.net/KEM.368-372.871

Citation:

X. W. Zhu et al., "Texturing of Si3N4 Ceramics via Strong Magnetic Field Alignment", Key Engineering Materials, Vols. 368-372, pp. 871-874, 2008

Online since:

February 2008

Export:

Price:

$35.00

[1] K. Hirao: J. Ceram. Soc. Jpn Vol. 104 (2006), p.665.

[2] Y. Sakka and T. S. Suzuki: J. Ceram. Soc. Jpn Vol. 113 (2005), p.26.

[3] S. Q. Li, K. Sassa and S. Asai: J. Am. Ceram. Soc Vol. 87 (2004), p.1384.

[4] X. W. Zhu, T. S. Suzuki, T. Uchikoshi, T. Nishimura and Y. Sakka: J. Ceram. Soc. Jpn Vol. 114 (2006), p.979.

[5] T. Kimura: Polym. J Vol. 35 (2003), p.923.

[6] S. Q. Li, K. Sassa, K. Iwai and S. Asai: Mater. Trans Vol. 45 (2004), p.3124.

[7] S. Q. Li, K. Sassa and S. Asai: Mater. Lett Vol. 59 (2005), p.153.

[8] F. K. Lotgering: J. Inorg. Nucl. Chem Vol. 9 (1959), p.113.

[9] D. S. Park and C. W. Kim: J. Mater. Sci Vol. 34 (1999), p.5827.

[10] H. Teshima, K. Hirao, M. Toriyama and S. Kanzaki: J. Ceram. Soc. Jpn Vol. 107 (1999), p.1216.

[11] D. Muscat, M. D. Pugh and R. A. L. Drew: J. Am. Ceram. Soc Vol. 75 (1992), p.2713.

In order to see related information, you need to Login.