Influence of Sintering Aids on the Nitridation of Reaction Bonded Si3N4/BN Ceramics


Article Preview

The influences of different sintering aids, including Fe2O3, Fe(NO3)3·9H2O, Y2O3+Al2O3 and MgO+Al2O3+SiO2, on the nitridation of reaction bonded Si3N4/BN ceramics were conducted at 1350°C for 2h. Results indicate that the addition of sintering aids could facilitate the nitridation process resulting in higher nitridation percent due to the reactions between sintering aids and surface silica on silicon powder. When 5wt. % of Y2O3 and 2wt. % Al2O3 were added, the nitridation percent reached to 94.4%. The addition of sintering aids has obvious effect on the ratio of α-Si3N4/β-Si3N4. The increase of β-Si3N4 ratio was attributed to the direct reaction of silicon with nitrogen.



Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie




T. S. Lin and D. C. Jia, "Influence of Sintering Aids on the Nitridation of Reaction Bonded Si3N4/BN Ceramics", Key Engineering Materials, Vols. 353-358, pp. 1497-1500, 2007

Online since:

September 2007




[1] R.N. Katz: in Structural Ceramics, Treatise on Materials Science and Technology, edited by J.B. Wachtman, Jr. (Academic Press, New York, 1989), Vol. 29, p.1.

[2] F.L. Riley: J. Am. Ceram. Soc. Vol. 83 (2000), p.245.

[3] Y. Goto, G. Thomas: J. Mater. Sci. Vol. 30 (1995), p.2194.

[4] F. Yu, N. Nagarajan: J. Am. Ceram. Soc. Vol. 84 (1) (2001), p.13.

[5] N. Keighi: J. Mater. Sci. Lett. Vol. 4 (1985), p.755.

[6] S. Daniet: J. Am. Ceram. Soc. Vol. 75 (5) (1992), p.1063.

[7] R. Pompe, L. Hermansson: Sprechsaal Vol. 115 (1982), p.1098.

[8] L.K.L. Falk, G.L. Dunlop, R. Pompe: Mater. Sci. Eng. Vol. 71 (1985), p.123.

[9] J-L. Huang, S-W. Chen, H-H. Lu, W-H. Chan: Ceram. Inter. Vol. 22 (1996), p.27.

[10] R. Ramachandra Rao, H.N. Roopa, T.S. Kannan: J. Eur. Ceram. Soc. Vol. 19 (1999), p.2145.

[11] R. Ramachandra Rao, T.S. Kannan: J. Mater. Res. Vol. 17 (2002), p.386.

[12] O.N. Grigoŕev, O.D. Shcherbina, I.V. Kozak: Refractories and industrial ceramics Vol. 45 (2) (2004), p.100.

[13] Q.T. Zhang: Journal of Ceramics Vol. 21(2000), p.23.

[14] H. Derbisbegović, F.L. Rileg: J, Mater. Sci. Vol. 16(1981), p. (1945).

[15] S.M. Boyer, A.J. Moulson: J. Mater. Sci. Vol. 13 (1978), p.1637.

Fetching data from Crossref.
This may take some time to load.