Development of SiAlON - From Mechanical to Optical Applications


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Various rare-earth-doped α-SiAlON powders with high purity were prepared to study mechanical and optical properties of SiAlON-based functional materials in connection with ionic radius and electronic structure of rare-earth elements. Single phase rare-earth-doped α-SiAlON powders were obtained at a temperature as low as 1873 K by heating powder mixtures of rare-earth oxide, AlN and highly active ultrafine amorphous Si3N4. Bending strength of highly dense rare-earth-doped α/β-SiAlON-based ceramics was increased with decreasing radii of rare-earth ions, i.e., Yb-SiAlON-based ceramics exhibited excellent high-temperature strength and oxidation resistance caused by the small ionic radius of ytterbium. As for optical application, α-SiAlON is an excellent host lattice with good thermal and chemical stability for doping rare-earth element which activates photoluminescence. Europium-doped Ca-α-SiAlON phosphor formulated as CaxEuy(Si,Al)12(O,N)16 (where 0



Edited by:

Katsutoshi Komeya, Yohtaro Matsuo and Takashi Goto




T. Yamada et al., "Development of SiAlON - From Mechanical to Optical Applications", Key Engineering Materials, Vol. 352, pp. 173-178, 2007

Online since:

August 2007




[1] G.G. Deely, J.M. Herbert and N.C. Moore, Powder Metall., 8.

[8] 145-51 (1961).

[2] K. Komeya, Ceramics Japan, 35.

[1] 30-31 (2000).

[3] S. Hampshire, H.K. Park, D.P. Thomson and K.H. Jack, Nature, 274, 880-82 (1978).

[4] T. Yamada, T. Nakayasu, T. Takahashi, T. Yamao and Y. Kohtoku, pp.672-79 in Proc., 4th Int. Symp. on Ceramic Materials and Components for Engines, held in Goteborg, Sweden, 10-12 June 1991, Edited by R. Carlsson, T. Johansson and L. Kahlman, Elsevier Applied Science, London and New York, (1992).


[5] T. Yamada, T. Takahashi, T. Nakayasu, Y. Kohtoku and K. Terai, Advanced Mater. '93 I/A, 14A, 553-56 (1993).

[6] J.W.H. van Krevel, I.W.T. van Rutten, H. Mandai, H.T. Hintzen and R. Metselaar, J. Solid State Chem., 165.

[1] 19-24 (2002).

[7] R.J. Xie, M. Mitomo, K. Ueda, F.F. Xu and Y. Akimune, J. Am. Ceram. Soc., 85.

[5] 1229-34 (2002).

[8] R.J. Xie, N. Hirosaki, M. Mitomo, Y. Yamamoto, T. Suehiro and K. Sakuma, J. Phys. Chem., B 2004, 108, 12027-31 (2004).

[9] T. Yamada, T. Kawahito and T. Iwai, pp.333-42 in Proc., 1st Int. Symp. on Ceramic Components for Engine, held in Hakone, Japan, 17-19 October 1983, Edited by S. Somiya, E. Kanai and K. Ando, KTK Scientific Publishers, Tokyo, Japan, (1984).

[10] T. Yamada and Y. Kohtoku, Jpn. Chem. Ind. Assn. Monthly, 42.

[12] 8-13 (1989).

[11] T. Yamada, Am. Ceram. Soc. Bull, 72.

[5] 99-106 (1993).

[12] T. Yamada, pp.15-27 in Ceramic Transactions, 42, Silicon-Based Structural Ceramics, PAC RIM Meeting, held in Honolulu, Hawaii, USA, 7-10 November 1993, Edited by B.W. Sheldon and S.C. Danforth , The American Ceramic Society, Westerville, Ohio, USA, (1994).

[13] F. Izumi, M. Mitomo and Y. Bando, J. Mater. Sci., 19, 3115-20 (1984).

[14] K. Suzuki, N. Kageyama, K. Furukawa, T. Kanno, pp.697-704 in Proc., 2nd Int. Symp. on Ceramic Materials and Components for Engines, held in Lubeck-Travemunde, FRG, 14-17 April 1986, Edited by W. Bunk and H. Hausner, Verlag Deutsche Keramiche Gesellschaft, Bad Honnef, Germany, (1986).