Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2025-01-02T21:58:10.408Z Has data issue: false hasContentIssue false
  • English
  • Français

Nonepitaxial heterogeneous nucleation of α-sialon in the Ca-doped system

Published online by Cambridge University Press:  31 January 2011

Ya-Wen Li ,
Pei-Ling Wang ,
Wei-Wu Chen ,
Jing-Wei Feng ,
Yi-Bing Cheng  and
Dong-Sheng Yan
Ya-Wen Li
Affiliation:
The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
Pei-Ling Wang
Affiliation:
The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
Wei-Wu Chen
Affiliation:
The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
Jing-Wei Feng
Affiliation:
The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
Yi-Bing Cheng
Affiliation:
Department of Materials Engineering, Monash University, Clayton, Victoria, 3168, Australia
Dong-Sheng Yan
Affiliation:
The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China
Get access

Abstract

Ca-α-sialon compacts pressureless-sintered to intermediate temperatures, which consisted of both α-sialon and unreacted α–Si3N4 grains, were investigated with transmission electron microscopy for an overall composition Ca1.8Si6.6Al5.4O1.8N14.2. Special attention was paid to identification of the possible crystallographic orientation between a-sialon and the α–Si3N4 particles. In contrast to the frequently occurring heteroepitaxial nucleation of α-sialon in rare-earth-doped samples with low x values, this study showed that most of the newly formed α-sialon grains had no epitaxial orientation relationship with the α–Si3N4 particles, suggesting nonepitaxial heterogeneous nucleation to be a more probable mechanism for the Ca–α-sialon phase with high Ca concentrations.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 2 , February 2001 , pp. 578 - 582
Copyright
Copyright © Materials Research Society 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.Lewis, M.H. and Lumby, R.J., Powder Metall. 26, 73 (1983).CrossRefGoogle Scholar
2.Hampshire, S., Park, H.K., Thompson, D.P., and Jack, K.H., Nature 274, 880 (1978).CrossRefGoogle Scholar
3.Cao, G.Z. and Metselaar, R., Chem. Mater. 3, 242 (1991).CrossRefGoogle Scholar
4.Petzow, G. and Hoffmann, M.J., Mater. Sci. Forum 113–115, 91 (1993).CrossRefGoogle Scholar
5.Kramer, M., Hoffmann, M.J., and Petzow, G., J. Am. Ceram. Soc. 76, 2778 (1993).CrossRefGoogle Scholar
6.Hirao, K., Nagaoka, T., and Brito, M.E., J. Am. Ceram. Soc. 77, 1857 (1994).CrossRefGoogle Scholar
7.Hwang, S.L. and Chen, I-W., J. Am. Ceram. Soc. 77, 1719 (1994).CrossRefGoogle Scholar
8.Hwang, S.L. and Chen, I-W., J. Am. Ceram. Soc. 77, 1711 (1994).CrossRefGoogle Scholar
9.Gerhardt, M., in Crystal Growth: An Introduction, edited by Hartman, P. (North-Holland, Amsterdam, The Netherlands, 1973), p. 105.Google Scholar
10.Chen, I.W. and Rosenflanz, A., Nature 389, 701 (1997).CrossRefGoogle Scholar
11.Shen, Z.J., Nordberg, L.O., Nygren, M., and Ekström, T., in Engineering Ceramics ’96: Higher Reliability through Processing, edited by Babini, G.N. (Kluwer Academic, Dorbrecht, The Netherlands, 1997), pp. 169–178.CrossRefGoogle Scholar
12.Wood, C., Zhao, H., and Cheng, Y.B., J. Am. Ceram. Soc. 82, 421 (1999).CrossRefGoogle Scholar
13.Li, Y.W., Wang, P.L., Chen, W.W., Cheng, Y.B., and Yan, D.S.. J. Eur. Ceram. Soc. 20, 1803 (2000).CrossRefGoogle Scholar
14.Chen, I-W. and Hwang, S-L., in Silicon Nitride Ceramics Scientific and Technological Advances, edited by Chen, I.W., Becher, P.F., Motomo, M., Petzow, G. and Yen, T-S. (Mater. Res. Soc. Symp. Proc., 287, Pittsburgh, PA, 1993), pp. 209–226.Google Scholar
15.Johansson, K.E., Palm, T., and Werner, P.E., J. Phys. E.: Sci. Instrum. 13, 1289 (1980).CrossRefGoogle Scholar
16.Werner, P.E., Arkiv fur Kemi. 31, 513 (1964).Google Scholar
17.Wang, P.L., Zhang, C., Sun, W.Y., and Yan, D.S., J. Eur. Ceram. Soc. 19, 533 (1999).Google Scholar
18.Chatfield, C., Ekstrom, T., and Mikus, M., J. Mater. Sci. 21, 2297 (1986).CrossRefGoogle Scholar
19.Sun, W.Y., Tien, T.Y., and Yen, T.S., J. Am. Ceram. Soc. 74, 2547 (1991).CrossRefGoogle Scholar
20.Shen, Z.J. and Nygren, M., J. Eur. Ceram. Soc. 17, 1639 (1997).CrossRefGoogle Scholar
21.Xu, F.F., Wen, S.L., Nordberg, L.O., and Ekström, T., J. Eur. Ceram. Soc. 17, 1631 (1997).Google Scholar