Large Scale Translucent Y-α-Sialon Ceramics Prepared by Two-Steps Hot Pressing

Jiu Jun Xu; Ying Chun Shan; Jiang Tao Li; Yong Ge Cao

doi:10.4028/www.scientific.net/KEM.434-435.668

Paper Titles

Influence of Deposition Parameters on the Characteristics of AZOY Transparent Conducting Oxide Thin Film
p.653

Effects of Vacuum Heat Treatment of Nano Powder on Sintering of Transparent Nano-Crystalline MgAl₂O₄ Ceramics
p.657

Preparation and Properties of Translucent Y-α-Sialon Ceramics by Two-Steps Hot Pressing
p.661

Fabrication and Optical Properties of Cr³⁺:YSAG Transparent Ceramics
p.664

Large Scale Translucent Y-α-Sialon Ceramics Prepared by Two-Steps Hot Pressing
p.668

Frequency Dependence of AC Conductivity in Iron Phosphate Glasses
p.671

Effects of the Starting Powders on Microstructure and Properties of Porous Silica Ceramics
p.674

Preparation and Grain Growth of Pb(Zr_0.95Ti_0.05)O₃ Porous Ceramics Prepared by One-Step Pyrolysis Process Using Non-Aqueous Pechini Method
p.678

Preparation of Porous Mullite Ceramics Using Al as Foaming Agent
p.682

HomeKey Engineering MaterialsKey Engineering Materials Vols. 434-435Large Scale Translucent Y-α-Sialon Ceramics...

Large Scale Translucent Y-α-Sialon Ceramics Prepared by Two-Steps Hot Pressing

Abstract:

Large scale translucent yttrium-doped α-sialon (80 mm in diameter) with the composition of Y0.4Si9.6Al2.4O1.2N14.8 (m=1.2 and n=1.0) was prepared by two-steps hot pressing sintering (first heating to 1850 °C holding for 30 min, then continue heating to 1900 °C holding for 30 min) at 25 MPa in nitrogen, and the optical property was approached over the wavelength range 900-5000 nm. The results showed that dense sample was obtained and its assemblage only consisted of single α-sialon phase. The large scale sialon had uniform and higher infrared transmittance property. The maximum infrared transmittance for 1.0 mm thick specimen could reach 66% at 3200 nm. It is attributed to the dense, uniform, equaxed microstructure. In addition to high optical transmission property, the sample showed higher hardness of 20 GPa and better fracture toughness of 5 MPa•m1/2.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 434-435)

Pages:

668-670

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.434-435.668

Citation:

Cite this paper

Online since:

March 2010

Authors:

Jiu Jun Xu, Ying Chun Shan, Jiang Tao Li, Yong Ge Cao

Keywords:

Optical Property, Two-Steps Hot Pressing, α-Sialon

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] H. Mandal: J. Eur. Ceram. Soc. Vol. 19(1999), p.2349.

Google Scholar

[2] S. Hampshire, H.K. Jack, D.P. Thompson, and K.H. Jack: Nature Vol. 274(1978), p.880.

Google Scholar

[3] Z.K. Huang, T.Y. Tien, and T.S. Yen: J. Am. Ceram. Soc. Vol. 69 (1986), p.241.

Google Scholar

[4] M.K. Cinibulk, G. Thomas, and S. M. Johnson: J. Am. Ceram. Soc. Vol. 75(1992), p. (2037).

Google Scholar

[5] M.I. Jones, H. Hyuga, K. Hirao, and Y. Yamauchi: J. Am. Ceram. Soc. Vol. 87(2004), p.714.

Google Scholar

[6] X.L. Su, P.L. Wang, W.W. Chen, et al.: J. Am. Ceram. Soc. Vol. 87(2004), p.730.

Google Scholar

[7] X.L. Su, P.L. Wang, W.W. Chen: Journal of Materials Science Vol. 39(2004), p.6257.

Google Scholar

[8] X.L. Su, P.L. Wang, W.W. Chen, Y.B. Cheng, D. S Yan: Materials Letters Vol. 58(2004), p. (1985).

Google Scholar

[9] Y. Xiong, Z.Y. Fu, H. Wang, et al.: Materials Science and Engineering A Vol. 488(2008), p.475.

Google Scholar

[10] W.W. Chen, X.L. Su, P.L. Wang and D.S. Yan: J. Am. Ceram. Soc. Vol. 88(2005), p.2304.

Google Scholar

[11] W. Luo: Master Degree Thesis (Harbin Institute of Technology, Harbin, China, 2006).

Google Scholar

[12] G.R. Anstis, P. Chantikul, B.R. Lawn, D.B. Marshall: J. Am. Ceram. Soc. Vol. 64(1981).

Google Scholar