Preparation and Properties of Yttrium‐Silicon‐Aluminum Oxynitride Glasses

Journal of the American Ceramic Society - Tập 62 Số 9-10 - Trang 491-494 - 1979
Ronald E. Loehman1
1Sandia Laboratories Albuquerque, New Mexico 87185

Tóm tắt

Glasses containing up to 7 at.% nitrogen were prepared in the system Y‐Si‐Al‐O‐N. The glass transition temperature, hardness, and relative fracture toughness increase and the thermal expansion coefficient decreases with increasing nitrogen content. Weight losses after 350 h in 95°C distilled water are not simply related to nitrogen content, but for some compositions they are half that reported for fused silica. The electrical conductivity at 548°C and 10 kHz is 7.8×10−10 (Ω·cm)−1 for one composition. Fourier transform ir spectroscopic analysis indicates the presence of Si‐N bonds in the glasses. The data suggest that nitrogen substitutes for oxygen in the glass network to produce a more highly cross‐linked structure.

Từ khóa


Tài liệu tham khảo

Elmer T. H., 1966, Proceedings of the 7th International Congress on Glass, 301

10.1111/j.1151-2916.1967.tb15108.x

Mulfinger H. O., 1966, Physical and Chemical Solubility of Nitrogen in Glass Melts, Cem. Concr. Res, 49, 462

Harding F. L., 1970, Effects of Silicon Nitride Additions to a Container Glass Batch, Glass Technol, 11, 54

10.1007/BF00552043

Ram Kossowsky, 1973, The Microstructure of Hot‐Pressed Silicon Nitride, Cem. Concr. Res, 8, 1603

Drew P., 1974, The Microstructure of Silicon Nitride Ceramics During Hot‐Pressing Transformations, Cem. Concr. Res, 9, 261

Nuttall K., 1974, Microstructure of Hot‐Pressed Silicon Nitride, Cem. Concr. Res, 9, 850

Jack K. H., 1976, Review: Sialons and Related Nitrogen Ceramics, Cem. Concr. Res, 11, 1135

Marion R. H., 1978, “The Use of Indentation Fracture 10 Determine Fracture Toughness

10.1021/j150516a002

Leedecke C. J., “Electrical Properties of Yurium‐Aluminum‐Silicon Oxynitride Glasses

Svante Prochazka, 1978, Synthesis and Characterization of a Pure Silicon Nitride Powder, Am. Ceram. Soc. Bull, 57, 579

10.1149/1.2408318

Thông tin
Thông tin xuất bản

Journal of the American Ceramic Society

Tập 62 Số 9-10

491-494

Thông tin tác giả