Phase State Diagrams of a Four-Component System Al-Si-N-O - Analysis of the Thermodynamic Stability of Sialon Compounds Dased on Energy Crystal-Chemistry-Reference-Cited by-同舟云学术

Phase State Diagrams of a Four-Component System Al-Si-N-O - Analysis of the Thermodynamic Stability of Sialon Compounds Dased on Energy Crystal-Chemistry

Published:2020-05 Issue: Volume:303 Page:97-103
ISSN:1662-9779
Container-title:Solid State Phenomena
language:
Short-container-title:SSP

Author:

Vlasov V.A.¹,Klopotov Anatoliy A.¹,Vereshchagin V.I.²,Volokitin O.G.¹,Bezukhov K.A.¹,Gorlenko N.P.¹,Tsvetkov N.A.¹

Affiliation:

1. Tomsk State University of Architecture and Building

2. National Research Tomsk Polytechnic University

Abstract

The paper presents the results of the analysis of the state diagram of compounds in the system А12O3-SiO2. It has been found that the presence and the concentration of oxygen have a very important effect on formation of compounds with a crystalline structure in different syngony based on SIALON. Oxygen contributes to transition of the metastable AlXSi3-XN4compound into stable one. The parameter of structural “friability” of compounds has been used in the analysis of thethermodynamic stability of compounds in the Al-Si-N-O system. It has been foundthat the SiAl4O2N4 compound with the 12H-SIALON structure (Pearson symbol hP32) has the greatest thermodynamic stability among the compounds under study in this system.

Publisher

Trans Tech Publications, Ltd.

Subject

Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics

Link

https://www.scientific.net/SSP.303.97.pdf

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