Low temperature and pressureless synthesis of MgAlON: qualitative analysis and formation evolution-Reference-Cited by-同舟云学术

Low temperature and pressureless synthesis of MgAlON: qualitative analysis and formation evolution

Published:2020-07-01 Issue:7 Volume:111 Page:537-545
ISSN:2195-8556
Container-title:International Journal of Materials Research
language:en
Short-container-title:

Author:

Cheng Xiang¹,Liu Lei¹,Qiu Guibo²,Bai Zhitao²,Guo Min¹,Cheng Fangqin³,Zhang Mei⁴

Affiliation:

1. State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing , P. R. China

2. Central Research Institute of Building and Construction Co., Ltd, MCC Group, Beijing , P. R. China

3. Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes in Shanxi University, Taiyuan , P. R. China

4. State Key Laboratory of Advanced Metallurgy, School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, P. R. China / Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes in Shanxi University, Taiyuan , P. R. China

Abstract

Abstract By calculating the Gibbs free energy of a magnesium aluminium oxynitride (MgAlON) system, pure MgAlON was obtained by pressureless sintering at 1 570 °C in a nitrogen atmosphere using Al, Al2O3, and MgO as raw materials. The formation mechanism of MgAlON and phase evolution of the Al-Al2O3-MgO-N2 system were investigated. The aluminium was melted at approximately 660 °C and formed AlN in the range 740- 1 250 °C. The reaction of AlN, Al2O3, and MgO started to form a primary crystalline MgAlON phase at 950 °C, and as the temperature increased, the minerals continuously dissolved in the primary crystalline phase.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics

Link

https://www.degruyter.com/document/doi/10.3139/146.111916/pdf

Reference29 articles.

1. Mechanical properties and microstructures of hot-pressed MgAlON–BN composites

2. Reactions between MgAlON-BN Composites and CaO-SiO2-Al2O3-MgO-“FeO” Slag

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