Open Access

ARTICLE

Low-Temperature Synthesis of Nano-AlN Based on Solid Nitrogen Source by Plasma-Assisted Ball Milling

by Zhuoli Yang¹, Xianbin Hou², Leyang Dai^2,*

1 Xiamen Ocean Vocational College, Xiamen, 361100, China
2 Fujian Provincial Key Laboratory of Naval Architecture and Ocean Engineering, Institute of Marine Engineering, Jimei University, Xiamen, 361100, China

* Corresponding Author: Leyang Dai. Email:

(This article belongs to the Special Issue: Carbon-Based Nanomaterials from Renewable Materials: Synthesis, Properties and Applications)

Journal of Renewable Materials 2023, 11(6), 2941-2951. https://doi.org/10.32604/jrm.2023.025723

Received 27 July 2022; Accepted 30 September 2022; Issue published 27 April 2023

Abstract

Plasma-assisted ball milling was carried out on the Al+C₃H₆N₆ system and Al+C₄H₄N₄ system, respectively. The phase structure, functional groups and synthesis mechanism were analyzed by XRD and FT-IR, and the differences in the synthesis process of nano-AlN with different solid nitrogen sources were discussed. The results show that C₃H₆N₆ has a stable triazine ring structure, and its chemical bond is firm and difficult to break, so AlN cannot be synthesized directly by solid-solid reaction at room temperature. However, there are a large number of nitrile groups (-CN) and amino groups (-NH2) in C₄H₄N₄ molecules. Under the combined action of plasma bombardment and mechanical energy activation, C₄H₄N₄ molecules undergo polycondensation and deamination, so that the ball milling tank is filled with a large number of active nitrogen-containing groups such as N=, ≡N, etc. These groups and ball milling activated Al can synthesize nano-AlN at room temperature, with a conversion rate of 92%. SEM, DSC/TG analysis showed that the powder obtained by ball milling was formed by soft agglomeration of many fine primary particles about 50–80 nm. The surface morphology of the powder was loose and porous, and it had strong activity. After annealing at 800°C, the conversion rate of the Al+C₄H₄N₄ system reached 99%.

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Keywords

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