Year: 2024
Type: article
Abstract: Boron nitride (BN) powders with near‐spherical particles of more than 10 µm were synthesized by templated carbothermal reduction and nitridation. The effects of processing factors, such as raw material mixing methods, C/B 2 O 3 molar ratios, and carbon templates, were systematically studied, and the reaction mechanism was discussed. The experimental results showed that the integrity and morphology of the carbon templates was usually destroyed during ball milling or grinding, but preserved during magnetic stirring. The morphology of synthesized BN particles depended on the C/B 2 O 3 molar ratio in starting reactant mixtures and gradually changed from sheet‐like to near‐spherical shape with decreasing C/B 2 O 3 molar ratio. The morphology and size of synthesized BN particles agreed with that of the carbon templates, which means that the morphology and size of synthesized BN particles can be tailored by controlling that of the carbon template. The BN near‐spherical particles synthesized in this work may be used as thermally conductive fillers for electronic packaging.
DOI: 10.1111/jace.20138
Authors: Dengke Zhao, Zhaobo Tian, Songmo Du, Shuo Zhao, Binbin Fan, Shijia Zhang, Bohan Wang, Fei Li, Wenbin Cao, Kexin Chen, Guanghua Liu
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
Awards: G1080608663, G5740473682
OpenAlex ID: W4402556713