Ethanol-Induced Flash Sintering of ZnO Ceramics at Room Temperature

Ceramic flash sintering with a strong electric field at room temperature is the most attractive method. This paper presents the flash sintering of ZnO ceramics at room temperature by the application of a 3-kV/cm electric field after a dropwise addition of ethanol. This method is simple and easy to c...

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Detalles Bibliográficos
Autores principales: Yan, Nianping, Pan, Jianbing, Deng, Zhixiang, Cai, Muliang, Zhao, Xinhao, Liu, Jieming, Wang, Xilin, Jia, Zhidong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8837074/
https://www.ncbi.nlm.nih.gov/pubmed/35160805
http://dx.doi.org/10.3390/ma15030862
Descripción
Sumario:Ceramic flash sintering with a strong electric field at room temperature is the most attractive method. This paper presents the flash sintering of ZnO ceramics at room temperature by the application of a 3-kV/cm electric field after a dropwise addition of ethanol. This method is simple and easy to control. The density of the specimen exceeded 96% after 30 s of sintering. No significant difference was observed in the initiation voltage of flash sintering with and without the dropwise addition of ethanol. Ethanol burns upon dropwise addition, causing a discharge to first occur far from the location of the dropwise addition, followed by glowing and heating up, which causes the temperature of the entire specimen to rise.

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