The Effect of the Heating Rate during Carbonization on the Porosity, Strength, and Electrical Resistivity of Graphite Blocks Using Phenolic Resin as a Binder

Autor:	Sang-Hye Lee, Jae-Hyun Kim, Woo-Seok Kim, Jae-Seung Roh
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	General Materials Science graphite block phenolic resin carbonization porosity heating rate microstructure thermal decomposition mechanical property electrical resistivity
Zdroj:	Materials; Volume 15; Issue 9; Pages: 3259
ISSN:	1996-1944
DOI:	10.3390/ma15093259
Popis:	In the present study, graphite blocks were fabricated using synthetic graphite scrap and phenolic resin, and the effect of the heating rate during carbonization on their mechanical and electrical characteristics was examined. While varying the heating rate from 1, 3, 5, and 7 to 9 °C/min, the microstructure, density, porosity, flexural strength, compressive strength, and electrical resistivity of the fabricated graphite blocks were measured. As the heating rate increased, the pores in the graphite blocks increased in size, and the shape of the gas release paths became more irregular. Overall, it was found that increases in the heating rate led to the degradation of the graphite blocks’ mechanical and electrical properties.
Databáze:	OpenAIRE
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