Abstract
The weight loss of isotropic high-density graphite products as a result of oxidation was measured at different temperatures under a constant flow of dried air: at 550 °C for 24 h under an air flow of 4 L min-1, at 700 °C for 2.5 h under 4 L min-1, and at 1200 °C for 1 h under 2 L min-1. By observing the changes in the surface and cross-section of the specimen with oxidation, the weight loss is discussed in relation to the bulk density and whether a purification process was included during the graphite production. At 550 °C, oxidation even occurred inside the block and was markedly accelerated by the presence of metallic impurities, leaving small etch pits with a round cross-section. Weight loss on graphite products without a purification process was 10∼100 times larger than that on products after purification. The weight loss at 1200 °C could be related to the bulk density for all graphite samples, with or without purification.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.