67. Characterisation of bonded carbons by ultra thin sectioning

✍ Scribed by D Clinton; G Kaye

• Book ID: 102999160
• Publisher: Elsevier Science
• Year: 1964
• Tongue: English
• Weight: 109 KB
• Volume: 1
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(64)90357-4

✦ Synopsis

heat treated at six temperatures between 1150 and 3000°C. The following physical properties were determined on the bodies and the petroleum coke filler: apparent and air densities, BET surface areas, and crystallographic parameters. Important operating properties measured on the bodies were: reactivity to CO,, electrical resistivity, coefficient of thermal expansion, and flexural strength. At particular heat treatment temperatures, only minor differences in properties of the bodies were usually observed. This leads to two possible conclusions. One, the coal tar pitches produced binder carbons of similar properties at particular heat treatment temperatures. Two, because of the minor amount of pitch carbon present in the bodies (ca. 15 %), differences in properties of binder cokes were not sufficient to produce important differences in body properties. On the other hand, major changes in physical properties of the bodies were observed in going from baking to graphitizing temperatures.

Such changes paralleled closely in properties of the filler carbon.