RESEARCH AND DEVELOPMENT ON ADVANCED GRAPHITE MATERIALS. VOLUME 22 - PHOTOMICROGRAPHIC TECHNIQUES FOR CARBON AND GRAPHITE
UNION CARBIDE CORP LAWRENCEBURG TN CARBON PRODUCTS DIV
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Photomicrographic techniques were used to examine the microstructure of many grades of carbon and graphite. These techniques have aided in the study of these grades and in predicting or understanding their behavior in various applications. Photomicrography has allowed identification of various materials such as cokes, graphites, pitch, within the formed article and has permitted a study of the distribution of these materials. The effect of impregnation of the graphite with pitches and resins can be more clearly defined by careful photomicrographic examination. Standard metallographic equipment can be used for such studies but preparation of the carbon and graphite requires special techniques. Mounting methods to prevent smearing or chipping of the samples during preparation and to obtain highly polished surfaces are discussed. Also described are various techniques of lighting to aid in revealing and interpreting microstructure, and different types of photographic film, plates, developers and printing papers required for showing pertinent details in the final photomicrograph.
- Inorganic Chemistry
- Geology, Geochemistry and Mineralogy