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- W2088896318 abstract "Scanning electron microscopy (SEM) has grown to be a mature analytical technique. However, its use in coal science and technology can be more widely expanded. This paper is a summary showing how SEM-EDX was applied in such diverse fields as geology and the power industry. As reflected light microscopy, SEM is suited to the identification of textural changes in coal conversion products. However, in contrast with reflected light microscopy, SEM does not require sample polishing. An advantage for many applications is that X-ray micro-analysis gives information on the temperature history of heated coal. These features make SEM with energy dispersive X-ray analysis (EDX) a valuable tool in studies of industrial and geological samples. The paper gives examples where SEM has been successfully applied. Natural coke samples were fractured to study heating effects on coal and mineral matter. Pyrite was used as a geological thermometer, showing that 750 °C was the maximum temperature reached near the magmatic intrusion. High temperature combustion chars were analysed as-received, without polishing. Whole particles as seen by SEM gave more information about the combustion process than the polished blocks used in optical microscopy. This is because the effects of burn-off are more visible from the outer surface than from the internal structure." @default.
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- W2088896318 title "Coke forms in nature and in power utilities: interpretation with SEM" @default.
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- W2088896318 doi "https://doi.org/10.1016/0016-2361(94)90273-9" @default.
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