不同变质程度煤系石墨结构特征

刘钦甫; 袁亮; 李阔; 崔先健; 余力

doi:10.3799/dqkx.2018.419

Volume 43 Issue 5

May 2018

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Liu Qinfu, Yuan Liang, Li Kuo, Cui Xianjian, Yu Li, 2018. Structure Characteristics of Different Metamorphic Grade Coal-Based Graphites. Earth Science, 43(5): 1663-1669. doi: 10.3799/dqkx.2018.419

Citation:

Liu Qinfu, Yuan Liang, Li Kuo, Cui Xianjian, Yu Li, 2018. Structure Characteristics of Different Metamorphic Grade Coal-Based Graphites. Earth Science, 43(5): 1663-1669. doi: 10.3799/dqkx.2018.419

Liu Qinfu, Yuan Liang, Li Kuo, Cui Xianjian, Yu Li, 2018. Structure Characteristics of Different Metamorphic Grade Coal-Based Graphites. Earth Science, 43(5): 1663-1669. doi: 10.3799/dqkx.2018.419

Citation:

Liu Qinfu, Yuan Liang, Li Kuo, Cui Xianjian, Yu Li, 2018. Structure Characteristics of Different Metamorphic Grade Coal-Based Graphites. Earth Science, 43(5): 1663-1669. doi: 10.3799/dqkx.2018.419

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Structure Characteristics of Different Metamorphic Grade Coal-Based Graphites

doi: 10.3799/dqkx.2018.419

College of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing 100083, China

Received Date: 2017-07-03
Publish Date: 2018-05-15

Abstract

Abstract

To reveal the change of C atom lattice arrangements in coal-based graphite, samples with different metamorphic grades from several areas, such as Shaanxi Fengxian, Hunan Xinhua and Hunan Lutang, were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and Raman spectrum (Raman). The results show that the metamorphism degree of Fengxian graphite is in the stage of super anthracite, and that of Xinhua is semi-graphite.The graphitization degree of samples from Lutang is the highest, and its structure is close to the three dimensions ordered ideal graphite, but a little of disordered domain still exists in the structure of Lutang graphite. XRD shows that the distance between C atom layers decreases with graphitization degree increasing, but the numbers of layers and the area of single layers increase. The G peak in the Raman spectrum is gradually stronger and sharper while the D peak is weaker, and the intensity ratio and area ratio of D peak and G peak are all reduced with the graphitization increasing, which demonstrates the increasing sp² planar area. The lattice images of TEM show that the graphite-like pillars were formed at first in the graphitization, and then these pillars were united laterally with each other to form the graphite lattice structure.
- coal-based graphite,
- graphitization degree,
- microstructure,
- crystallography,
- mineralogy

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References(37)

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Structure Characteristics of Different Metamorphic Grade Coal-Based Graphites

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