Microstructure Characteristics of the Black-Glazed Shreds Excavated from the Qingliangsi Kiln

Abstract:

The black-glazed shreds from Qingliangsi kiln were studied. The glaze and body micro- structures, compositions and crystal phases were observed and analyzed by field emission scanning electron, microscope multiple functions electron probe-energy spectrum instrument and field emission transmission electron microscope. The iron oxide crystal in oil spot was mainly the ε-Fe₂O₃ in the orientation of the zone axis [001], and also few content of ε-Fe₂O₃ in the orientation of the zone axis [412]. The brown oil spots on the glaze surface were aggregations of a great deal of iron oxide hematite crystals. Bodies of black-glazed shreds have high Al₂O₃ (26.47 % ~ 30.48%) and low SiO₂ (62.77% ~ 66.20%), which pertained to the typical recipe of north porcelain bodies. The glaze are attributed to calcium-alkali glaze, and according to the ratio of Al₂O₃:SiO₂, it belongs to the crystallization glaze.

• Periodical: Key Engineering Materials (Volume 492)
• Pages: 112-117
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.492.112
• Online since: September 2011
• Authors: Zi Wei Liu, Zhi Gang Zhang, Hua Li, Wei Wu, Jia Jie Hua, Guo Feng Cheng, Chu Cheng Lin
• Keywords: Black-Glazed Shreds from Qingliangsi Kiln, Iron Oxide Crystallization, Oil Spot

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