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《Materials Review》 2016-10
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Study on Microstructure and Process of Ceramic Lining Prepared by Gravitational SHS

SANG Kezheng;FAN Li;GUO Ji;LI Hongwei;School of Material Science and Engineering,Chang'an University;  
The thickness of ceramic lining prepared by gravitational SHS was controlled with the preset core.The effects of the core size and amount of SiO_2 on the thickness and microstructure,and also the cooling process on the microstructure and property of the ceramic lining were investigated.The results show that the thickness of the ceramic lining increase firstly and then decrease with the increase of the core size;and the thickness increase with increasing of the amount of SiO_2 with a certain core size.To obtain a fine and dense ceramic lining,a suitable amount of SiO_2 is needed.With a high cooling rate,the solidified microstructure is fine and the hardness of the ceramic lining is high;with a low cooling rate,separation of the melts is sufficient,the microstructure of the ceramic lining is uniform,and the combination between the ceramic lining and the steel pipe is better,and thus the thermal shock resistance is good.
【Fund】: 国家青年科学基金(51202015)
【CateGory Index】: TQ174.6
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