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《Ordnance Material Science and Engineering》 2018-06
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Influence of SDBS on thermal shock resistance of ceria coating with low infrared emissivity at high temperature

WANG Lei;XU Chen;XU Guoyue;QIAN Xue;LIU Chuyang;TAN Shujuan;College of Material Science and Technology,Nanjing University of Aeronautics and Astronautics;  
The effects of SDBS content on the adhesion,thermal shock resistance and infrared emissivity of the coatings were investigated,sodium twelve alkylbenzene sulfonate(SDBS)as a surfactant was introduced via wet chemical method to encapsulate cerium oxide filler of silicate based high temperature and low emissivity coating(IRLEC)to improve thermal shock resistance of the coatings under the engineering application condition of 800℃.The results show that the thermal shock resistance of IRLEC is related to the dispersivity of filler and the porosity of the coating.With the increase of SDBS content from0 to 1%(mass fraction),the dispersity ofthe coating and the coatings porosity are enhanced.The number of thermal shock resistance is improved from 4 times of the raw sample to 17 times correspondingly.Simultaneously,the adhesion strength is enhanced from 4 level to 1 level,the infrared emissivity also decreases from 0.362 to 0.352 in the(3~5)μm waveband at600℃,which enhance the functionality and engineering performance of the coatings.
【Fund】: 国家自然科学基金青年基金(51403102);; 江苏高校优势学科建设工程资助项目(PAPD)
【CateGory Index】: TG174.4
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