| HOU Zhi-qing,LIU Dong-zhou,KANG Yan-shuang.Impact of Coating Amount on the Composite Encapsulation Effect of Strontium Aluminate[J],43(2):29-31,65 |
| Impact of Coating Amount on the Composite Encapsulation Effect of Strontium Aluminate |
| Received:October 22, 2013 Revised:December 12, 2013 |
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| DOI： |
| KeyWord:strontium aluminate encapsulation SiO2film Al2O3 film |
| Author | Institution |
| HOU Zhi-qing |
College of Science, Agricultural University of Hebei, Baoding , China |
| LIU Dong-zhou |
College of Science, Agricultural University of Hebei, Baoding , China |
| KANG Yan-shuang |
College of Science, Agricultural University of Hebei, Baoding , China |
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| Abstract: |
| Objective Composite coating treatment was conducted for strontium aluminate, in order to improve the hydrolytic resistance of fluorescent powder. Methods Liquid hydrolysis method was used to coat the surface of strontium aluminate with SiO2/Al2O3 film, which was then analyzed for water resistance, luminescence performance and morphology. The impact of the coating amount on the encapsulation effect was studied. Results The coating amount showed very important impact on the encapsulation effect. When the film layer was too thin,the water-resistance of the fluorescent powder was limited; when the film layer was too thick,the luminescence of the fluorescent powder was limited. Conclusion Good samples could be obtained if the mass ratio of SiO2and Al2O3 in strontium aluminate could be controlled at around 5% . |
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