کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10128408 | 1645135 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on the variable color and emissivity properties of Co doped TiO2 under temperature fluctuations
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
In this paper, Co doped TiO2 powders were prepared through solid-state reaction. The effects of sintering temperature on microstructures, morphologies, variable color and emissivity properties of the Co doped TiO2 powders were investigated in detail. The results show that Co2+ ions substitute for Ti4+ ions effectively in rutile TiO2 after heat-treating at 900â¯Â°C-1200â¯Â°C. Increasing sintering temperature from 900â¯Â°C to 1200â¯Â°C improves crystalline quality, substitution amount of Co2+ for Ti4+ and oxygen concentration of the Co doped TiO2 powders. All the Co doped TiO2 powders show reversible thermochromism, which are green at room temperature and yellow at testing temperature of â¼800â¯Â°C. Simultaneously, the maximum variation of infrared emissivity reaches to 0.332 with testing temperature changing from room temperature to 800â¯Â°C in the powders sintered at 1100â¯Â°C. The Co doped TiO2 powders are competitive materials for smart stealth compatible visible light and infrared wavebands.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 85, November 2018, Pages 254-260
Journal: Optical Materials - Volume 85, November 2018, Pages 254-260
نویسندگان
Shanshan Xiang, Guoyue Xu, Chuyang Liu, Honghan Bu, Yanting Zhang,