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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Study on the variable color and emissivity properties of Co doped TiO2 under temperature fluctuations
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 900 °C-1200 °C. Increasing sintering temperature from 900 °C to 1200 °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 ∼800 °C. Simultaneously, the maximum variation of infrared emissivity reaches to 0.332 with testing temperature changing from room temperature to 800 °C in the powders sintered at 1100 °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
نویسندگان
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