کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6476912 1426210 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spectral emissivity and constant pressure heat capacity of molten nickel and rhodium measured by spectrometers combined with an electrostatic levitator
ترجمه فارسی عنوان
میزان اشباع طیفی و ظرفیت حرارتی ثابت نیکل و رودیوم ریخته گری اندازه گیری شده با طیف سنجی همراه با توزیع الکترواستاتیک
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


- Emissivity of molten Ni and Rh were measured over wide wavelength.
- Cp of Ni and Rh were also obtained.
- Emissivity of Ni and Rh show good agreements with Drude model.

Spectral emissivity and constant heat capacities of molten nickel and rhodium at their melting temperatures were measured using containerless techniques. Samples were levitated in an electrostatic levitator and the radiation intensities from the molten samples were measured with spectrometers over a wide wavelength range. The spectrometers were calibrated with a blackbody radiation furnace and the spectral hemispherical emissivity was calculated. The total hemispherical emissivity of nickel at the melting temperature calculated by integrating the spectral hemispherical emissivity was found to be 0.21, and the constant pressure heat capacity of molten nickel at the melting temperature was calculated to be 39.9 J·mol−1·K−1. The total hemispherical emissivity and the constant pressure heat capacity of rhodium at the melting temperature were measured to be 0.23 and 41.8 J·mol−1·K−1, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 103, December 2016, Pages 107-114
نویسندگان
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