کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6766142 512444 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical properties of dense zirconium and tantalum diborides for solar thermal absorbers
ترجمه فارسی عنوان
خواص نوری زیرورونیوم متراکم و دی بورید تانتالیوم برای جذب کننده های حرارتی خورشیدی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Ultra-high temperature ceramics (UHTCs) are interesting materials for a large variety of applications under extreme conditions. This paper reports on the production and extensive characterization of highly dense, pure zirconium and tantalum diborides, with particular interest to their potential utilization in the thermal solar energy field. Monolithic bulk samples are produced by Spark Plasma Sintering starting from elemental reactants or using metal diboride powders previously synthesized by Self-propagating High-temperature Synthesis (SHS). Microstructural and optical properties of products obtained by the two processing methods have been comparatively evaluated. We found that pure diborides show a good spectral selectivity, which is an appealing characteristic for solar absorber applications. No, or very small, differences in the optical properties have been evidenced when the two investigated processes adopted for the fabrication of dense TaB2 and ZrB2, respectively, are compared.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 91, June 2016, Pages 340-346
نویسندگان
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