کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8146960 | 1524115 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modeling the effect of surface oxidation on the normal spectral emissivity of steel 316L at 1.5 μm over the temperatures ranging from 800 to 1100 K in air
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک اتمی و مولکولی و اپتیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Modeling the effect of surface oxidation on the normal spectral emissivity of steel 316L at 1.5 μm over the temperatures ranging from 800 to 1100 K in air Modeling the effect of surface oxidation on the normal spectral emissivity of steel 316L at 1.5 μm over the temperatures ranging from 800 to 1100 K in air](/preview/png/8146960.png)
چکیده انگلیسی
The effect of surface oxidation on the normal spectral emissivity of steel 316L has been modeled at 800-1100 K in air at 1.5 μm. The radiance from the specimen is received by an InGaAs photodiode detector. The specimen temperature is obtained by averaging the two platinum-rhodium thermocouples, which are welded in the front surface of specimen near the measuring area viewed by the detector. The normal spectral emissivity of steel 316L specimens is measured in air over a 6-h heating period at a definite temperature. The strong oscillations of normal spectral emissivity have been observed and discussed, which are affirmed to be connected with the thickness of oxidization layer on the specimen surface, and formed by the interference effect between the radiation stemming from the oxidization layer and the radiation from the substrate. At a given temperature, the variation of normal spectral emissivity with the heating time abides by an analytical model. And at a definite heating time, the variation of normal spectral emissivity with the temperature also follows the same functional form. The uncertainty of normal spectral emissivity contributed only by the surface oxidation is about 3.7-15.0%, and the corresponding uncertainty of temperature yielded only by the surface oxidization is about 4.1-11.7 K. The conclusion is that the analytic model used here can well reproduce the behaviors of normal spectral emissivity except for the strong oscillation occurring in the initial heating period.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Infrared Physics & Technology - Volume 71, July 2015, Pages 370-377
Journal: Infrared Physics & Technology - Volume 71, July 2015, Pages 370-377
نویسندگان
Deheng Shi, Fenghui Zou, Zunlue Zhu, Jinfeng Sun,