Academic Journal
Accurately Measuring the Infrared Spectral Emissivity of Inconel 601, Inconel 625, and Inconel 718 Alloys during the Oxidation Process
| العنوان: | Accurately Measuring the Infrared Spectral Emissivity of Inconel 601, Inconel 625, and Inconel 718 Alloys during the Oxidation Process |
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| المؤلفون: | Longfei Li, Fayu Wang, Jiaying Gao, Kun Yu, Lan Wang, Yufang Liu |
| المصدر: | Sensors, Vol 24, Iss 18, p 5906 (2024) |
| بيانات النشر: | MDPI AG, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Chemical technology |
| مصطلحات موضوعية: | infrared spectral emissivity, measurement accuracy, nickel-based alloys, surface temperature correction, low thermal conductivity, thermal oxidation, Chemical technology, TP1-1185 |
| الوصف: | Accurate measurement of the infrared spectral emissivity of nickel-based alloys is significant for applications in aerospace. The low thermal conductivity of these alloys limits the accuracy of direct emissivity measurement, especially during the oxidation process. To improve measurement accuracy, a surface temperature correction method based on two thermocouples was proposed to eliminate the effect of thermal conductivity changes on emissivity measurement. By using this method, the infrared spectral emissivity of Inconel 601, Inconel 625, and Inconel 718 alloys was accurately measured during the oxidation process, with a temperature range of 673–873 K, a wavelength range of 3–20 μm, and a zenith angle range of 0–80°. The results show that the emissivity of the three alloys is similar in value and variation law; the emissivity of Inconel 718 is slightly less than that of Inconel 601 and Inconel 625; and the spectral emissivity of the three alloys strongly increases in the first hour, whereafter it grows gradually with the increase in oxidation time. Finally, Inconel 601 has a lower emissivity growth rate, which illustrates that it possesses stronger oxidation resistance and thermal stability. The maximum relative uncertainty of the emissivity measurement of the three alloys does not exceed 2.6%, except for the atmospheric absorption wavebands. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 24185906 1424-8220 |
| Relation: | https://www.mdpi.com/1424-8220/24/18/5906; https://doaj.org/toc/1424-8220 |
| DOI: | 10.3390/s24185906 |
| URL الوصول: | https://doaj.org/article/fa5bdfe42e694acdaa6a4718d74f3041 |
| رقم الانضمام: | edsdoj.fa5bdfe42e694acdaa6a4718d74f3041 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 24185906 14248220 |
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| DOI: | 10.3390/s24185906 |