Study of the normal emissivity of molybdenum during thermal oxidation process

作者：Xu, Yihan; Li, Longfei; Yu, Kun^*; Liu, Yufang^*

来源：Journal of Applied Physics, 2018, 123(14): 145107.

DOI：10.1063/1.5017745

• NORMAL SPECTRAL EMISSIVITY
• COATINGS
• TUNGSTEN

The infrared normal spectral emissivity of the oxidized molybdenum was measured during thermal oxidation process, and the integral emissivity was calculated from the data of spectral emissivity. It is found that the surface oxidation has a remarkable effect on the spectral emissivity of molybdenum, and the spectral emissivity curves become more fluctuant with the increase in oxidation time. The integral emissivity grows exponentially with the oxidation time at 773 K, remains almost constant at 823 K, and fluctuates at 873 and 923 K. The X-ray fluorescence spectrometer, the X-ray diffraction, and the scanning electron microscopy were employed to analyze the changes in surface composition and surface morphology. The results show that the most probable reason for the variation of integral emissivity is the change in surface roughness caused by the variation in the size and shape of oxide particle on specimen surface. Published by AIP Publishing.

• 出版日期2018-4-14
• 单位河南师范大学