Simultaneous measurements of normal spectral emissivity by spectral radiometry and laser polarimetry at high temperatures in millisecond-resolution pulse-heating experiments: Application to molybdenum and tungsten

1996 ◽  
Vol 17 (6) ◽  
pp. 1455-1473 ◽  
Author(s):  
A. Cezairliyan ◽  
S. Krishanan ◽  
J. L. McClure
Keyword(s):  
High Temperatures ◽  
Pulse Heating ◽  
Spectral Emissivity ◽  
Normal Spectral Emissivity ◽  
Laser Polarimetry ◽  
Simultaneous Measurements ◽  
And Tungsten

scholarly journals Re-investigation of the Normal Spectral Emissivity at 684.5 nm of Solid and Liquid Molybdenum

2020 ◽  
Vol 42 (2) ◽  
Author(s):  
Alexander Eber ◽  
Peter Pichler ◽  
Gernot Pottlacher
Keyword(s):  
Liquid Phase ◽  
Pulse Heating ◽  
Spectral Emissivity ◽  
Measuring System ◽  
Normal Spectral Emissivity ◽  
The Novel

AbstractIn this work, we present normal spectral emissivity data of solid and liquid molybdenum at a wavelength of 684.5 nm. The presented results are novel measurements on molybdenum, a material, which was already measured 15 years ago by our group. The present results indicate a lower emissivity in the liquid phase. The novel measurements were done within the European Metrology Programme for Innovation and Research (EMPIR) project 17IND11 Hi-TRACE. The optimized measuring system is an ohmic pulse-heating apparatus combined with microsecond Division of Amplitude polarimetry.

MODELING THE NORMAL SPECTRAL EMISSIVITY OF BRASS H62 AT 800–1100 K DURING OXIDE LAYER GROWTH

2018 ◽  
Vol 49 (15) ◽  
pp. 1445-1458
Author(s):  
Deheng Shi ◽  
Fenghui Zou ◽  
Zunlue Zhu ◽  
Jinfeng Sun
Keyword(s):  
Oxide Layer ◽  
Spectral Emissivity ◽  
Layer Growth ◽  
Normal Spectral Emissivity

Study of the normal spectral emissivity of tungsten between 170 and 500 °C by a single-wavelength infrared thermometer

2021 ◽  
Vol 173 ◽  
pp. 112848
Author(s):  
Shuangbao Shu ◽  
Ziyi Wang ◽  
Huajun Liang ◽  
Yuzhong Zhang ◽  
Chengliang Pan ◽  
...  
Keyword(s):  
Spectral Emissivity ◽  
Normal Spectral Emissivity ◽  
Infrared Thermometer

Investigation of the effects of Ni-based alloy K465 on the normal spectral emissivity during oxidation

2016 ◽  
Vol 78 ◽  
pp. 214-222 ◽  
Author(s):  
Shunan Zhao ◽  
Xunfeng Li ◽  
Xiaoming Zhou ◽  
Keyong Cheng ◽  
Xiulan Huai
Keyword(s):  
Spectral Emissivity ◽  
Normal Spectral Emissivity

scholarly journals Normal spectral emissivity of liquid Al-Ti binary alloys

2020 ◽  
Vol 48 (5-6) ◽  
pp. 423-438
Author(s):  
JUERGEN BRILLO ◽  
JOHANNA J. WESSING ◽  
HIDEKAZU KOBATAKE ◽  
HIROYUKI FUKUYAMA
Keyword(s):  
Temperature Dependence ◽  
Reasonable Agreement ◽  
Spectral Emissivity ◽  
Liquid System ◽  
Normal Spectral Emissivity ◽  
Binary Liquid System ◽  
Binary Liquid ◽  
Electrical Resistivities ◽  
Existing Data ◽  
Good Agreement

The normal spectral emissivity ε of four compositions in the Al-Ti binary liquid system was measured in dependence of the wavelength and temperature. It was found that all compositions show negligible temperature dependence. At a wavelength of 940 nm, the emissivity amounts to 0.37, 0.40, 0.32, and 0.31 for Ti, Al20Ti80, Al50Ti50, and Al70Ti30, respectively. The dependence of the emissivity on composition is in good agreement with literature data of binary and multi-component Al-Ti-based alloys. Using the classical Drude model, electrical resistivities are predicted for the Al-Ti system from the measured emissivities. Comparison with existing data from literature for Al show reasonable agreement.

scholarly journals Composition Dependence of Normal Spectral Emissivity of Liquid Ni–Al Alloys

2020 ◽  
Author(s):  
Masayoshi Adachi ◽  
Yuji Yamagata ◽  
Manabu Watanabe ◽  
Sonoko Hamaya ◽  
Makoto Ohtsuka ◽  
...  
Keyword(s):  
Composition Dependence ◽  
Spectral Emissivity ◽  
Al Alloys ◽  
Normal Spectral Emissivity
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