ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
Heat Transfer Research
インパクトファクター: 0.404 5年インパクトファクター: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561

巻:
巻 51, 2020 巻 50, 2019 巻 49, 2018 巻 48, 2017 巻 47, 2016 巻 46, 2015 巻 45, 2014 巻 44, 2013 巻 43, 2012 巻 42, 2011 巻 41, 2010 巻 40, 2009 巻 39, 2008 巻 38, 2007 巻 37, 2006 巻 36, 2005 巻 35, 2004 巻 34, 2003 巻 33, 2002 巻 32, 2001 巻 31, 2000 巻 30, 1999 巻 29, 1998 巻 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018019355
pages 1445-1458

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

Deheng Shi
College of Physics and Material Science, Henan Normal University, Xinxiang 453007, China
Fenghui Zou
College of Physics and Material Science, Henan Normal University, Xinxiang 453007, China
Zunlue Zhu
College of Physics and Material Science, Henan Normal University, Xinxiang 453007, China
Jinfeng Sun
College of Physics and Material Science, Henan Normal University, Xinxiang 453007, China

要約

This work aims to model and predict the normal spectral emissivity of brass H62 at 800–1100 K during the growth of an oxide layer on the surface of specimens. During the experimental period, a specimen was completely exposed to air, so that the oxide layer could grow freely on its surface. The normal spectral emissivity was measured during a 6-h heating period at certain temperatures from 800 to 1100 K in steps of 20 K. The radiance from specimens was measured by an InGaAs detector, which worked at a wavelength of 1.5 μm with a bandwidth of 20 nm. The specimen temperature was measured by averaging the readings of two thermocouples. The observed strong oscillations of the normal spectral emissivity were examined and were confirmed to originate from the interference effect between the radiation from the oxide layer on the specimen surface and the radiation from the substrate. The uncertainties of the normal spectral emissivity and the temperature, to which only the surface oxidation contributed, range approximately from 3.3% to 15.9% and from 3.0 to 11.5 K, respectively. The variation of the normal spectral emissivity with the heating time was evaluated at a certain temperature. The variation of the normal spectral emissivity with the temperature for a given heating time is discussed. A simple functional form is derived which reproduces well the variation of the normal spectral emissivity with the heating time at a given temperature, including the strong oscillations occurring during the initial heating period.


Articles with similar content:

MODELING EFFECT OF SURFACE OXIDIZATION ON THE NORMAL EMISSIVITY OF RED COPPER T1 AT A WAVELENGTH OF 1.5 μm AND TEMPERATURE RANGE FROM 800 TO 1100 K
Heat Transfer Research, Vol.50, 2019, issue 13
Deheng Shi, Shan Sun, Jinfeng Sun, Zunlue Zhu
EXPERIMENTAL DETERMINATION OF EMISSIVITY MODELS OF STEEL 201 AT 800−1100 K DURING OXIDE LAYER GROWTH
Heat Transfer Research, Vol.49, 2018, issue 14
Deheng Shi, Jinfeng Sun, Zunlue Zhu, Wenjie Zhu
EMISSIVITY MODEL OF STEEL 316L AT 800–1100 K DURING OXIDE LAYER GROWTH ON THE SPECIMEN SURFACE
Heat Transfer Research, Vol.50, 2019, issue 7
Deheng Shi, Shan Sun, Jinfeng Sun, Zunlue Zhu
EMISSIVITY MODEL OF ALUMINUM 6063 WITH AN OXIDE FILM AT A WAVELENGTH OF 1.5 μm IN THE TEMPERATURE RANGE 800–910 K
Heat Transfer Research, Vol.49, 2018, issue 10
Deheng Shi, Jinfeng Sun, Zunlue Zhu, Wei Xing
AN EXPERIMENTAL METHOD FOR MAKING SPECTRAL EMITTANCE AND SURFACE TEMPERATURE MEASUREMENTS OF OPAQUE SURFACES
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2010, issue
Dale R. Tree, Travis J. Moore, R. Daniel Maynes, Larry L. Baxter, Matthew R. Jones