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Saturday, October 10, 2020 | History

2 edition of Reflectance and emittance of spectrally selective titanium and zirconium nitrides found in the catalog.

Reflectance and emittance of spectrally selective titanium and zirconium nitrides

Robert Blickensderfer

Reflectance and emittance of spectrally selective titanium and zirconium nitrides

by Robert Blickensderfer

  • 385 Want to read
  • 19 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in [Washington] .
Written in English

    Subjects:
  • Solar heating,
  • Titanium -- Spectra,
  • Zirconium,
  • Nitrides

  • Edition Notes

    Bibliography: p. 23-24

    Statementby R. Blickensderfer, R. L. Lincoln, and D. K. Deardorff ; Albany Metallurgy Research Center
    SeriesReport of investigations - Bureau of Mines ; 8167
    ContributionsLincoln, Russell L., jt. auth, Deardorff, Donald K., jt. auth, United States. Bureau of Mines
    The Physical Object
    Pagination[3], 24 p. :
    Number of Pages24
    ID Numbers
    Open LibraryOL14914699M

    Attenuated Total Reflectance Spectroscopy of Polymers: Theory and Practice (Polymer Surfaces and Interfaces Series) [Urban, Marek W.] on *FREE* shipping on qualifying offers. Attenuated Total Reflectance Spectroscopy of Polymers: Theory Author: Marek W. Urban. Spectral Reflectance. Different surface features reflect and absorb the sun's electromagnetic radiation in different ways. The reflectance properties of an object depend on the material and its physical and chemical state, the surface roughness as well as the angle of the sunlight. The reflectance of a material also varies with the wavelength.

    Spectral reflectance of a representative solar selective coating based on MoSi 2 –Si 3 N 4 cermet measured af and h of vacuum annealing at °C. The wavelength measured (–30, nm) is the whole UV–vis–IR range of interest for CSP applications, covering solar irradiance and the black body emission at operating Cited by: 1. " Rapid field testing of low-emittance coated glazings for product verification." ASHRAE/DOE/BTECC Conference, Thermal Performance of the Exterior Envelopes of Buildings VII. .

    COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. Spectralon Reflectance Material gives the highest diffuse reflectance of any known material or coating over the UV-VIS-NIR region of the spectrum. In-house machining allows samples to be created quickly and easily, and modified throughout the design, prototyping and testing process. This manufacturing flexibility means low or high volume.


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Reflectance and emittance of spectrally selective titanium and zirconium nitrides by Robert Blickensderfer Download PDF EPUB FB2

Reflectance and emittance of spectrally selective titanium and zirconium nitrides [Robert. Blickensderfer] on *FREE* shipping on qualifying offers.

Reflectance and emittance of spectrally selective titanium and zirconium nitrides. [Washington]: U.S. Dept. of the Interior, Bureau of Mines, (OCoLC) Online version: Blickensderfer, Robert. Reflectance and emittance of spectrally selective titanium and zirconium nitrides.

[Washington]: U.S. Dept. of the Interior, Bureau of Mines. Spectrally selective solar absorbers were prepared by depositing a semiconductor film on a reflective base.

Either zirconium compounds, or similar titanium compounds, or pure silicon were applied over a silver film. The zirconium-type absorber films were prepared by reactively sputtering or by oxidation of pure zirconium films in by: 5. Reflectance and emittance of spectrally selective titanium and zirconium nitrides / ([Washington]: U.S.

Dept. of the Interior, Bureau of Mines, []), by Robert Blickensderfer, Donald K. Deardorff, Russell L. Lincoln, and United States.

Bureau of Mines (page images at HathiTrust). Theory of Reflectance and Emittance Spectroscopy - by Bruce Hapke January One of the objectives of studying a planet by reflectance is to infer various properties of the surface by inverting a set of remote measurements.

In the laboratory, the objective of a reflectance measurement is usually to determine the spectral absorption. Reflectance and emittance spectroscopy are increasingly important tools in remote sensing and have been employed in most recent planetary spacecraft missions.

They are primarily used to measure properties of disordered materials, especially in the interpretation of remote observations of the surfaces of the Earth and other terrestrial : Bruce Hapke.

Reflectance spectroscopy is the investigation of the spectral composi­ tion of surface-reflected radiation with respect to its angularly dependent intensity and the composition of the incident primary radiation. Two limiting cases are important: The first concerns regular (specular) reflection fromBrand: Springer-Verlag Berlin Heidelberg.

Figure 1 shows reflectance versus wave length for three thickness of iron carbide on bulk copper substrates. The film of intermediate thickness (^85nm) has absorpt ance a ^ 80% and emittance ^ 3% at room temperature. Techniques for the measure ment of absorptance and emittance Cited by: 1.

In this study, a reduced graphene oxide–based spectrally selective absorber (rGO‐SSA) is demonstrated, which possesses a recorded low thermal emittance (≈4%) and high solar absorptance.

The silver layer assures a high net reflectance (low emittance) at those wavelengths for which the Zr or Ti compound has low absorptance. The Zr or Ti compounds exhibit spectrally selective transparency (or absorptance) changes primarily because they are by: The zirconium absorber films, with the general formula zrcxoynz, were prepared by reactively sputtering zirconium or zirconium carbide in argon with small amounts of o Reflectance and Emittance of Spectrally Selective Titanium and Zirconium Nitrides.

Authors ( k), of the solar absorber stacks were calculated from room-temperature. Spectrally selective solar absorbers were prepared by depositing a semiconductor film on a reflective base.

Either zirconium compounds, or similar titanium compounds, or pure silicon were applied. Reflectance of the surface of a material is its effectiveness in reflecting radiant energy. It is the fraction of incident electromagnetic power that is reflected at an interface. The reflectance spectrum or spectral reflectance curve is the plot of the reflectance as a function of wavelength.

Theory of reflectance and emittance spectroscopy, 2nd ed., edited by Bruce Hapke. Cambridge University Press,p. $90, hardcover (ISBN #‐0‐‐‐8). Bruce Hapke’s work on radiative transfer in particulate media has long been a cornerstone of planetary by: 3.

ADS Classic is now deprecated. It will be completely retired in October This page will automatically redirect to the new ADS interface at that point. Reflectance and emittance theory 33 z=0 Fig. The geometry of the model. (b) (C) In these equations nf is the number of particles of type j per unit volume, at is the rotationally averaged geo- metric cross-sectional area of the jth type of particle,File Size: KB.

Current solar-selective coatings do not have the stability and performance necessary to move to higher operating temperatures. The objective is to develop new, more-efficient solar-selective coatings with both high solar absorptance (α>) and low thermal emittance (ε.

Second, to ensure the comparability of the measured data from different times and conditions and eliminate errors caused by the experimental environment, we divided it by the white board reflectance because the spectral reflectance should follow the principle of proximity.

Reflectance spectra of non-stoichiometric titanium oxide, niobium oxide, and vanadium oxide Reflectance spectra of non-stoichiometric titanium oxide, niobium oxide, and vanadium oxide Authors contributing to RSC publications (journal articles, books or book chapters) do not need to formally request permission to reproduce material Cited by: Reflectance and relative emittance spectra of particulate quartz particle size separates, palagonitic soils and selected smectites have been measured and compared in the range 2 to 18 pm.

Determination of absolute emittance is discussed. The optical constants were derived by. Reflectance Spectra Obtained by Attenuated Total Reflection.

Gustav Kortüm. About this book. Introduction. Reflectance spectroscopy is the investigation of the spectral composi­ tion of surface-reflected radiation with respect to its angularly dependent intensity and the composition of the incident primary radiation.

Two limiting cases.The authors present spectral reflectance, calorimetric and grazing incidence X-ray reflection (GXR) measurements. Best coatings for applications as selective absorber in the range of T = C exhibit a solar absorptance of and a near normal emittance of at C." ASTM standards for measuring solar reflectance and infrared emittance of construction materials and comparing their steady-state surface temperatures." ACEEE Summer Study on Energy Efficiency in Buildings