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Title: Metal alloy identifier

Abstract

To identify the composition of a metal alloy, sparks generated from the alloy are optically observed and spectrographically analyzed. The spectrographic data, in the form of a full-spectrum plot of intensity versus wavelength, provide the "signature" of the metal alloy. This signature can be compared with similar plots for alloys of known composition to establish the unknown composition by a positive match with a known alloy. An alternative method is to form intensity ratios for pairs of predetermined wavelengths within the observed spectrum and to then compare the values of such ratios with similar values for known alloy compositions, thereby to positively identify the unknown alloy composition.

Inventors:
 [1];  [2]
  1. Avondale, MD
  2. (Avondale, MD)
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
OSTI Identifier:
866359
Patent Number(s):
4692875
Assignee:
United States of America as represented by Secretary of (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
metal; alloy; identifier; identify; composition; sparks; generated; optically; observed; spectrographically; analyzed; spectrographic; data; form; full-spectrum; plot; intensity; versus; wavelength; provide; signature; compared; similar; plots; alloys; establish; positive; match; alternative; method; ratios; pairs; predetermined; wavelengths; spectrum; compare; values; compositions; positively; alloy composition; predetermined wavelength; metal alloy; versus wavelength; alternative method; alloy compositions; intensity ratio; /702/356/

Citation Formats

Riley, William D, and Brown, Jr., Robert D. Metal alloy identifier. United States: N. p., 1987. Web.
Riley, William D, & Brown, Jr., Robert D. Metal alloy identifier. United States.
Riley, William D, and Brown, Jr., Robert D. Thu . "Metal alloy identifier". United States. https://www.osti.gov/servlets/purl/866359.
@article{osti_866359,
title = {Metal alloy identifier},
author = {Riley, William D and Brown, Jr., Robert D.},
abstractNote = {To identify the composition of a metal alloy, sparks generated from the alloy are optically observed and spectrographically analyzed. The spectrographic data, in the form of a full-spectrum plot of intensity versus wavelength, provide the "signature" of the metal alloy. This signature can be compared with similar plots for alloys of known composition to establish the unknown composition by a positive match with a known alloy. An alternative method is to form intensity ratios for pairs of predetermined wavelengths within the observed spectrum and to then compare the values of such ratios with similar values for known alloy compositions, thereby to positively identify the unknown alloy composition.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

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