Correlation Between Chemical Composition of Silver Alloys and Photothermal Radiometry Signals

The development of nondestructive and noncontact techniques for evaluation of metallic materials is invaluable to metal characterization. The photothermal radiometry (PTR) amplitude and phase images of silver alloys were used to study the silver distribution in alloys rich in silver and copper for A...

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Bibliographic Details
Published in:International journal of thermophysics 2012-12, Vol.33 (12), p.2382-2389
Main Authors: Rojas-Rodríguez, I., Velázquez-Hernández, R., Jaramillo-Vigueras, D., Mendoza-López, M. L., Millan-Malo, M., Rodíguez-García, M. E.
Format: Article
Language:English
Subjects:
Classical Mechanics
Condensed Matter Physics
Industrial Chemistry/Chemical Engineering
Physical Chemistry
Physics
Physics and Astronomy
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Summary:The development of nondestructive and noncontact techniques for evaluation of metallic materials is invaluable to metal characterization. The photothermal radiometry (PTR) amplitude and phase images of silver alloys were used to study the silver distribution in alloys rich in silver and copper for Ag concentrations between 37 mass% and 92 mass%. The silver concentration was determined using inductively coupled plasma. It was found that for Ag concentrations lower than 50 mass%, the PRT signals are governed by the thermal and optical properties of copper and vice versa . It was possible to establish a good correlation between the PTR amplitude and phase signal with the Ag concentration. This means that after calibration it is possible to determine the Ag concentration using nondestructive evaluation.
ISSN:0195-928X
1572-9567
DOI:10.1007/s10765-012-1334-6