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Correlation Between Chemical Composition of Silver Alloys and Photothermal Radiometry Signals

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Abstract

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.

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Authors and Affiliations

  1. Universidad Tecnológica de Querétaro, Avenue Pie de la Cuesta S/N, Sn. Pedrito Peñuelas, Quéretaro, QRO, Mexico

    I. Rojas-Rodríguez & R. Velázquez-Hernández

  2. Centro de Investigación e Innovación Tecnológica del Instituto Politécnico Nacional, Cerrada CECATI s/n, Santa Catarina, 02250, Mexico, DF, Mexico

    D. Jaramillo-Vigueras

  3. Instituto Tecnológico de Querétaro, Avenida Tecnológico S/N, 76000, Quéretaro, QRO, Mexico

    M. L. Mendoza-López

  4. Departamento de Nanotecnología, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Campus Juriqulla, Apartado Postal 1-1010, Quéretaro, QRO, Mexico

    M. Millan-Malo & M. E. Rodíguez-García

Authors
  1. I. Rojas-Rodríguez
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  2. R. Velázquez-Hernández
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  3. D. Jaramillo-Vigueras
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  4. M. L. Mendoza-López
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  5. M. Millan-Malo
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  6. M. E. Rodíguez-García
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Correspondence to M. E. Rodíguez-García.

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Rojas-Rodríguez, I., Velázquez-Hernández, R., Jaramillo-Vigueras, D. et al. Correlation Between Chemical Composition of Silver Alloys and Photothermal Radiometry Signals. Int J Thermophys 33, 2382–2389 (2012). https://doi.org/10.1007/s10765-012-1334-6

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  • DOI: https://doi.org/10.1007/s10765-012-1334-6

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