Methodology for processing backscattered electron images. Application to Aguada archaeological paints

Josa, V. Galván; Bertolino, S.; Riveros, José A.; Castellano, G.

doi:10.1016/j.micron.2009.07.005

Cited by 9 publications

(3 citation statements)

References 46 publications

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“…Manganese is also reported in several studies using a combination of techniques (Raman spectroscopy, SEM-EDS, XRD and petrography) of ceramics from Northwestern Argentina. For example, the black pigment of pieces of Aguada Ambato y Aguada Portezuelo styles are composed of Mn and Fe rich minerals such as Hollandite and Lithiophorite respectively (c. AD 500-950; Bertolino et al 2009Bertolino et al , 2011Galvan Josa et al 2009). In another study, the red, black, and brown pigments on the exterior surface of one Aguada bowl analyzed by De La Fuente et al 2005 showed that the black pigment resulted from hematite fired in a reduced atmosphere (72% Fe) with some manganese (14%) in a coloidal clayey solution (7% aluminosilicates).…”

Section: Discussionmentioning

confidence: 99%

Los pigmentos utilizados en la pintura poscocción de vasijas de cerámica Paracas Temprano de Puerto Nuevo y las redes de intercambio de la costa y sierra surcentral del Perú durante los siglos IX-VI a.C.

Dulanto

Gonzales

Guadalupe

2019

BDA

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Durante el primer milenio a. C. aparecen en pocas cantidades botellas finamente decoradas de estilo Cupisnique Rojo Grafitado en varios sitios del Perú norcentral. El análisis petrográfico y con microscopia digital en luz reflexiva de la pasta, estudios químicos de los pigmentos y estudios estilísticos sugieren que su producción fue hecha por alfareros especializados que compartían recetas de pasta y tecnología de manufactura, pero no recursos, y que trabajaban en distintos talleres. La composición mineral y la granulometría son similares, apuntando al uso de un temperante de roca intrusiva molida o de sedimentos ricos en fragmentos de rocas intrusivas y una mineralogía derivada de cuerpos del Batolito de la costa. Por sus diseños en negro brillante pintados sobre un engobe rojo muy pulido se le dio el nombre de Rojo Grafitado, pero estudios recientes demuestran que no todo lo negro es grafito. Un análisis con microscopio electrónico de barrido (MEB-EDS) muestra que en un caso el manganeso fue utilizado como pigmento, mientras que, en otros siete casos, fueron detectados picos altos de carbono, escaso hierro y no se ve manganeso. Esto sugiere que la superficie fue carbonizada en condiciones reductoras de quema. En Kuntur Wasi, el estilo Cupisnique Grafitado fue también imitado en otras formas y variantes estilísticos.

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Section: Discussionmentioning

confidence: 99%

Los pigmentos utilizados en la pintura poscocción de vasijas de cerámica Paracas Temprano de Puerto Nuevo y las redes de intercambio de la costa y sierra surcentral del Perú durante los siglos IX-VI a.C.

Dulanto

Gonzales

Guadalupe

2019

BDA

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“…The technique is also used for microstructure characterization of compound material (Abdelhadi and Ladani ) as well as in analyzing archeological samples (Josa et al . ). Gignac et al .…”

Section: Introductionmentioning

confidence: 97%

Application of backscattered electrons in detecting and profiling voids covered by self‐supporting metallic thin film

Rajput

Verma

2014

Scanning

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Summary Locating and profiling porosity or cavities in materials science has been of great interest and importance. However, it has been a great challenge to detect and analyze these hidden cracks because of lack of efficient measurement technique. Artificial voids are created and covered by self‐supporting thin films in order to replicate a hidden crack situation. Subsequently, these hidden voids are located in the scanning electron microscope images and the backscattered electrons, which emerge from a deeper part of a material and depend on the material property (such as atomic number, atomic density, etc.), are shown to play the key role in locating these hidden voids. Detection has been done by collecting the backscattered electrons as well as the secondary electrons (produced by the backscattered electrons). The efficacy of the detection technique is presented in terms of variation in the grayscale intensity values of the scanning electron microscope images. The role of the primary beam energy and the beam dwell time in the detection efficiency is discussed. The successful demonstration of the imaging technique in profiling hidden voids shows a promising and efficient analytical technique in detecting and analyzing invisible cracks in materials. SCANNING 36:430–436, 2014. © 2014 Wiley Periodicals, Inc.

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“…BE images are quite valuable in different areas of materials characterization, their importance lying in the fact that they are widely used in a variety of scientific or technological investigations, like chemical geology, cement investigations, art and cultural heritage pieces, hard tissue characterization, etc. [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Backscattered electron images, X-ray maps and Monte Carlo simulations applied to the study of plagioclase composition in volcanic rocks

Josa

Fracchia

Castellano

et al. 2013

Spectrochimica Acta Part B: Atomic Spectroscopy

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Methodology for processing backscattered electron images. Application to Aguada archaeological paints

Cited by 9 publications

References 46 publications

Los pigmentos utilizados en la pintura poscocción de vasijas de cerámica Paracas Temprano de Puerto Nuevo y las redes de intercambio de la costa y sierra surcentral del Perú durante los siglos IX-VI a.C.

Los pigmentos utilizados en la pintura poscocción de vasijas de cerámica Paracas Temprano de Puerto Nuevo y las redes de intercambio de la costa y sierra surcentral del Perú durante los siglos IX-VI a.C.

Application of backscattered electrons in detecting and profiling voids covered by self‐supporting metallic thin film

Backscattered electron images, X-ray maps and Monte Carlo simulations applied to the study of plagioclase composition in volcanic rocks

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