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Coloured Metallography of Ti-6Al-4V Alloys Using Phtalocyanine Blue

  • L. García

    Laura García Sánchez received her Ph.D. in Chemistry by the Complutense University in Madrid , being now a researcher in the group of Mechanical Technology and Archaeometallurgy . She performs Quality Control of metallic materials for industry and studies archaeological metallic artefacts.

    , C. Dietz

    Christian Dietz currently manages the Stable Isotope Ratio Mass Spectrometry Facilities at the Central Science Laboratories, University of Tasmania. Part of his ongoing research is dedicated to the development of analytical methods with potential applications in Archaeometry, Material Science and Cultural Heritage.

    , J. M. Gómez de Salazar , J. A. Martínez and A. J. Criado
Published/Copyright: March 7, 2022
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Abstract

This work presents a method to improve visualisation of metallographic structures in titanium containing alloys. After conventional selective chemical etching with Kroll’s reagent, the surface of the sample specimen is manually dyed with a phtalocyanine based lacquer. The results are highly detailed and sharp coloured images when investigated with Optical Microscopy, providing much more information compared to the grey shaded, etching only approach.

Kurzfassung

Diese Arbeit stellt ein Verfahren zur Verbesserung der Visualisierung metallographischer Strukturen in titanhaltigen Legierungen vor. Die Oberfläche wurde nach konventionellem Verfahren selektiv chemisch mit Ätzmittel nach Kroll geätzt und danach manuell mit einem Lack auf Phthalocyanin-Basis eingefärbt. Bei einer Untersuchung am Lichtmikroskop ergeben sich äußerst detailreiche und scharfe farbige Bilder, die, verglichen zu alleinigem Ätzen, bei dem lediglich Grauschattierungen hervorgebracht werden, wesentlich mehr Informationen liefern.

About the authors

L. García

Laura García Sánchez received her Ph.D. in Chemistry by the Complutense University in Madrid , being now a researcher in the group of Mechanical Technology and Archaeometallurgy . She performs Quality Control of metallic materials for industry and studies archaeological metallic artefacts.

C. Dietz

Christian Dietz currently manages the Stable Isotope Ratio Mass Spectrometry Facilities at the Central Science Laboratories, University of Tasmania. Part of his ongoing research is dedicated to the development of analytical methods with potential applications in Archaeometry, Material Science and Cultural Heritage.

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Received: 2016-03-23
Accepted: 2016-04-20
Published Online: 2022-03-07

© 2016 Carl Hanser Verlag, München

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