Investigation on modification of ion implanted natural corundum by UV–Vis-NIR spectroscopy

© 2016 Elsevier B.V. Natural corundum, a crystalline form of aluminium oxide (Al2O3) with impure elements, is an allochromatic mineral whose color varies based on the presence of impurities in the composition. Ion implantation technology can be utilized for enhancing the optical properties of corund...

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Main Authors: U. Tippawan, T. Chulapakorn, D. Bootkul, C. Pangkason, S. Intarasiri
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/55423
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-554232018-09-05T03:13:05Z Investigation on modification of ion implanted natural corundum by UV–Vis-NIR spectroscopy U. Tippawan T. Chulapakorn D. Bootkul C. Pangkason S. Intarasiri Chemistry Materials Science Physics and Astronomy © 2016 Elsevier B.V. Natural corundum, a crystalline form of aluminium oxide (Al2O3) with impure elements, is an allochromatic mineral whose color varies based on the presence of impurities in the composition. Ion implantation technology can be utilized for enhancing the optical properties of corundum by selecting the implanted ion type leading to modification of the composition and defects. As for the appearance of corundum depending on many factors including brilliance, color, fire (light dispersion), and luster, this research attempted to find out an alternative method for improving the optical appearance and color enhancement of corundum by using ion implantation. Ion beam treatments with 70 keV nitrogen and argon ions and 23 keV oxygen ion at fluence of 1017ions/cm2were applied to ruby and sapphire from Thailand, Myanmar, Cambodia, Sri Lanka, Africa, and USA. Additionally, ion beam analysis techniques, i.e., particle-induced X-ray emission (PIXE), together with conventional gemological observations such as optical microscope and UltraViolet-Visible and Near Infrared (UV–Vis-NIR) spectroscopy were applied to understand the phenomena observed. The results revealed the possibility of color changing by ion beams resulting from variation in the ionic stage of trace elements as seen from UV–Vis-NIR absorption spectra. The advantages of ion implantation appear to be new and sustainable for improving corundum properties. 2018-09-05T02:55:36Z 2018-09-05T02:55:36Z 2016-11-25 Journal 02578972 2-s2.0-84994378114 10.1016/j.surfcoat.2016.08.028 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84994378114&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/55423
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemistry
Materials Science
Physics and Astronomy
spellingShingle Chemistry
Materials Science
Physics and Astronomy
U. Tippawan
T. Chulapakorn
D. Bootkul
C. Pangkason
S. Intarasiri
Investigation on modification of ion implanted natural corundum by UV–Vis-NIR spectroscopy
description © 2016 Elsevier B.V. Natural corundum, a crystalline form of aluminium oxide (Al2O3) with impure elements, is an allochromatic mineral whose color varies based on the presence of impurities in the composition. Ion implantation technology can be utilized for enhancing the optical properties of corundum by selecting the implanted ion type leading to modification of the composition and defects. As for the appearance of corundum depending on many factors including brilliance, color, fire (light dispersion), and luster, this research attempted to find out an alternative method for improving the optical appearance and color enhancement of corundum by using ion implantation. Ion beam treatments with 70 keV nitrogen and argon ions and 23 keV oxygen ion at fluence of 1017ions/cm2were applied to ruby and sapphire from Thailand, Myanmar, Cambodia, Sri Lanka, Africa, and USA. Additionally, ion beam analysis techniques, i.e., particle-induced X-ray emission (PIXE), together with conventional gemological observations such as optical microscope and UltraViolet-Visible and Near Infrared (UV–Vis-NIR) spectroscopy were applied to understand the phenomena observed. The results revealed the possibility of color changing by ion beams resulting from variation in the ionic stage of trace elements as seen from UV–Vis-NIR absorption spectra. The advantages of ion implantation appear to be new and sustainable for improving corundum properties.
format Journal
author U. Tippawan
T. Chulapakorn
D. Bootkul
C. Pangkason
S. Intarasiri
author_facet U. Tippawan
T. Chulapakorn
D. Bootkul
C. Pangkason
S. Intarasiri
author_sort U. Tippawan
title Investigation on modification of ion implanted natural corundum by UV–Vis-NIR spectroscopy
title_short Investigation on modification of ion implanted natural corundum by UV–Vis-NIR spectroscopy
title_full Investigation on modification of ion implanted natural corundum by UV–Vis-NIR spectroscopy
title_fullStr Investigation on modification of ion implanted natural corundum by UV–Vis-NIR spectroscopy
title_full_unstemmed Investigation on modification of ion implanted natural corundum by UV–Vis-NIR spectroscopy
title_sort investigation on modification of ion implanted natural corundum by uv–vis-nir spectroscopy
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84994378114&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/55423
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