The Annealing of Corundum (Ruby) in Nitrogen (N2) Air
Öz
Every
ruby produced in the world is in different qualities with its unique
characteristics. The development of ruby’s color is effective in annealing in
different atmospheres. In our work, crystal parameters, spectroscopic
properties and color changes were determined by heat-treating the newly
discovered ruby in the nitrogen atmosphere in Turkey. The annealing result in
the nitrogen atmosphere was: a-axis 0.17% and c-axis 0.25%, for R-3c: R-3c: R
a-axis 7.06%, alpha angle 5.19% and a- 0.99, c-axis increased by 0.94%. After
annealing, a large absorption peak was observed at a wavelength of 500 nm in
the UV-Vis spectrometer. The red color of the ruby was white-light-pink after
annealing. Heat treatment in the nitrogen environment caused a change in the
color of the ruby.
Anahtar Kelimeler
Kaynakça
- [1] Song C., Hang Y., Xia C., Xu J., Zhou G., “Characteristics of large-sized ruby crystal grown by temperature gradient technique”, optical Materials, 2005, 27, 699-703. [2] Boulon G., “Fifty years of advances in solid-state laser materials”, Optical Materials, 2012, 34, 499–512.
- [3] Sahoo R.K., Mohapatra B.K., Singh S.K., Mishra B.K., “Aesthetic value improvement of the ruby stone using heat treatmentand its synergetic surface study”, Applied Surface Science, 2015, 329, 23–31.
- [4] Mercier A., Rakotondrazafy M., Ravolomiandrinarivo B., “Ruby Mineralization in Southwest Madagascar”, Gondwana research, 1999, V:2, No:3, 433-438.
- [5] Achiwawanich, S., James, B.D., Liesegang, J., “XPS and ToF-SIMS analysis of natural rubies and sapphires heated in an inert (N2) atmosphere”, Applied Surface Science, 2007, 253, 6883-6891.
- [6] Achiwawanich S., Brack N., James B.D., Liesegang J., “Surface analysis of heat-treated Mong Hsu rubies”, Applied Surface Science, 2006, 252, 8646-8650.
- [7] Nassau K., “Heat treating ruby and sapphire: technical aspects”, Gems&Gemology, 1981, Fall, 121-130.
- [8] Shor R., Weldon R., “Ruby and sapphire production and distribution: A quarter century of change”, Gems&Gemology, 2009, Winter, 236-259.
- [9] Koivula J.I., IZamnwrling R. C., “A gemological look at kyocera's new synthetic star ruby”, Gems&Gemology, 1988, Winter, 237-240.
Ayrıntılar
Birincil Dil
İngilizce
Konular
Mühendislik
Bölüm
Araştırma Makalesi
Yayımlanma Tarihi
30 Eylül 2018
Gönderilme Tarihi
25 Haziran 2018
Kabul Tarihi
29 Ağustos 2018
Yayımlandığı Sayı
Yıl 2018 Cilt: 5 Sayı: 3


