Obtaining and Characterization of Vitroceram by Chemical Doped ZnO for Art Mosaic

  • I. SANDU "Al. I. Cuza" University of Iasi, Romania
  • C. BEJINARIU "Gheorghe Asachi" Technical University of Iasi, Romania
  • A. V. SANDU "Gheorghe Asachi" Technical University of Iasi, Romania
  • V. VASILACHE "Al. I. Cuza" University of Iasi, Romania
  • I. G. SANDU "Gheorghe Asachi" Technical University of Iasi, Romania
  • M. BRÂNZILĂ "Al. I. Cuza" University of Iasi, Romania
Keywords: vitroceramic material, pigment, mosaic, SEM-EDX, IR, microFTIR, TG/DTA/DTG/DSC

Abstract

This paper presents the obtaining and the characterization of ZnO doped vitroceramic, used as photo and termoresistive pigment for art mosaic. The coprecipitation involves two sequential steps, first of ions Zn2+(aq), Cr3+(aq), Co3+(aq) and Mn3+(aq), as oxihydroxides in predetermined molar reports: 98:0,6:0,7:06, followed by maturation, forced filtration and redispersion of the granules in distilled water, after which, by ion exchange is precipitated as intergranular film of Sb3+(aq) and Bi3+(aq) ions. After forced filtration and drying, the material is subjected gradually to a thermal process, according to a curve with three levels: 20-110 °C, 110-360 °C şi 360-950 °C, with a heating rate of 3 °C/min., each level keeping a constant temperature while varying between 4 and 8 h for nanostructures processes of crystalls reform. The vitroceramic was characterized by SEM-EDX, microFTIR and termic derivatography, after treatment at 110 °C and respectively 950 °C, underlining uniformity of grains and revealing their heterojonctional structure in cross-section.

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References

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Published
2010-12-15
How to Cite
1.
SANDU I, BEJINARIU C, SANDU AV, VASILACHE V, SANDU IG, BRÂNZILĂ M. Obtaining and Characterization of Vitroceram by Chemical Doped ZnO for Art Mosaic. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Dec.2010 [cited 19Dec.2024];33(4):5-4. Available from: https://gup.ugal.ro/ugaljournals/index.php/mms/article/view/2970
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Articles