Effect of magnesium source on the fabrication of kotoite Mg3B2O6 ceramic
Yükleniyor...
Dosyalar
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The effect of magnesium source on the fabrication of kotoite, Mg3B2O6, ceramic has been investigated by high temperature solid-state reaction route based on the calcination of different magnesium sources, containing magnesium oxide, magnesium carbonate, magnesium sulfate, and magnesium nitrate with boric acid. The X-ray powder diffraction results showed that single-phase kotoite, Mg3B2O6, was synthesized using MgNO3.6H(2)O and 5 wt.% excess of H3BO3 powders as starting materials at 900 degrees C for 48hours. Mg3B2O6 obtained, is well crystallized, in orhorhombic crystal structure with lattice parameters of a=5.399(9), b=8.424(6), and c=4.506(5) angstrom. Jana2006 refinement of this product shows excellent fit of the experimental data with software data, GOF= 1.33. The crystallite size of the product was calculated as 40.50nm using Debye-Scherrer's equation. The existence of BO3 triangles were detected by FTIR measurements of Mg3B2O6. The thermal properties were studied in the temperature range of 20 degrees C to 1400 degrees C by TG/DTA. The results showed that thermal stability of Mg3B2O6 is detected about 1380 degrees C. Scanning electron microscopy was employed for observation of microstructure. The microstucture of obtained ceramic samples strongly depended on the magnesium source on the fabrication of Mg3B2O6 ceramic.
Açıklama
Anahtar Kelimeler
Borates, Kotoite, Nanoparticles, Synthesis, Thermal Analysis
Kaynak
International Journal Of Applied Ceramic Technology
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
15
Sayı
6
