Properties of CoO doped in glasses prepared from rice hush fly ash in Thailand
Conference proceedings article
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
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รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Ruangtaweep Y., Kaewkhao J., Kirdsiri K., Kedkaew C., Limsuwan P.
ผู้เผยแพร่: IOP Publishing
ปีที่เผยแพร่ (ค.ศ.): 2011
Volume number: 18
Issue number: SYMPOSIUM 8
นอก: 1757-8981
eISSN: 1757-899X
ภาษา: English-Great Britain (EN-GB)
บทคัดย่อ
In this work, properties of glass from local rice husk ash (RHA) in Thailand have been investigated. RHA was sintered in different temperature. Compositions and phases of RHA were analyzed by energy dispersive x-ray fluorescence spectrometer (EDXRF) and X-ray diffractometer (XRD). The glasses were melt from RHA in formula 20 Na2O : 1.0 Al2O 3 : 13 B2O3 : 6.3 CaO : 0.2 Sb 2O3 : 4.5 BaO : 55SiO2 (using RHA as a SiO 2 source) The density values of all RHA glasses are comparable and larger than glass from pure SiO2 under same glass formula and preparing condition. These results are corresponding with refractive index values. The RHA glasses showing colorless with absorption edge in ultraviolet region were obtained. The dark blue color glasses were melted from RHA with different CoO concentration. From this part, not found to be the relation of density and refractive index of glass with CoO concentration in glass matrix. From absorption spectra, the absorption peak were appeared around 600 nm, and peak intensity are increased, with increase CoO, correspond to 4A2(4F) → 4T1( 4P) state of Co2+ in tetrahedral symmetry. © 2011 Ceramic Society of Japan.
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