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https://www.ias.ac.in/article/fulltext/boms/045/0092 -
Keywords
Coprecipitation ;vanadate ;titanate ;particulate properties ;rheology ;slip casting ;consistency coefficient ;flow behaviour index. -
Abstract
Cerium vanadate (CeVO$_4$) and zirconium titanate (ZrTiO$_4$) powders have been synthesized by the dicarboxylate coprecipitation method. The formation of precursors and mixed oxides was confirmed by their elementaland thermal analysis (thermogravimetric analysis–differential thermal analysis), infrared spectroscopy (Fourier transform infrared), X-ray fluorescence spectroscopy, energy-dispersive X-ray analysis and powder X-ray diffraction. X-ray analysis reveals the formation of a single-phasic CeVO$_4$ with tetragonal structure and ZrTiO$_4$ with orthorhombic structure. The morphological characteristics of these oxides were studied by field-emission scanning electron microscopy and a laserbased particle size analyzer. Different solid content and dispersants have been used to prepare various suspensions of these oxides in distilled water and ethanol. The rheological flow behaviour of the suspensions has been studied by measuring their viscosity against the increasing shear rate. The power-law model is applied to calculate consistency coefficient (k) and flow behaviour index (n). Minimum viscosities have been observed at pH = 10.6 for CeVO$_4$–water–Darvan system and at pH = 10.5 for ZrTiO4–water–polyethylene imine system.
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Graphical Abstract
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Author Affiliations
A V NAGAWADE1 A K NIKUMBH2 N J KARALE2 M B KHANVILKAR2 A S DESHPANDE2 P A NAGWADE2 3
- Dr. John Barnabas Post Graduate School for Biological Studies, Ahmednagar College, Ahmednagar 414 001, India
- Department of Chemistry, Savitribai Phule Pune University, Pune 411 007, India
- Department of Chemistry, Shri Anand College, Ahmednagar 414102, India
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Dates
- Published
- 24 May 2022
- Manuscript received
- 9 September 2022
- Accepted
- 20 November 2021
- Final version published online
- 24 May 2022
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Bulletin of Materials Science
Volume 46, 2023
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