Synthesis & Characterization of CaB4O7 Powder by Solid-State Reaction

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SOLGI S.; TAFRESHI M.J.; SASANI GHAMSARI M.

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Paper Information

Journal: ADVANCED MATERIALS IN ENGINEERING (ESTEGHLAL) Year:2019 | Volume:38 | Issue:1 Page(s): 65-74

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Title

Synthesis & Characterization of CaB4O7 Powder by Solid-State Reaction

Author(s)

SOLGI S. | TAFRESHI M.J. | SASANI GHAMSARI M. | Issue Writer Certificate

Keywords

Calcium tetraborate (CaB4O7)Q1

Solid-state reactionQ1

Metal-borateQ1

Phase diagramQ1

Anionic groupsQ1

Abstract

The synthesis of calcium tetraborate was investigated in a temperature ranging from 800℃ to 900℃ using the solidstate reaction method. The synthesis was done using ammonium tetraborate tetrahydrate as the source of boron. At temperatures of 800 ℃ and 880 ℃ , the mixed phases from different compounds were formed. At the optimum temperature of 840℃ , the mixed phase was only composed of meta and tetraborate phases. A 2wt% excess of ammonium tetraborate tetrahydrate led to the calcium tetraborate phase formation. X-ray diffraction analysis (XRD) confirmed the monoclinic structure at the optimum temperature of 840℃ and by 2wt% excess of ammonium tetraborate tetrahydrate. Formation of BO3 and BO4 units in calcium tetraborate anionic group was tested by Fourier transform infrared (FTIR) and Raman spectroscopy. Elemental composition and morphology of the prepared sample were studied by Field emission scanning electron microscopy (FE-SEM). The stoichiometry of the prepared powders was almost the same as the theoretical amounts, and powder particles exhibited some monoclinic characteristics.

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APA: Copy

SOLGI, S., TAFRESHI, M.J., & SASANI GHAMSARI, M.. (2019). Synthesis & Characterization of CaB4O7 Powder by Solid-State Reaction. ADVANCED MATERIALS IN ENGINEERING (ESTEGHLAL), 38(1 ), 65-74. SID. https://sid.ir/paper/163243/en

Vancouver: Copy

SOLGI S., TAFRESHI M.J., SASANI GHAMSARI M.. Synthesis & Characterization of CaB4O7 Powder by Solid-State Reaction. ADVANCED MATERIALS IN ENGINEERING (ESTEGHLAL)[Internet]. 2019;38(1 ):65-74. Available from: https://sid.ir/paper/163243/en

IEEE: Copy

S. SOLGI, M.J. TAFRESHI, and M. SASANI GHAMSARI, “Synthesis & Characterization of CaB4O7 Powder by Solid-State Reaction,” ADVANCED MATERIALS IN ENGINEERING (ESTEGHLAL), vol. 38, no. 1 , pp. 65–74, 2019, [Online]. Available: https://sid.ir/paper/163243/en

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