SYNTHESIS AND CHARACTERIZATION OF α-AL2O3 NANOCRYSTALLINES FROM γ-ALUMINA MICRON POWDER BY USING HIGH ENERGY MECHANICAL MILLING METHOD

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BODAGHI M.; MIRHABIBI A.R.; TAHRIRI M.R.; HAZRATI F.

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Journal: NANOMATERIALS (JOURNAL OF NANOCOMPOSITE MATERIALS RESEARCH) Year:2011 | Volume:2 | Issue:6 Page(s): 113-118

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Title

SYNTHESIS AND CHARACTERIZATION OF α-AL2O3 NANOCRYSTALLINES FROM γ-ALUMINA MICRON POWDER BY USING HIGH ENERGY MECHANICAL MILLING METHOD

Author(s)

BODAGHI M. | MIRHABIBI A.R. | TAHRIRI M.R. | HAZRATI F. | Issue Writer Certificate

Keywords

PHASE TRANSITIONQ3

MECHANICAL MILLINGQ3

α-ALUMINAQ3

γ-ALUMINAQ3

Abstract

In this research, the results obtained from studying the PHASE TRANSITION of g-alumina (g-Al2O3) to a-Alumina (a-Al2O3) during intense mechanical activation in high-energy ball milling are presented. The powder samples were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), differential thermal and thermogravimetric analyses (TG-DTA). With respect to the results achieved from above analyses, depending on experimental conditions, the g→a-alumina transition through d- and q-phases, can be initiated. Also it was detected that the pure g-alumina phase showed great stability and no transformation to any other phase after a long milling time (30 hours). On the other hand, g-alumina, which contained a small amount of the a-Alumina phase, showed a gradual PHASE TRANSITION from g-alumina to a-alumina in milling. The PHASE TRANSITION mechanism during milling is nucleation and growth which is promoted by the a-alumina seed.

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APA: Copy

BODAGHI, M., MIRHABIBI, A.R., TAHRIRI, M.R., & HAZRATI, F.. (2011). SYNTHESIS AND CHARACTERIZATION OF α-AL₂O₃ NANOCRYSTALLINES FROM γ-ALUMINA MICRON POWDER BY USING HIGH ENERGY MECHANICAL MILLING METHOD. NANOMATERIALS (JOURNAL OF NANOCOMPOSITE MATERIALS RESEARCH), 2(6), 113-118. SID. https://sid.ir/paper/185858/en

Vancouver: Copy

BODAGHI M., MIRHABIBI A.R., TAHRIRI M.R., HAZRATI F.. SYNTHESIS AND CHARACTERIZATION OF α-AL₂O₃ NANOCRYSTALLINES FROM γ-ALUMINA MICRON POWDER BY USING HIGH ENERGY MECHANICAL MILLING METHOD. NANOMATERIALS (JOURNAL OF NANOCOMPOSITE MATERIALS RESEARCH)[Internet]. 2011;2(6):113-118. Available from: https://sid.ir/paper/185858/en

IEEE: Copy

M. BODAGHI, A.R. MIRHABIBI, M.R. TAHRIRI, and F. HAZRATI, “SYNTHESIS AND CHARACTERIZATION OF α-AL₂O₃ NANOCRYSTALLINES FROM γ-ALUMINA MICRON POWDER BY USING HIGH ENERGY MECHANICAL MILLING METHOD,” NANOMATERIALS (JOURNAL OF NANOCOMPOSITE MATERIALS RESEARCH), vol. 2, no. 6, pp. 113–118, 2011, [Online]. Available: https://sid.ir/paper/185858/en

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