PREPARATION OF NANO-STRUCTURAL AL2O3-TIB2 IN-SITU COMPOSITE USING MECHANICALLY ACTIVATED COMBUSTION SYNTHESIS FOLLOWED BYINTENSIVE MILLING

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TAHERZADEH MOUSAVIAN R.; SHARAFI S.; SHARIAT M.H.

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Journal Paper

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Journal: Iranian Journal of Materials Science and Engineering Year:2011 | Volume:8 | Issue:2 Page(s): 1-9

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Title

PREPARATION OF NANO-STRUCTURAL AL2O3-TIB2 IN-SITU COMPOSITE USING MECHANICALLY ACTIVATED COMBUSTION SYNTHESIS FOLLOWED BYINTENSIVE MILLING

Author(s)

TAHERZADEH MOUSAVIAN R. | SHARAFI S. | SHARIAT M.H. | Issue Writer Certificate

Keywords

CERAMIC MATRIX COMPOSITE

COMBUSTION SYNTHESIS

X-RAY ANALYSIS

MILLING

Abstract

Nano-structural synthesized materials can be fabricated utilizing intensive MILLING after COMBUSTION SYNTHESIS. The Al2O3-TiB2 ceramic composite has been synthesized by aluminothermic reactions between Al, Ti (TiO2), and B (B2O3 or H3BO3). Boric acid (H3BO3) is less expensive than boron oxide, and after being dehydrated at 200oC, boron oxide will be obtained. In this study, Al, TiO2, and boric acid were used as the starting materials to fabricate an Al2O3-TiB2 ceramic composite. After mechanical activation and thermal explosion processes, intensive MILLING was performed for 5, 10, and 20 h to assess the formation of a nano-structural composite. The X-ray phase analysis of the as-synthesized sample showed that considerable amounts of the remained reactants incorporated with the TiO phase were present in the XRD pattern. The results showed that the average crystallite size for alumina as a matrix were 150, 55 and 33 nm, after 5 h, 10 h, and 20 h of intensive MILLING, respectively. The SEM microstructure of the as-milled samples indicated that increasing the MILLING duration after COMBUSTION SYNTHESIS causes a significant reduction in the particle size of the products, which leads to an increase in the homogeneity of particles size. A significant increase in the micro hardness values of the composite powders was revealed after intensive MILLING process.

Cites

EFFECT OF ALUMINA\TITANIUM DIBORIDE NANO-COMPOSITE SYNTHESIS METHOD ON SINTERING BEHAVIOUR AND PROPERTIES OF SINTERED SAMPLES

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APA: Copy

TAHERZADEH MOUSAVIAN, R., SHARAFI, S., & SHARIAT, M.H.. (2011). PREPARATION OF NANO-STRUCTURAL AL₂O₃-TIB₂ IN-SITU COMPOSITE USING MECHANICALLY ACTIVATED COMBUSTION SYNTHESIS FOLLOWED BYINTENSIVE MILLING. IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING, 8(2), 1-9. SID. https://sid.ir/paper/276780/en

Vancouver: Copy

TAHERZADEH MOUSAVIAN R., SHARAFI S., SHARIAT M.H.. PREPARATION OF NANO-STRUCTURAL AL₂O₃-TIB₂ IN-SITU COMPOSITE USING MECHANICALLY ACTIVATED COMBUSTION SYNTHESIS FOLLOWED BYINTENSIVE MILLING. IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING[Internet]. 2011;8(2):1-9. Available from: https://sid.ir/paper/276780/en

IEEE: Copy

R. TAHERZADEH MOUSAVIAN, S. SHARAFI, and M.H. SHARIAT, “PREPARATION OF NANO-STRUCTURAL AL₂O₃-TIB₂ IN-SITU COMPOSITE USING MECHANICALLY ACTIVATED COMBUSTION SYNTHESIS FOLLOWED BYINTENSIVE MILLING,” IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING, vol. 8, no. 2, pp. 1–9, 2011, [Online]. Available: https://sid.ir/paper/276780/en

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