Synthesis and Characterization of In Situ Al-Al13Fe4-Al2O3-TiB2 Nanocomposite Powder by Mechanical Alloying and Subsequent Heat Treatment

被引：18

作者：

Jazi, E. Haghshenas ^{[1
]}

Esalmi-Farsani, R. ^{[1
]}

Borhani, Gh. ^{[2
]}

Jazi, F. Sharifian ^{[3
]}

机构：

[1] KN Toosi Univ Technol, Dept Mat Engn, Fac Mech Engn, Tehran 1999143344, Iran

[2] Malek Ashtar Univ Technol, Dept Mat Engn, Esfahan, Iran

[3] Amirkabir Univ Technol, Dept Min & Met Engn, Tehran, Iran

来源：

SYNTHESIS AND REACTIVITY IN INORGANIC METAL-ORGANIC AND NANO-METAL CHEMISTRY | 2014年 / 44卷 / 02期

关键词：

Al-TiB2; characterization; mechanical alloying; nano-; composite; synthesis; MATRIX COMPOSITES; WEAR-RESISTANCE; MICROSTRUCTURE; FABRICATION;

D O I：

10.1080/15533174.2013.768660

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Al-Al13Fe4-Al2O3-TiB2 nanocomposite powder was fabricated by mechanical alloying (MA) and subsequent heat treatment of aluminum, ferrotitanium and boron oxide as a raw material. The obtained nanocomposite powder was evaluated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Also; microhardness values of powder particles after different milling times were measured. Microhardness of this nanocomposite was found to be about 161 HV. The results of XRD showed that the nanocrystalline supersaturated solid solutions of aluminum (-Al) that formed within 30h of MA with a mean crystallite size of 12nm. The above experimental results showed that the heat-treated 30h of MA powders leads to the in situ formation of nanocrystalline TiB2 in an Al matrix with a mean crystallite size of 45nm. It was also found that after the heat treatment, moreover, the TiB2 phase, the other compounds such as Al2O3 and Al13Fe4 have been formed.

引用

页码：177 / 184

页数：8

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