Synthesis of a NiTi2-AlNi-Al2O3 nanocomposite by mechanical alloying and heat treatment of Al-TiO2-NiO

Reza Beygi; Majid Zarezadeh Mehrizi; Hossein Mostaan; Mahdi Rafiei; Ahmadreza Abbasian

doi:10.1007/s12613-019-1743-7

Volume 26 Issue 3

Mar. 2019

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文章导航 > 矿物冶金与材料学报（英文） > 2019 > 26(3): 345-349

Reza Beygi, Majid Zarezadeh Mehrizi, Hossein Mostaan, Mahdi Rafiei, and Ahmadreza Abbasian, Synthesis of a NiTi₂-AlNi-Al₂O₃ nanocomposite by mechanical alloying and heat treatment of Al-TiO₂-NiO, Int. J. Miner. Metall. Mater., 26(2019), No. 3, pp. 345-349. https://doi.org/10.1007/s12613-019-1743-7

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Reza Beygi, Majid Zarezadeh Mehrizi, Hossein Mostaan, Mahdi Rafiei, and Ahmadreza Abbasian, Synthesis of a NiTi2-AlNi-Al2O3 nanocomposite by mechanical alloying and heat treatment of Al-TiO2-NiO, Int. J. Miner. Metall. Mater., 26(2019), No. 3, pp. 345-349. https://doi.org/10.1007/s12613-019-1743-7

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研究论文

Synthesis of a NiTi₂-AlNi-Al₂O₃ nanocomposite by mechanical alloying and heat treatment of Al-TiO₂-NiO

Department of Materials Engineering and Metallurgy, Faculty of Engineering, Arak University, Arak 3815688349, Iran
Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad 8514143131, Iran
Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan 9816745845, Iran

通讯作者:
Reza Beygi E-mail: r-beygi@araku.ac.ir

中文摘要

The aim of the present study was to investigate the phases formed during ball milling of Al-TiO₂-NiO. For this purpose, a mixture of Al-TiO₂-NiO with a molar ratio of 6:1:1 was used. Characterization of the milled powders by X-ray diffraction, differential thermal analysis, field-emission scanning electron microscopy, and transmission electron microscopy showed the formation of nanocrystalline NiTi₂ along with AlNi. A thermodynamical investigation confirmed that NiO was reduced by Al during ball milling, which consequently promoted TiO₂ reduction and the formation of NiTi₂. Al is capable of reducing NiO either during ball milling or at temperatures above the melting point of Al; by contrast, TiO₂ can be reduced by Al only by milling.

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Research Article

Synthesis of a NiTi₂-AlNi-Al₂O₃ nanocomposite by mechanical alloying and heat treatment of Al-TiO₂-NiO

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Abstract

Abstract

The aim of the present study was to investigate the phases formed during ball milling of Al-TiO₂-NiO. For this purpose, a mixture of Al-TiO₂-NiO with a molar ratio of 6:1:1 was used. Characterization of the milled powders by X-ray diffraction, differential thermal analysis, field-emission scanning electron microscopy, and transmission electron microscopy showed the formation of nanocrystalline NiTi₂ along with AlNi. A thermodynamical investigation confirmed that NiO was reduced by Al during ball milling, which consequently promoted TiO₂ reduction and the formation of NiTi₂. Al is capable of reducing NiO either during ball milling or at temperatures above the melting point of Al; by contrast, TiO₂ can be reduced by Al only by milling.
- mechanical alloying;
- NiTi₂-AlNi;
- nanocomposite;
- reaction mechanism

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Synthesis of a NiTi₂-AlNi-Al₂O₃ nanocomposite by mechanical alloying and heat treatment of Al-TiO₂-NiO

中文摘要

Synthesis of a NiTi₂-AlNi-Al₂O₃ nanocomposite by mechanical alloying and heat treatment of Al-TiO₂-NiO

Abstract

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