Mechanochemical Synthesis of Nanostructured MgXNi1-XO Compound by Mg-NiO Mixture | ||
| Journal of Ultrafine Grained and Nanostructured Materials | ||
| مقاله 7، دوره 50، شماره 1، شهریور 2017، صفحه 51-59 اصل مقاله (1.2 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.7508/jufgnsm.2017.01.07 | ||
| نویسندگان | ||
| Nader Setoudeh* 1؛ Cyrus Zamani2؛ Mohammad Sajjadnejad1 | ||
| 1Materials Engineering Department, Yasouj University, Yasouj, 75918-74831, Iran. | ||
| 2School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran. | ||
| چکیده | ||
| Synthesis of magnesium nickel oxide phase such as MgxNi1-xO solid solutions has been studied in this research article using mechnochmical reaction between magnesium and nickel oxide. Mixtures of magnesium powder and nickel oxide (Mg+NiO) with stoichiometric compositions were milled for different times in a planetary ball mill. Reduction reaction of nickel oxide by magnesium via a mechanically induced self-sustaining reaction (MSR) was confirmed in the XRD measurements of the as-milled samples. Formation of nanostructured magnesium nickel oxide phases (such as Mg0.4Ni0.6O or MgNiO2) was observed after isothermal heating of the 30 minutes milled samples at 1000°C where nickel phase seems to disappear in XRD patterns. The traces of phases such as Mg0.4Ni0.6O or MgNiO2 were also observed in the as-milled mixtures. Therefore, the XRD results of the as-milled samples suggested that the formation of magnesium nickel oxide phases could be possible even after prolonged milling. The XRD and SEM results of both as-milled and isothermally heated samples indicated that the crystallite size and particle size of the final products reached to nanoscale after milling. Morphological and compositional evolution of the samples after heat treatment was monitored through SEM imaging and elemental analyses. The results confirmed that the composition of final product is close to Mg0.4Ni0.6O compound. | ||
| کلیدواژهها | ||
| Ball milling؛ MgxNi1-xO؛ Magnesium nickel oxide؛ Mechanically-induced self-sustaining reaction (MSR) | ||
| مراجع | ||
|
| ||
|
آمار تعداد مشاهده مقاله: 2,552 تعداد دریافت فایل اصل مقاله: 1,929 |
||