Formation of ZnO/Ni0.6Zn0.4O Mixture Using Mechanical Milling of Zn-NiO
2016 年 57 巻 9 号 p. 1597-1601
詳細
2016 年 57 巻 9 号 p. 1597-1601
Mixtures of Zn-NiO with stoichiometric compositions were milled for different times in open-valve milling cups. Although the gradual reduction of nickel oxide with zinc occurred during one hour of milling, it was found that nanometric mixtures of ZnO and Ni0.6Zn0.4O appear after 72000 seconds (20 hrs) of milling with the crystallite size of Ni0.6Zn0.4O phase being about 22 nm. On the other hand, and under the flow of argon gas, narrow and intense peaks of ZnO and Ni0.6Zn0.4O were observed after isothermal heating of 1800 seconds milled samples at 1273 K. Electron microscopy observations and elemental analysis of the products confirm formation of ZnO nano-needles distributed in the nickel zinc oxide matrix.
