Study of early stages of Cu–NbC nanocomposite synthesis

Effects of milling time on hardness and electrical conductivity of in situ Cu–NbC composite produced by mechanical alloying

“…A rapid decrease in average crystallite size of Cu and NbC occurs from 2 to 8 h of milling, but after 8 h of milling only a slight further decrease in crystallite size occurs as confirmed by other work [7]. This result indicates that mechanical alloying is highly effective in reducing crystallite size by increasing milling time.…”

“…The composite powder was characterized after each milling time and not subjected to further consolidation processing [1,4,7]. Little information is available regarding the effects of milling parameter on physical and mechanical properties of the in situ copper-based composite.…”

Fabrication of NbC Reinforced Low Carbon Steel by Immersing Nb(C)–Fe Powders in Steel Melt

“…During the second stage of milling, the Nb(C) and added Fe powder were trapped between colliding balls and underwent extensive deformations and fragmentations followed by cold weldings at the freshly formed surfaces, which brought a gradual formation of a lamellar mechanical bonding [14]. Finally, the MA process produced the Nb(C)-50 wt%-Fe composite powder that was added into the molten steels.…”

Peculiarities of Nano Modification Influence on Properties of Bond Cu-Fe-Co-Ni for Diamond Tool.

“…[9][10][11][12][13][14][15][16]. Согласно представлениям теории дисперсного упрочнения наночастицами наибольший эффект создается при следующих условиях: содержании упрочняющей фазы 3-15 об.%, размере частиц 10-50 нм и среднем расстоянии между ними 0,1-0,5 мкм.…”