Mechanochemical and volume combustion synthesis of ZrB2

An investigation on the formation mechanism of nano ZrB2 powder by a magnesiothermic reaction

“…ZrB 2 has also been obtained through several other reactions, including the borothermic reduction of ZrO 2 [8,9], the carbothermic reduction of ZrO 2 and B 2 O 3 [10,11], and the reduction of ZrO 2 by boron carbide [12][13][14]. However, a literature survey revealed that the metallothermic reduction of ZrO 2 and B 2 O 3 has been producing the most interest due to its inexpensive raw materials as well as the high exothermic nature of the relevant self-sustainable reactions [15][16][17][18][19][20][21]. Although aluminum has been chosen in a few cases to reduce zirconium and boron oxides [20,21], magnesium appears to be more attractive for reducing these oxides [15][16][17][18][19] because of the feasibility of MgO leaching.…”

“…In that study, no MSR process was observed and the ZrB 2 was synthesized after 15 hours of milling, which is comparable to a normal mechanical alloying process. Akgun et al [19] also attempted to produce zirconium diboride by mechanochemical treatment of ZrO 2 -B 2 O 3 -Mg. In their study, zirconium diboride was obtained after 30 hours of milling, indicating that no MSR reaction occurred, most likely due to the low milling intensity regime used in their experiments.…”

Application of mechanochemical synthesis of advanced materials

“…Some non-oxide materials, such as ZrB 2 , WC, AlN, etc. are successfully obtained via mechanochemical reactions at argon or nitrogen atmosphere [15][16][17][18]. ZrB 2 were produced by by magnesiothermic reduction, reaction (1), via mechano-chemical process at argon atmosphere [16].…”

Microstructural Evaluation of ZrB₂/ZrO₂ Ceramic Powders Prepared by Milling-Assisted Magnesiothermic Reduction of Oxide Raw Materials

“…In recent years, low-temperature synthesis in an autoclave (Chen et al, 2004;Chen et al, 2012) and self-propagating high-temperature synthesis (SHS) (Radev and Klissurski, 2001;Khanra et al, 2008) methods have been developed to achieve ZrB 2 or ZrB 2 -based ceramic powders. Synthesis of ZrB 2 powders by high-energy ball milling derived mechanochemical reaction has been examined by a group of researchers using the starting materials of ZrO 2 , B 2 O 3 and Mg (Setoudeh and Welham, 2006;Guo et al, 2011;Akgün et al, 2011;Jalaly et al, 2013Jalaly et al, , 2014. The preparation of ZrB 2 /ZrO 2 powders was also reported by using high-energy ball milling/annealing processes and/or boro/carbothermal reduction methods (Balcı et al, 2012;Qiu et al, 2012).…”