Dry (mechanochemical) synthesis of Y(BH4)3. For mechanochemical synthesis the vibrating mill (Testchem) and chromium steel bowl and disc were used. Substrates, YCl3 and LiBH4 were mixed in ca 1:3 molar ratio (with a 5 % excess of MBH4) and milled for ca. 60 minutes in Ar atmosphere. Milling periods of 3–5 minutes were altered with 2–5 minutes rests to avoid thermal decomposition of the products...

Purpose. Research on the process intensification of gold-bearing product hydrometallurgical processing based mechanochemical milling initial sulphide material. Methods. Mechanochemical activating (oxidation) concentrate under conditions superfine milling, sulphite-thiosulphate leaching milled after liquid phase separation. The float sample with a particle size -0.074 mm, Au content is 15.5 g/t ...

Waste Pisha sandstone (WPS) is the main damming material for check dam in Loss Plateau of northwest China. The dissolution characteristics WPS alkaline solutions were investigated as a basis studying modification materials and revealing mechanism to further study pozzolanic activity development cementitious concrete utilizing WPS. In this paper, was milled calcined at 600 °C, 700 800 respective...

Solid solutions of BiFeO 3 and BaTiO are promising lead-free piezoelectric materials, especially around the morphotropic phase boundary at 0.67BiFeO -0.33BaTiO . Still, these materials challenged by instability limited understanding processing-properties relationship. Here, we investigate mechanochemical activation use as seed particles for phase. Contrary to expectations from seeding in lead-b...

The nanosized silicon powder has been produced by reduction of silica with magnesium in an argon medium using both the mechanically activated self-propagating high-temperature synthesis and direct mechanochemical investigated X-ray phase analysis, Infrared spectroscopy, electron scanning microscopy, energy dispersive spectroscopy. optimal Mg:SiO2 ratio found to provide minimum content contamina...

ni6(n2h4)6(so4)4(oh)2(h2o)8](so4)(h2o)10 complex was prepared according to literature report. the reaction between aforementioned complex via sodium alkoxides as a reactants, were carried out in the solid state. the [ni6(n2h4)6(so4)4(oh)2(h2o)8](so4)(h2o)10 undergoes an intramolecular two electrons oxidation-reduction reaction at room temperature and metallic nickel nanoparticles (ni1-ni5) was ...

ni6(n2h4)6(so4)4(oh)2(h2o)8](so4)(h2o)10 complex was prepared according to literature report. the reaction between aforementioned complex via sodium alkoxides as a reactants, were carried out in the solid state. the [ni6(n2h4)6(so4)4(oh)2(h2o)8](so4)(h2o)10 undergoes an intramolecular two electrons oxidation-reduction reaction at room temperature and metallic nickel nanoparticles (ni1-ni5) was ...

in this work, the strontium-doped lanthanum manganite- a ceramic material- used as cathode in solid oxide fuel cells. an impression of grinding time on the structural and thermal properties of sr-doped lamno3 system with la1-xsrxmno3 (x=0.2) stoichiometric ratio was investigated. the nano crystallite lsm powder with cubic structure was prepared by varying the milling time of planetary monomill ...

Highly conductive, transparent, flexible and scalable graphene hybrid thin films with controlled domain size were successfully fabricated via a mechanochemical method, screen printing and pressure-assisted reduction process.