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Mechanical activation assisted synthesis of pure nanocrystalline forsterite powder

“…The absence of periclase and enstatite on XRD traces indicates that during mechanical activation, a homogeneous powder mixture was achieved. This result is in contrast to previous studies which reported the formation of periclase and enstatite because of lack of homogeneity of reactants [11,20,[26][27][28]. Fig.…”

Effect of MgO-SiO2 Ratio on the Forsterite (Mg2SiO4) Precursors Characteristics Derived from Amorphous Rice Husk Silica

“…C could be assigned to the dehydration of silica and magnesium hydroxide, as supported by FTIR results and which is in agreement with the results of others 36 . The small endothermic peak at 461 ï C corresponds to amorphous phases and the endothermic peak at 658 0ï C correspond to the talc hydroxylation and its transformation to enstatite, and endothermic peak at 830 0 C due to the crystallization of forsterite formation, as supported by previous study [41][42] . In the non sintered samples (Fig.…”

Epoxide assisted sol–gel synthesis of perovskite-type LaMxFe1−xO3 (M=Ni,Co) nanoparticles

“…The different hydrolysis susceptibilities of the precursors may ultimately lead to component segregation and mixed phases in the final materials. Many works have dealt with the control of the reactivity of the different components in order to overcome this drawback [11][12][13][14]. The usage of non-alkoxide sol-gel routes, involving hydrolysis and condensation of metal salts, overcomes the problems related with the sensitivity of the precursors to moist environment, however, has still the disadvantage of the different hydrolysis susceptibilities of the individual components.…”