Mechanochemical Synthesis of Nanocrystalline Olivine-Type Mg2SiO4 and MgCoSiO4

Crystals

John P. Bradley¹  Jingui Xu¹  Przemyslaw Dera¹  Robert Rapp¹  Dongzhou Zhang¹  Phuong Q. H. Nguyen¹  Warren McKenzie¹ 

[1] Hawaii Institute of Geophysics and Planetology, University of Hawaii at Manoa, 1680 East-West Road, Honolulu, HI 96822, USA;

关键词: mechanochemistry;    nanocrystalline;    olivine;    mechanochemical synthesis;    X-ray powder diffraction;    forsterite;   

DOI  :  10.3390/cryst12030369

来源: DOAJ

【 摘 要 】

Nanocrystalline olivine-structured Mg₂SiO₄ and MgCoSiO₄, with an average particle size of 27 nm and 31 nm, respectively, were successfully synthesized from oxide precursors via mechanochemical methods. The two nanocrystalline products were obtained after milling for 360 min and displayed high concentrations of Mg₂SiO₄ (>94%) and MgCoSiO₄ (>95%), together with minor amounts of WC (~3%) contaminant originating as debris abraded off milling balls and chambers. The macroscopic temperature monitoring of the grinding jars during milling trials recorded a peak temperature of 75 °C. A combination of analytical techniques that included XRD, TEM, SAED, and EDS were employed for the characterization of the synthesized products.

【 授权许可】

Unknown