Abstract
The mechanism of mechanically-induced self-propagating reaction (MSR) of scheelite with magnesium during reactive ball milling was investigated using in-situ monitoring of the vial temperature, X-ray diffraction analysis and field emission scanning electron microscopy. Temperature variations of the vial versus milling time curves showed unusual behaviors in comparison to the reported patterns in literature. It is found that the main reason for these exceptional temperature behaviors is sublimation-deposition of magnesium. X-ray diffraction patterns of milled scheelite-magnesium mixtures revealed the formation of intermediate phases during MSR. The sequence of scheelite-magnesium reaction appeared as CaWO4→ Ca3WO6 → Ca2MgWO6 → WO3-x → W. Atomic force microscopy showed that the final product contains nanosize particles that are smaller than 50nm.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
