Abstract
High aspect ratio 2M-wollastonite particles were prepared using a flux growth process, in which a unidirectional temperature gradient was established in the melt. The one-dimensional heat transfer caused the crystals to display clear cellular structure. The measured cellular growth rate decreased from ∼12 to 8 μm s− 1 within 20 min of crystallisation time. However, the primary arm spacing remained nearly constant at ∼7.5 μm. B2O3 can significantly lower the melting point of the mixture, which made the handling of the molten silicate mixtures easier. The cellular/dendritic structures were maintained up to a maximum B2O3 content of 20 wt-%. The primary arm spacing increased from ∼8 μm at 8 wt-% B2O3 to ∼40 μm at 20 wt-% B2O3. The corresponding mean aspect ratio of 2M-wollastonite particles decreased from ∼12:1 (a high aspect ratio grade) at 8 wt-% B2O3 to ∼4:1 (a low aspect ratio grade) at 20 wt-% B2O3.
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.
