title: Homogeneity of ball milled ceramic powders: Effect of jar shape and milling conditions.
abstract: This paper contains data and supporting information of and complementary to the research article entitled "Effect of jar shape on high-energy planetary ball milling efficiency: simulations and experiments" (Broseghini et al.,) [1]. Calcium fluoride (CaF2) was ground using two jars of different shape (cylindrical and half-moon) installed on a planetary ball-mill, exploring different operating conditions (jar-to-plate angular velocity ratio and milling time). Scanning Electron Microscopy (SEM) images and X-Ray Powder Diffraction data (XRPD) were collected to assess the effect of milling conditions on the end-product crystallite size. Due to the inhomogeneity of the end product, the Whole Powder Pattern Model (WPPM, (Scardi, 2008) [2]) analysis of XRPD data required the hypothesis of a bimodal distribution of sizes - respectively ground (fine fraction) and less-to-not ground (coarse fraction) - confirmed by SEM images and suggested by the previous literature (Abdellatief et al., 2013) [3,4]. Predominance of fine fraction clearly indicates optimal milling conditions.
authors.affiliation: Department of Civil, Environmental & Mechanical Engineering, University of Trento, via Mesiano, 77, 38123 Trento, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Broseghini
authors.affiliation: Department of Civil, Environmental & Mechanical Engineering, University of Trento, via Mesiano, 77, 38123 Trento, Italy.
authors.forename: M
authors.initials: M
authors.lastname: D'Incau
authors.affiliation: Department of Civil, Environmental & Mechanical Engineering, University of Trento, via Mesiano, 77, 38123 Trento, Italy.
authors.forename: L
authors.initials: L
authors.lastname: Gelisio
authors.affiliation: Department of Civil, Environmental & Mechanical Engineering, Laboratory of Bio-Inspired and Graphene Nanomechanics, University of Trento, via Mesiano, 77, 38123 Trento, Italy; Center for Materials and Microsystems, Fondazione Bruno Kessler, Via Sommarive 18, 38123 Povo (Trento), Italy; School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom.
authors.forename: N M
authors.initials: NM
authors.lastname: Pugno
authors.affiliation: Department of Civil, Environmental & Mechanical Engineering, University of Trento, via Mesiano, 77, 38123 Trento, Italy.
authors.forename: P
authors.initials: P
authors.lastname: Scardi