✦ LIBER ✦

Kinetics of mechanically induced anatase-to-rutile phase transformations under inelastic impact conditions

✍ Scribed by Emilio Napolitano; Gabriele Mulas; Stefano Enzo; Francesco Delogu

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 943 KB
Volume: 58
Category: Article
ISSN: 1359-6454
DOI: 10.1016/j.actamat.2010.03.024

No coin nor oath required. For personal study only.

✦ Synopsis

This work investigates the kinetics of the anatase-to-rutile phase transformation of TiO 2 powders during ball milling. Two elementary stages are observed, namely the transformation of anatase to the TiO 2 II phase and of this latter to rutile. Such consecutive reactions were studied under inelastic impact regimes. Based on a suitable modeling of transformation kinetics, the fraction of powder processed on average at each collision was estimated. The mass of powder involved in phase transformation and microstructural refinement processes at each collision was then worked out by a systematic variation of the powder charge inside the reactor.

📜 SIMILAR VOLUMES

Kinetics and Mechanisms of Phase Transfo

Kinetics and Mechanisms of Phase Transformations Induced by Ball-Milling in Anatase TiO2

✍ S. Bégin-Colin; T. Girot; G. Le Caër; A. Mocellin 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 332 KB

Ball-milling is a way of inducing phase transformations, chemical reactions, and changes in the reactivity of solids. It is a complex process for which several models have been developed to predict the evolution of systems and to describe its physics. These models sometimes empirically need experime

A combined experimental and numerical ap

A combined experimental and numerical approach to the kinetics of mechanically induced phase transformations

✍ Francesco Delogu 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 541 KB

Numerical simulations have been used to estimate physical quantities relevant to mechanically induced transformation processes but inaccessible via experiment. Investigations focused on the mechanical response of an ensemble of polydisperse Co powder particles subjected to densification processes ap