Kinetics of amorphization processes by mechanical alloying: A modeling approach

Autor:	Francesco Delogu, Giorgio Cocco
Rok vydání:	2007
Předmět:	Materials science Mechanical Engineering Kinetics Metallurgy Metals and Alloys Intermetallic Thermodynamics Kinetic energy Collision Condensed Matter::Materials Science Transformation (function) Mechanics of Materials Phenomenological model Materials Chemistry Ball mill Mechanical energy
Zdroj:	Journal of Alloys and Compounds. 436:233-240
ISSN:	0925-8388
DOI:	10.1016/j.jallcom.2006.07.029
Popis:	In mechanical treatments by ball milling, the mechanical energy is transferred to powders when these are trapped between colliding milling tools. Under such processing conditions, the number of collisions is therefore the natural quantity to which refer the kinetics of any given transformation. A statistical model is here developed to relate the transformation rate to the amount of powder trapped at each collision. The phenomenological model is applied to mechanically induced amorphization processes of intermetallic compounds and binary mixtures. Provided that accurate experimental methodologies are employed to estimate the amorphization rate and the number of collisions, the comparison between experimental and theoretical kinetic curves permits to obtain a deeper insight into the observed kinetic behavior.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d94604f6b746b130cda4ef62a848240e https://doi.org/10.1016/j.jallcom.2006.07.029 Zobrazit plný text záznamu Full Text from ScienceDirect