Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
INFLUENCE OF ACETONE AND METHANOL PROCESS CONTROL AGENTS IN THE SIZE AND MORPHOLOGY OF THE PARTICLES IN THE HIGH ENERGY MILLING OF THE NB-25%AL ALLOY
Submission Author:
Fabiano Sangi de Oliveira , MG
Co-Authors:
Ágata Pontes, EDWIN MEDINA, Fabiano Sangi de Oliveira, Gilbert Silva, Marcos Cirilo, Eduardo Oliveira, Paulo Junior
Presenter: Paulo Junior
doi://10.26678/ABCM.COBEM2019.COB2019-0034
Abstract
The objective of this paper is to study the size and morphology of the particles before and after high energy milling of the elementary Nb and Al powders, with and without the use of Process Controlling Agents (PCA), through the mechanical alloying process (MA). The mixture of powders with chemical composition of Nb-25%Al underwent milling in a high energy planetary mill with controlled atmosphere using argon gas at 10, 30, 40 and 50h. In order to analyze the best milling condition for the use of PCA, samples were prepared without PCA, 1% by mass of acetone and 1% by mass of methanol as PCA. Heat treatment was carried out at 850°C for 10h in the samples with 50h of milling. Scanning Electron Microscopy (SEM) was used for microstructural analysis, for the analysis of the distribution and the size of the particles was used sedigraphy.
Keywords
Mechanical Alloying, High energy milling, Particle Sizes, Particle Morphologies
