Analysis of Processing Parameters to Avoid Additional Oxygen Contamination During Production of Zr-based Bulk Metallic Glasses by Suction Casting in an Arc-melting Furnace

This study first reports details of a successful arc-melting furnace in the production of bulk metallic glasses (BMGs). Also, the study presents the results of a statistical experiment evaluating critical processing parameters that can increase oxygen concentration and its effects on the glass forming ability (GFA) of two Zr-based BMGs. The experiments on Zr48Cu46.5Al4Nb1.5 BMG composite found that using low arc-current (200 A), short melting time (11 s), positive pressure of argon inert gas trapped in the synthesis chamber, and the absence of prior melting of a Ti-getter results in a lower oxygen contamination in the produced alloy. The second experiment using the Vitreloy 105 BMG alloy proved the previous findings.

Bibliographic Details

Main Authors:	Campos Neto,Nelson Delfino de, Pereira,Flavio Soares, Oliveira,Marcelo Falcão de
Format:	Digital revista
Language:	English
Published:	ABM, ABC, ABPol 2021
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000100216
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