Electrochemical deoxidation of titanium foam in molten calcium chloride

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DOIResolve DOI: http://doi.org/10.1007/s11663-007-9094-6
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TypeArticle
Journal titleMetallurgical and Materials Transactions B
Volume38
Issue6
Pages893900; # of pages: 8
AbstractTitanium foam, prepared by using a patented powder-metallurgy–based process involving a powder blend that was molded, foamed, and sintered using a three-step thermal treatment, was deoxidized in a molten CaCl₂ bath. The polarization experiments were carried out by cathodically polarizing the foam (working electrode) against a counter (graphite) electrode. Under constant potential (polarization) mode, the dominant mechanism of deoxidation was the ionization of oxygen, present in the foam, and its subsequent discharge, as CO₂/CO, at the anode surface. More than ~85 pct oxygen could be effectively removed by carrying out the electrodeoxidation experiments in fresh and pre-electrolyzed melt(s) at an electrolyte temperature of 950 °C. Scanning electron microscopy–energy dispersive X-ray (SEM-EDX) detection of the deoxidized foams did not show a presence of any inclusion(s) or secondary phase(s).
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute
Peer reviewedYes
NRC number49410
NPARC number15820154
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Record identifier9d7b919b-b8bc-4b28-8867-7a31621977b8
Record created2010-07-19
Record modified2016-05-09
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