COPGLOW and XPS investigation of recycled metal powder for selective laser melting
Artikel i vetenskaplig tidskrift, 2017

© 2017 Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute.The purpose of this paper is to compare, in terms of depth composition profile, a recycled hastelloy X powder and a virgin powder of the same alloy. We compare also the COPGLOW (compacted powder glow discharge analysis) method to the more established XPS (X-ray photoelectron spectroscopy) technique, in terms of similarity in reported elemental contents. A good match between the two methods was obtained on the surface of the powder particles (using an etching depth of 1 nm). Similar oxide layer thickness, of about 0.5–1 nm, was found on both powders by COPGLOW. Oxidation sensitive elements, such as Cr, were found on the surfaces by both XPS and COPGLOW on both powders. Surface content of Si appears to have decreased during use in selective laser melting. Finally, the two methods did not otherwise reveal any unexpected features in the depth profiles.

Additive manufacturing

compacted powder glow discharge analysis

X-ray photoelectron spectroscopy

depth composition profile

hastelloy X

metal powder


P. Mellin


Ruslan Shvab

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

A. Strondl


M. Randelius


H. Brodin

Eduard Hryha

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

Lars Nyborg

Chalmers, Material- och tillverkningsteknik, Yt- och mikrostrukturteknik

Powder Metallurgy

0032-5899 (ISSN)

Vol. 60 3 223-231





Bearbetnings-, yt- och fogningsteknik

Metallurgi och metalliska material



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