COPGLOW and XPS investigation of recycled metal powder for selective laser melting
Journal article, 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.

hastelloy X

depth composition profile

compacted powder glow discharge analysis

metal powder

X-ray photoelectron spectroscopy

Additive manufacturing

Author

P. Mellin

Swerea KIMAB

Ruslan Shvab

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

A. Strondl

Swerea KIMAB

M. Randelius

Swerea KIMAB

H. Brodin

Eduard Hryha

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Lars Nyborg

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Powder Metallurgy

0032-5899 (ISSN)

Vol. 60 3 223-231

Areas of Advance

Production

Materials Science

Subject Categories

Manufacturing, Surface and Joining Technology

Metallurgy and Metallic Materials

DOI

10.1080/00325899.2017.1296607

More information

Latest update

8/27/2018