Applied Surface Science 442 (2018) 726–735 Contents lists available at ScienceDirect Applied Surface Science journal homepage: www.elsevier.com/locate/apsusc Full Length Article Microstructural characterization of Ni-based self-ﬂuxing alloy after selective surface-engineering using diode laser a,⇑ a b b Eun-Joon Chun , Changkyoo Park , Hiroshi Nishikawa , Min-Su Kim Busan Machinery Research Center, Korea Institute of Machinery and Materials, 48, Mieumsandan 5-ro 41beon-gil, Gangseo-gu, Busan 46744, Republic of Korea Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan ar ti c l e i nf o ab stra ct Article history: The microstructural characterization of thermal-sprayed Ni-based self-ﬂuxing alloy (Metco-16C ) after Received 28 December 2017 laser-assisted homogenization treatment was performed. To this end, a high-power diode laser system Revised 2 February 2018 was used. This supported the real-time control of the target homogenization temperature at the substrate Accepted 22 February 2018 surface. Non-homogeneities of the macrosegregation of certain elements (C and Cu) and the local concen- Available online 24 February 2018 tration of Cr-based carbides and borides in certain regions in the as-sprayed state could be enhanced with the application of homogenization. After homogenization at 1423 K, the hardness of the thermal-sprayed Keywords: layer was found
Applied Surface Science – Elsevier
Published: Jun 1, 2018
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