Laser powder fusing as an additive manufacturing process to create the ferromagnetic coatings on the basis of Fe and Sm powders on stainless steel substrate

Nikolay G. Galkin; Yuri N. Kulchin; Evgeniy P. Subbotin; Alexander I. Nikitin; Dmitrii S. Yatsko; Maxim E. Stebliy; Alexander V. Nepomnyaschiy

doi:10.1117/12.2314693

4 January 2019 Laser powder fusing as an additive manufacturing process to create the ferromagnetic coatings on the basis of Fe and Sm powders on stainless steel substrate

Nikolay G. Galkin, Yuri N. Kulchin, Evgeniy P. Subbotin, Alexander I. Nikitin, Dmitrii S. Yatsko, Maxim E. Stebliy, Alexander V. Nepomnyaschiy

Author Affiliations +

Proceedings Volume 11024, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics 2017; 110240Z (2019) https://doi.org/10.1117/12.2314693
Event: Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics 2017, 2017, Taipei, Taiwan

Abstract

A robotic laser technological complex has been used for the laser powder fusing (LPF) of samarium (Sm) and iron (Fe) powders on stainless steel (SS) substrate in argon flow conditions for the creation of thick (1.0–1.5 mm) ferromagnetic coatings. The formation of Fe–Sm–Ni–Cr and Fe–Cr–Sm alloys was demonstrated on SS substrate due to intensive diffusion of Fe, Cr and Ni atoms from the substrate. A magnetic field (0.2 T) during LPF on the SS substrate resulted in crystallisation of single grains (5–20 microns) of the Fe–Cr–Sm alloy with mutually perpendicular orientation, which were embedded in the Sm–Fe–Ni–Cr alloy matrix and formed a mesh structure in the fused layer. When the additional magnetic field was absent during LPF the larger part of Sm atoms were located in near-surface sample area and around elongated grains, as well as in small grains of spherical form, but dissolution of Sm was blocked in elongated grains. The fused layers from Sm and Fe powders on SS substrates with and without magnetic field had a low coercivity (20–100 Oe), near zero residual magnetisation and high saturation magnetisation (110–112 emu/g) at 300 K. The maximum coercivity (100 Oe) was observed for coating fused with magnetic field, corresponding to mutually perpendicular orientation of ferromagnetic Fe–Cr–Sm grains. The cooling of samples to 4 K resulted in magnetic ordering with a Curie temperature of 50 K and with small changes in coercivity.

Citation Download Citation

Nikolay G. Galkin, Yuri N. Kulchin, Evgeniy P. Subbotin, Alexander I. Nikitin, Dmitrii S. Yatsko, Maxim E. Stebliy, and Alexander V. Nepomnyaschiy "Laser powder fusing as an additive manufacturing process to create the ferromagnetic coatings on the basis of Fe and Sm powders on stainless steel substrate", Proc. SPIE 11024, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics 2017, 110240Z (4 January 2019); https://doi.org/10.1117/12.2314693

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available