Direct laser welding of Sm and Fe powders for creation of magnetic alloys on the stainless steel substrate: microstructure and magnetic properties

Nikolay G. Galkin; Yuri N. Kulchin; Evgeniy P. Subbotin; Aleksander I. Nikitin; Dmitriy S. Yatsko; Artem A. Kostyanko; D. C. Pivovarov

doi:10.1117/12.2268255

14 December 2016 Direct laser welding of Sm and Fe powders for creation of magnetic alloys on the stainless steel substrate: microstructure and magnetic properties

Nikolay G. Galkin, Yuri N. Kulchin, Evgeniy P. Subbotin, Aleksander I. Nikitin, Dmitriy S. Yatsko, Artem A. Kostyanko, D. C. Pivovarov

Author Affiliations +

Proceedings Volume 10176, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics; 1017620 (2016) https://doi.org/10.1117/12.2268255
Event: Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics, 2016, Khabarovsk, Russia

Abstract

The testing of welding of Sm and then Fe powders was carried out on laser complex to create ferromagnetic coatings of (1-2) μm thickness in conditions of argon flow. X-ray diffraction analysis showed that oxidation of Sm and Fe occurs, but the main contribution of Fe grains in the structure was proved. It was established that in the conditions of the additional magnetic field (0.2 T) the crystallization of single Fe grains (5-20 μm) with formation of a mesh structure in Sm oxide matrix occurs on the whole thickness of the welded layer. The dissolution of Sm on the depth of 1.0-1.3 μm was observed inside the substrate with the formation of high density Sm oxide’s grains (2-10 μm), when the additional magnetic field is absent during laser welding. The Fe laser welding results in the formation of elongated Fe grains to a depth of 60-100 μm framed. Regardless of the microstructure samples showed similar magnetic loops with high saturation magnetization (110-112 emu/g), low coercivity (0-100 Oe) and near zero residual magnetization that corresponds to soft magnetic coatings with main contribution of Fe grains. Magnetic ordering was found in both coatings with Curie temperature of 50 K.

Citation Download Citation

Nikolay G. Galkin, Yuri N. Kulchin, Evgeniy P. Subbotin, Aleksander I. Nikitin, Dmitriy S. Yatsko, Artem A. Kostyanko, and D. C. Pivovarov "Direct laser welding of Sm and Fe powders for creation of magnetic alloys on the stainless steel substrate: microstructure and magnetic properties", Proc. SPIE 10176, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics, 1017620 (14 December 2016); https://doi.org/10.1117/12.2268255

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