Journal
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 32, Issue 8, Pages 2215-2219Publisher
ELSEVIER
DOI: 10.1016/j.msec.2012.06.004
Keywords
Medical-grade stainless steel; Sintering; Local chemical composition; Electron microscopy; Energy dispersive X-ray spectroscopy
Categories
Funding
- EU FP7 Marie Curie IRG [239444]
- COST NanoTP
- TUBITAK EEEAG [108E163, 109E044]
- TUBITAK BIDEB
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In this paper, chemical composition uniformity in amorphous/nanocrystallization medical-grade stainless steel (ASTM ID: F2581) sintered with a Mn-Si additive was studied via scanning electron microscopy, energy dispersive X-ray spectroscopy, and transmission electron microscopy. The results show that as a result of sintering at 1000 degrees C, no dissociation of Mn-Si additive particles embedded in the stainless steel matrix occurs. In contrast, sintering at 1050 degrees C develops a relatively homogeneous microstructure from the chemical composition viewpoint. The aforementioned phenomena are explained by liquation of the Mn-Si eutectic additive, thereby wetting of the main powder particles, penetrating into the particle contacts and pore zones via capillary forces, and providing a path of high diffusivity. (C) 2012 Elsevier B.V. All rights reserved.
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