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https://www.um.edu.mt/library/oar/handle/123456789/101511| Title: | The structure and properties of magnetron sputtered Fe-Cr-Ni coatings containing sigma phase |
| Authors: | Mallia, Bertram Dahm, Karl L. Ogwu, Abraham Dearnley, Peter A. |
| Keywords: | Intermetallic compounds Examinations Coatings Corrosion and anti-corrosives |
| Issue Date: | 2007 |
| Publisher: | Wiley-VCH Verlag GmbH & Co. KGaA |
| Citation: | Mallia, B., Dahm, K. L., Ogwu, A., & Dearnley, P. A. (2007). The Structure and Properties of Magnetron Sputtered Fe‐Cr‐Ni Coatings Containing Sigma Phase. Plasma Processes and Polymers, 4(S1), S113-S119. |
| Abstract: | Fe-Cr-Ni alloy coatings were codeposited onto AISI 316L substrates using unbalanced magnetron sputtering. These were: (i) type B1, Fe-40Cr-4.5Ni; (ii) type B2, Fe-38Cr-8Ni; and (iii) type B3, Fe-55Cr-2.5Ni. In the as-deposited state, the B1 and B3 coatings mainly comprised solid solution a–Fe(Cr) and a0 -Cr(Fe) phases, were fully dense, and had a microhardness of 700 kg mm2, while coating B2 entirely comprised FeCrNi s-phase, contained micro- or nanometre-scale porosity, and had a hardness of 370 kg mm2. Despite being less hard, the as-deposited B2 coating displayed resistance to brittle fracture during scratch testing—this phenomenon was attributed to micropore toughening. When coating types B1 and B3 were partially or completely transformed to s-phase (by vacuum heat treatment) brittle fracture took place during scratch testing. |
| URI: | https://www.um.edu.mt/library/oar/handle/123456789/101511 |
| Appears in Collections: | Scholarly Works - FacEngMME |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| The_Structure_and_Properties_of_Magnetron_Sputtered_Fe‐Cr‐Ni_Coatings_Sigma_Phase.pdf | 268.59 kB | Adobe PDF | View/Open |
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