CrAlN coating to enhance the power loss and magnetostriction in grain oriented electrical steel
| Autor: | Philip Anderson, Siva Bohm, Vishu Goel, Fiona Robinson, Jeremy Hall |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Magnetic domain General Physics and Astronomy chemistry.chemical_element 02 engineering and technology engineering.material Stress 01 natural sciences Stress (mechanics) chemistry.chemical_compound Coating Aluminium 0103 physical sciences 010302 applied physics Aluminium nitride Metallurgy Sheet Magnetostriction 021001 nanoscience & nanotechnology lcsh:QC1-999 chemistry engineering 0210 nano-technology Layer (electronics) lcsh:Physics Electrical steel |
| Zdroj: | AIP Advances, Vol 6, Iss 5, Pp 055924-055924-5 (2016) |
| ISSN: | 2381-3652 |
| DOI: | 10.1063/1.4944340 |
| Popis: | Grain oriented electrical steels (GOES) are coated with aluminium orthophosphate on top of a forsterite (Mg2SiO4) layer to provide stress and insulation resistance to reduce the power loss and magnetostriction. In this work Chromium Aluminium Nitride (CrAlN) was coated on GOES samples with electron beam physical vapour deposition and was tested in the single strip and magnetostriction tester to measure the power loss and magnetostriction before and after coating. Power loss was reduced by 2% after coating and 6 % post annealing at 800 degrees C. For applied compressive stress of 6 MPa, the magnetostrictive strain was zero with the CrAlN coating as compared to 22 and 24 mu epsilon for fully finished GOES and GOES without phosphate coating. The thickness of the coating was found to be 1.9 +/- 0.2 mu m estimated with Glow Discharge Optical Emission Spectroscopy (GDOES). The magnetic domain imaging showed domain narrowing after coating. The reduction in power loss and magnetostriction was due to the large residual compressive stress and Young's modulus (270 GPa) of the coating. (C) 2016 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. |
| Databáze: | OpenAIRE |
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