Effect of Cr addition on the glass-forming ability, magnetic properties, and corrosion resistance in FeMoGaPCBSi bulk glassy alloys
- Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan)
The effect of Cr addition on the glass-forming ability (GFA), the magnetic properties, and corrosion resistance in Fe-Mo-Ga-P-C-B-Si glassy alloys was investigated. In addition to a slight increase of supercooled liquid region from 50 to 55 K, the substitution of a small amount of Fe with Cr was found to be effective for approaching alloy to a eutectic point, resulting in an increase in GFA. By copper mold casting, bulk glassy alloy rods with diameters up to 3 mm were produced. These glassy alloys exhibit a rather high saturation magnetization of 0.84-1.11 T with good soft-magnetic properties, i.e., low coercive force of 2.3-2.9 A/m, and high effective permeability of 13 360-15 960 at 1 kHz under a field of 1 A/m. The passive current density of the glassy alloy rod in 3 mass % NaCl solution decreased significantly from 1x10{sup 2} to 3x10{sup -1} A/m{sup 2} with an increase in Cr content, indicating that the addition of Cr is effective in enhancing the corrosion resistance.
- OSTI ID:
- 20880016
- Journal Information:
- Journal of Applied Physics, Vol. 100, Issue 4; Other Information: DOI: 10.1063/1.2335393; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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