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is usually below 5 A/m (for alfer it is around 50 A/m) and permeability 55 000 (for alfer 4000). Saturation flux density is 0.8 T (for alfer 1.28 T).
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90:. For this reason alperm can be used in higher frequency range. However, because of the Al content the material is more susceptible to
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and it is used in magnetoelastic sensors. Later during the WW2, Japanese used the alloy with 12.7-12.9% aluminium as a replacement of
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Yamashiro, Y.; Teshima, N.; Narita, K. (1984). "Magnetic properties of rapidly quenched alperm ribbons".
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72:. The material can be produced in 0.5 mm thick sheets, as well as 50-60 μm thick ribbons.
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for the magnetostrictive transducers used in their Type 93 model 5, Type 3, and Simple naval
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of alloy up to 140 μΩm, which is almost four times the value in commonly used 3% SiFe
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119:"Effect of Aging on the Maximum Permeability in Quenched Fe-Al Alloys (Alperm)"
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An alloy with 13% Al is also sometimes referred to as
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The alloy was first synthesized and characterized by
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101:researchers H. Masumoto and Hideo Saito in 1939.
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196:Journal of Magnetism and Magnetic Materials
16:Class of alloys with high magnetostriction
82:The addition of Al increases electrical
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70:magnetic permeability
34:comprising 83-90% of
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68:and exhibits high
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258:Aluminium alloys
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88:electrical steel
51:magnetostriction
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84:resistivity
242:Categories
166:2015-05-08
135:2010-04-07
105:References
77:coercivity
64:Alperm is
92:oxidation
40:aluminium
227:See also
175:cite web
99:Japanese
233:Sendust
204:Bibcode
24:alfenol
59:sonars
55:nickel
32:alloys
22:(also
20:Alperm
160:(PDF)
153:(PDF)
129:(PDF)
122:(PDF)
47:alfer
28:alfer
181:link
75:The
36:iron
212:doi
26:or
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