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Léwu
Ferrite Toroid Core: Nickel-Zinc Ferrite Fired at 1400 °C, Held at 930 °C (Snoek)
Ferrite is a ceramic magnet: iron oxide combined with other metal oxides, carrying magnetic flux while hardly conducting electricity. In his first ferrite patent (US 2,452,529, 1948) Snoek at Philips ground the oxides very fine and fired rings in oxygen. This nickel-zinc ferrite (20 : 30 : 50 mol %) is milled 30 hours, fired 1 hour at 1400 °C and held 16 hours at 930 °C; his core had an initial permeability of 560. Nickel oxide dust is a cancer hazard: respirator on.
The picture: our diagram.
Ilọsíwájú
3 days
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Léwu
Ferrite Toroid Core: Nickel-Zinc Ferrite Sintered at 1300 °C in Oxygen (Snoek)
láti ọwọ́ Charlie
Ti Ilé-iṣẹ́
15
0
0
0
0
0
Ferric Oxide: Hydroxide Precipitated from Ferric Chloride with Ammonia, Then Heated
láti ọwọ́ Charlie
Inorganic
11
0
0
0
0
0
Léwu
Nickel Monoxide: Nickel Hydroxide Precipitated with Alkali and Strongly Heated
láti ọwọ́ Charlie
Inorganic
13
0
0
0
0
0
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