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Ferrite Toroid Core: Copper-Zinc Ferrite Fired at 1050 °C, Held at 600 °C in Oxygen (Snoek)
Charlie

Imeundwa na

Charlie

21. Oktoba 2026DE
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Ferrite Toroid Core: Copper-Zinc Ferrite Fired at 1050 °C, Held at 600 °C in Oxygen (Snoek)

Ferrite is a ceramic magnet: iron oxide combined with other metal oxides, carrying magnetic flux while hardly conducting electricity. Snoek at Philips (US 2,452,531, 1948) made this copper-zinc ferrite ring at a lower heat: technical copper oxide, zinc oxide and iron oxide with 1 % brownstone, fired at 1050 °C, then held 14 hours at 600 °C, all in oxygen. His ring had an initial permeability of 385. The picture: our diagram.
Juu
2 days

Maagizo

1

Mix 20.7 : 31.6 : 47.7 mol + 1 % brownstone

Mix technical copper oxide, zinc oxide and iron oxide in the molecular ratio 20.7 : 31.6 : 47.7 (on the pure oxides) and add 1 % by weight of brownstone (manganese dioxide). Ours, by weight: 13.91 g copper oxide, 21.73 g zinc oxide and 64.36 g ferric oxide per 100 g, plus 1 g brownstone.

Vifaa kwa hatua hii:

Oksidi ya shabaOksidi ya shaba13.91 g
Poda ya oksidi ya zinkiPoda ya oksidi ya zinki21.73 g
Oksidi ya feriOksidi ya feri64.36 g
Dioksidi ya manganizi (pairolusiti)Dioksidi ya manganizi (pairolusiti)1 g

Zana zinazohitajika:

Mizani ya mizani-mbiliMizani ya mizani-mbili
Barakoa ya vumbiBarakoa ya vumbi
2

Grind for 3 hours in an iron ball mill

Grind the mixture for 3 hours in a mill with iron balls.

Zana zinazohitajika:

Kinu cha mipira ya chumaKinu cha mipira ya chuma
Barakoa ya vumbiBarakoa ya vumbi
3

Mould a ring at 4 tons per cm²

Mould a ring 3 cm across and 4 × 4 mm in section at 4 tons per square centimetre, with water as the plastifying and binding agent.

Zana zinazohitajika:

Mashine ya kubana ya haidrolikiMashine ya kubana ya haidroliki
Kalibu ya kubonyeza peteKalibu ya kubonyeza pete
Maji yaliyosafishwa kwa mvukeMaji yaliyosafishwa kwa mvuke
4

Fire 1 hour at 1050 °C, hold 14 hours at 600 °C

Sinter the ring in oxygen at 1050 °C for 1 hour, cool it slowly to 600 °C and hold it there for 14 hours, all in oxygen, then let it cool further. Snoek's core had an initial permeability of 385.

Zana zinazohitajika:

Tanuru ya MrijaTanuru ya Mrija
OksijeniOksijeni
Mtungi wa gesi yenye shinikizoMtungi wa gesi yenye shinikizo
Kipima joto kaliKipima joto kali
Koleo la kaure ya kuyeyushiaKoleo la kaure ya kuyeyushia
Glavu Zinazostahimili JotoGlavu Zinazostahimili Joto

Vifaa

4

Zana Zinazohitajika

12

Mchoro huu unatengeneza

Thumbnail
Kishikilia nafasi

Kiini cha toroidi cha feraiti

Free

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Ferrite Toroid Core: Nickel-Zinc Ferrite Sintered at 1300 °C in Oxygen (Snoek)
Hatari

Ferrite Toroid Core: Nickel-Zinc Ferrite Sintered at 1300 °C in Oxygen (Snoek)

na CharlieDE

Viwandani

5
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0
0
0
0
Ferric Oxide: Hydroxide Precipitated from Ferric Chloride with Ammonia, Then Heated

Ferric Oxide: Hydroxide Precipitated from Ferric Chloride with Ammonia, Then Heated

na CharlieDE

Isiyo hai

3
0
0
0
0
0
Copper(II) Oxide by Heating Copper in Air

Copper(II) Oxide by Heating Copper in Air

na CharlieDE

Kemia

17
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0
0
0
0

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