Banyere Igwe Ọdụdọ

Kedu ihe bụ Neodymium Magnets

Neodymium magnetik (nkenke: NdFeb magnetik) bụ ihe ndọta kachasi ike na-adịgide adịgide na-ere ahịa, ebe niile n'ụwa. Ha na-enye ọkwa na-enweghị atụ nke magnetism na iguzogide demagnetization ma e jiri ya tụnyere Ferrite, Alnico na ọbụna Samarium-cobalt magnet.
Neodymium magnetik na-akara akara dị ka ike kachasị ike ha si dị, nke metụtara mmepụta magnetik n'otu olu otu nkeji. Ọnụ ahịa dị elu na-egosi ndọta siri ike. Maka ndọta NdFeB siri ike, enwere nhazi ọkwa mba ụwa niile ama ama. Ụkpụrụ ha sitere na 28 ruo 55. Akwụkwọ ozi mbụ N tupu ụkpụrụ dị mkpụmkpụ maka neodymium, nke pụtara sintered NdFeB magnets.
Ihe ndọta Neodymium nwere remanence dị elu, ike mmanye dị elu na ngwaahịa ike, mana ọ na-adịkarị ala Curie okpomọkụ karịa ụdị ndọta ndị ọzọ. Alloys magnet neodymium pụrụ iche nke gụnyere terbium na
e mepụtara dysprosium nke nwere okpomọkụ Curie dị elu, na-enye ha ohere ịnagide okpomọkụ dị elu. Tebụl dị n'okpuru ebe a na-atụnyere arụmọrụ magnetik nke neodymium magnet na ụdị ndị ọzọ nke magnet na-adịgide adịgide.

Kedu ihe a na-eji magnetik neodymium? N'ihi neodymium magnetik siri ike, ojiji ha na-adị ebe niile. A na-emepụta ha maka ọfịs, azụmahịa na mkpa ụlọ ọrụ, nke a na-eji n'ụdị ikuku ikuku,
igwe okwu, ntị ntị na moto, igwe okwu, sensọ, nlekọta ahụike, nkwakọ ngwaahịa, akụrụngwa egwuregwu, nka na ọdụ ụgbọ elu.

Kedu ihe bụ Ferrite Magnets

Igwe Ọdụdọ Ferrite na-abụghị ihe ndọta ferrite siri ike na ndọta dị nro.
Ferrite siri ike nwere oke mmanye, yabụ na-esiri ike demagnetize. A na-eji ha eme magnet na-adịgide adịgide maka ngwa dị ka friji, igwe okwu, na obere igwe eletriki na ihe ndị ọzọ.

Ferrite dị nro nwere mmanye dị ala, yabụ ha na-agbanwe ngwa ngwa ndọta ha ma na-eme ihe dị ka ndị na-eduzi oghere ndọta. A na-eji ha na ụlọ ọrụ eletrọnịkị na-emepụta cores magnetik na-arụ ọrụ nke ọma nke a na-akpọ ferrite cores maka inductor dị elu, ihe ntụgharị na antennas, yana na ngwa ngwa ngwa dị iche iche.

Ogige Ferrite dị ọnụ ala dị oke ọnụ, nke a na-ejikarị ígwè oxide eme ya, ma nwee ezigbo nguzogide corrosion.
Kedu ihe bụ Alnico Magnets
Ihe ndọta Alnico bụ ihe ndọta na-adịgide adịgide bụ nke sitere na ngwakọta nke aluminium, nickel na cobalt mana nwekwara ike ịgụnye ọla kọpa, ígwè na titanium.
Ha na-abịa n'ụdị isotropic, na-abụghị ntụziaka, ma ọ bụ anisotropic, mono-directional, ụdị. Ozugbo magnetized, ha nwere ugboro 5 ruo 17 ike ndọta nke magnetite ma ọ bụ lodestone, nke bụ ihe ndọta na-emekarị na-adọta ígwè.
Ihe ndọta Alnico nwere ọnụọgụ okpomọkụ dị ala yana enwere ike ịhazi ya maka ntinye mpụta dị elu maka ojiji na ngwa okpomọkụ dị elu dịka 930°F ma ọ bụ 500°C. A na-eji ha ebe nguzogide corrosion dị mkpa yana maka ụdị sensọ dị iche iche.

Kedu ihe bụ Samarium-cobalt Magnet (SmCo Magnet)

A samarium-cobalt (SmCo) magnetik, a ụdị nke obere-ụwa magnetik, bụ ike na-adịgide adịgide magnet mere nke abụọ bụ isi ọcha: Samarium na cobalt.Samarium-cobalt magnet na-adịkarị n'usoro n'otu aka ahụ ike na neodymium magnets, ma nwere elu okpomọkụ. ratings na elu mmanye.
Ụfọdụ njirimara SmCo bụ:
Ihe ndọta Samarium-cobalt na-eguzogide oke demagnetization.
Ihe ndọta ndị a nwere ezigbo nkwụsi ike nke okpomọkụ (okpomọkụ kachasị dị n'etiti 250 °C (523 K) na 550 °C (823 K); Curie okpomọkụ sitere na 700 °C (973 K) ruo 800 °C (1,070 K).
Ha dị oke ọnụ ma dabere na mgbanwe ọnụahịa (cobalt na-enwe mmetụta ọnụahịa ahịa).
SmCo magnetik nwere ike na-eguzogide corrosion na ọxịdashọn-eguzogide, na-emekarị adịghị mkpa na-ntekwasa na ike ọtụtụ-eji na elu okpomọkụ na ogbenye ọrụ ọnọdụ. Ha na-agbaji agbaji, na-enwekwa ike ịgbawa na chipping. Samarium-cobalt magnetik nwere ngwaahịa ike kachasị (BHmax) nke sitere na 14 megagauss-oersteds (MG·Oe) ruo 33 MG·Oe, ya bụ ihe ruru. 112 kJ/m3 ruo 264 kJ/m3; njedebe usoro iwu ha bụ 34 MG·Oe, ihe dịka 272 kJ/m3.
Ojiji ndị ọzọ gụnyere:
1. Igwe ọkụ eletrik dị elu na-eji na klas asọmpi karịa na ịgba ọsọ slotcarTurbomachinery.
2. Na-ejegharị ejegharị-efegharị tube ubi ndọta.
3. Ngwa ndị ga-achọ ka usoro ahụ rụọ ọrụ na okpomọkụ cryogenic ma ọ bụ okpomọkụ dị ọkụ (karịa 180 Celsius C).
4. Ngwa nke arụ ọrụ chọrọ ka ọ kwekọọ na mgbanwe okpomọkụ.
5. Benchtop NMR spectrometers.
6. Rotary encoders ebe ọ na-arụ ọrụ nke magnetik actuator.