Ngwa nke ihe magnetik ferrite

Ngwa nke ihe magnetik ferrite

Ihe magnetik Ferrite bụ ferromagnetic metal oxide. N'ihe gbasara akụrụngwa eletrik, ihe mgbochi nke ferrite bụ ukwuu karịa nke metal na alloy magnetik ihe, na o nwekwara elu dielectric ọrụ. Ọrụ ndọta nke ferrite na-egosikwa elu ike ndọta n'ogo dị elu. Ya mere, ferrite magnet ihe aghọwo ihe a na-ahụkarị na-abụghị ọla magnetik maka elu ugboro na adịghị ike oke ugbu a. N'ihi obere ike magnetik echekwabara kwa otu olu nke ferrite na obere saturation magnetization, ferrite nwere oke na ngwa na-achọ njupụta ike magnetik dị elu na obere oge na elu ike mgbochi.

A na-eji ntụ ntụ na-emepụta ihe ndọta Ferrite metallurgy. A na-ekekarị ha ụzọ abụọ: barium (Ba) na strontium (Sr), ma kewara ya ụzọ abụọ: anisotropic na isotropic. Ọ bụ a magnetik na-adịgide adịgide nke na-adịghị mfe imebi ma ọ dịghị mfe imebi. Nke ihe, na kacha arụ ọrụ okpomọkụ nke 250 degrees Celsius, bụ dịtụ ike na kenkuwa. Enwere ike ịkpụ ya ma hazie ya na ngwaọrụ ndị dị ka aja diamond, a pụkwara ịmepụta ya n'otu oge na-eji ihe na-emepụta alloy arụpụtara. A na-eji ngwaahịa ndị dị otú ahụ eme ihe na moto magnet na-adịgide adịgide (Motor) na ọkà okwu (Onye na-ekwu okwu) na mpaghara ndị ọzọ. Ọdabara maka nkwukọrịta, mgbasa ozi, ngụkọta oge, njikwa akpaaka, igodo radar, igodo oghere, satịlaịtị nzikọrịta ozi, nha ngwa, mbipụta, ọgwụgwọ mmetọ, biomedicine, ụgbọ njem dị elu, wdg.

Ferrite bụ nke udi nke semiconductors na ngwá electronic, ya mere a na-akpọkwa ya magnetik semiconductor. Magnetite bụ ferrite dị mfe.

1. Ferrite na-adịgide adịgide gụnyere barium ferrite (BaO.6Fe2O3) na strontium ferrite (SrO.6Fe2O3). High resistivity, so na ngalaba semiconductor, yabụ oriri eddy ugbu a pere mpe, ike mmanye buru ibu, enwere ike iji ya rụọ ọrụ nke ọma na sekit magnetik ikuku, nke pụrụ iche maka obere ndị na-emepụta ihe na magnet na-adịgide adịgide. O nweghị ọla dị oke ọnụ ahịa dị ka nickel na cobalt. The akụrụngwa dị mma, na usoro adịghị mgbagwoju anya, na ọnụ ahịa dị ala. Nwere ike dochie AlNiCo na-adịgide adịgide magnet. Ya elu-iche ngwaahịa ike magnetik dị ala, ya mere ọ bụ ibu karịa ọla magnetik n'okpuru nnukwu ọnọdụ ike magnetik. Okpomọkụ ya nkwụsi ike adịghị mma, ọdịdị ya na-agbaji agbaji, ọ nweghịkwa ike iguzogide mmetụta na mmetụta. Ọdịghị adabara maka ihe atụ na akụrụngwa magnetik na nlezianya chọrọ. Ngwaahịa nke magnet ferrite na-adịgide adịgide bụ tumadi usoro anisotropic. Enwere ike iji ha rụpụta ihe mmalite magnet na-adịgide adịgide moto, moto magnet na-adịgide adịgide, ihe ndọta ndọta na-adịgide adịgide, na-adịgide adịgide ndọta nkwusioru, ndọta ndọta bearings, brọdband magnetik separators, ndị na-ekwu okwu, ngwa microwave, mpempe ọgwụ magnetik, ihe enyemaka ntị, wdg.

2. ferrite magnetik dị nro gụnyere manganese ferrite (MnO.Fe2O3), zinc ferrite (ZnO.Fe2O3), nickel zinc ferrite (Ni-Zn.Fe2O4), manganese magnesium zinc ferrite (Mn-Mg-Zn.Fe2O4) na ndị ọzọ otu ma ọ bụ ọtụtụ akụkụ ferrite. The resistivity dị nnọọ ukwuu karịa nke ọla ihe ndọta, ma ọ nwere ọrụ dielectric dị elu. N'ihi ya, ferrates nke nwere ma ferromagnetic na ferroelectric Njirimara yana ferromagnetic na piezoelectric Njirimara pụtara. Na elu frequencies, ya ike ndọta dị elu karịa nke ihe ndọta ọla, gụnyere nickel-iron alloys na sendust. Enwere ike itinye ya na ugboro ole sitere na kilohertz ole na ole ruo ọtụtụ narị megahertz. Nhazi nke ferrite bụ nke nkịtị seramiiki usoro, otú usoro dị mfe, na ọtụtụ nke A na-echekwa ọla ndị dị oké ọnụ ahịa, ọnụ ahịa ya dịkwa ala.

Njupụta magnetik saturation nke ferrite dị obere, na-abụkarị naanị 1/3-1/5 nke ígwè. Ferrite nwere obere ala ihe nchekwa ike magnetik kwa otu olu, nke na-egbochi ojiji ya na obere ala frequencies, elu iyi, na elu ike band ókè ebe nnukwu magnetik achọrọ njupụta ume. Ọ dabara adaba maka ugboro ugboro, ike dị ala na ala eletrik na-adịghị ike. Enwere ike iji nickel zinc ferrite dị ka antenna okporo osisi na intermediate ugboro transformer isi na mgbasa ozi redio, na Enwere ike iji manganese zinc ferrite mee ihe dị ka isi ihe ntụgharị ntanetị na TV onye nnata. Na mgbakwunye, a na-eji ferrite dị nro gbakwunye sensọ na nzacha cores na nkwurịta okwu ahịrị. Abụrụla ndị ntụgharị ihe ndekọ magnetik dị elu eji ọtụtụ afọ.