Kushandiswa kweferrite magineti zvinhu

Kushandiswa kweferrite magineti zvinhu

Ferrite magineti zvinhu ndeye ferromagnetic simbi oxide. Maererano nemagetsi emagetsi, resistivity ye ferrite ndeye yakakura kupfuura iyo yesimbi uye alloy magineti zvinhu, uye ine zvakare yakakwirira dielectric mabasa. Iyo magnetic function yeferrite inoratidzawo yakakwirira magineti permeability pane yakakwirira frequencies. Naizvozvo, ferrite magineti zvinhu yave yakajairika isiri-simbi yemagineti zvinhu zvepamusoro frequency uye isina simba current limit. Nekuda kwesimba rakaderera remagineti rakachengetwa pachikamu chevhoriyamu ye ferrite uye iyo yakaderera saturation magnetization, ferrites inogumira mukati maapplication anoda yakakwira magineti simba density pane yakaderera frequency uye yakakwirira zvipingamupinyi zvemagetsi.

Ferrite magineti anogadzirwa nehupfu metallurgy. Ivo vanonyanya kukamurwa kuva marudzi maviri: barium (Ba) uye strontium (Sr), uye akakamurwa kuva marudzi maviri: anisotropic uye isotropic. Zviri a magineti echigarire ayo asiri nyore kubvisa magineti uye asiri nyore kuodza. The zvinhu, zvine tembiricha yepamusoro yekushanda ye250 degrees Celsius, ndizvo yakaoma uye yakaoma. Inogona kutemwa uye kugadziriswa nemidziyo yakadai se jecha redhaimani, uye rinogona kuumbwa panguva imwe chete ine alloy yakagadziriswa mold. Zvigadzirwa zvakadaro zvinoshandiswa zvakanyanya mumagineti echigarire mota (Motor) uye vatauri (Mutauriri) nedzimwe ndima. Inonyanya kushanda pakukurukurirana, kutepfenyura, kuverenga, otomatiki kudzora, radar navigation, space navigation, satellite kutaurirana, kuyera kwechiridzwa, kudhinda, kurapwa kwetsvina, biomedicine, high-speed transportation, nezvimwewo.

Ferrite ndeyechikamu che semiconductors mumagetsi, saka inonziwo magineti semiconductors. Magnetite iri nyore ferrite.

1. Maferi echigarire anosanganisira barium ferrite (BaO.6Fe2O3) uye strontium ferrite (SrO.6Fe2O3). High resistivity, ndeye semiconductor chikamu, saka eddy ikozvino kushandiswa idiki, simba rekumanikidza rakakura, rinogona kunyatso shandiswa mumhepo gap magineti wedunhu, iyo yakasarudzika kune madiki majenareta uye anogara magineti. Haina simbi dzinokosha senickel necobalt. Iyo raw material yakanaka kwazvo, iyo nzira haina kuoma, uye mutengo wakaderera. Inogona kutsiva AlNiCo zvachose magineti. Yayo yakakwirira-yakasiyana-siyana magineti simba chigadzirwa yakaderera, saka yakakura kupfuura magineti esimbi pasi pesimba remagineti. Tembiricha yaro kugadzikana kwakashata, maitiro ayo ane brittle uye brittle, uye haigoni kumira kukanganisa uye kunzwa. Haina kukodzera kuyera zviridzwa uye magineti michina nezvinodiwa zvakasimba. Zvigadzirwa zvechigarire magineti ferrite ndizvo zvakanyanya anisotropic series. Ivo vanogona kushandiswa kugadzira zvachose magineti starter mota, magineti echigarire mota, anogara magineti concentrators, anogara magineti suspensions, magineti thrust bearings, Broadband magnetic separators, vatauri, microwave zvishandiso, magineti ekurapa mapepa, zvinoyamura kunzwa, nezvimwe.

2. Soft magnetic ferrites inosanganisira manganese ferrite (MnO.Fe2O3), zinc ferrite (ZnO.Fe2O3), nickel zinc ferrite (Ni-Zn.Fe2O4), manganese magnesium zinc ferrite (Mn- Mg-Zn.Fe2O4) uye imwe chete kana multi-component ferrites. Iyo resistivity yakakura kudarika iyo yesimbi magineti zvinhu, uye ine yakakwira dielectric basa. Saka, ferrites izvo zvine zvese ferromagnetic uye ferroelectric zvivakwa zvakare ferromagnetic uye piezoelectric zvimiro zvakabuda. Pamafambiro akakwirira, ayo magineti permeability yakakwira zvakanyanya kupfuura iyo yesimbi yemagineti zvinhu, kusanganisira nickel-iron alloys uye sendust. Inogona kushandiswa muhuwandu kubva kune mashoma kilohertz kusvika kumazana e megahertz. Kugadziriswa kweferrite ndeyeyakajairwa ceramic process, saka maitiro ari nyore, uye akawanda simbi dzinokosha dzinochengetwa, uye mutengo wacho wakaderera.

Iyo saturation magineti flux density ye ferrite yakaderera zvikuru, kazhinji chete 1/3-1/5 yesimbi. Ferrite ine yakaderera magnetic energy reserve per unit volume, iyo inogadzirisa kushandiswa kwayo pasi frequencies, high currents, uye high power band bhendi kumiganhu uko yakakwirira magineti simba density inodiwa. Iyo inonyanya kukodzera kune yakakwira frequency, yakaderera simba uye isina simba yemagetsi munda wepamusoro. Nickel zinc ferrite inogona kushandiswa se antenna danda uye yepakati frequency transformer musimboti mukutepfenyura redhiyo, uye manganese zinc ferrite inogona kushandiswa semutsara wekutapurirana transformer musimboti muTV receiver. Uye zvakare, maferi akapfava anoshandiswa kuwedzera masensa uye mafirita cores mumitsara yekukurukurirana. Yakakwira frequency magineti yekurekodha transducers yave kushandiswa kwemakore akawanda.