Alnico Magnet
Alnico (AlNiCo) ndiyo yekutanga kugadzirwa magineti echigarire inogadzirwa nealuminium, nickel, cobalt, iron uye mamwe masimbi anoteedzera alloy. Zvinoenderana neyakasiyana kugadzirwa maitiro akakamurwa kuita sintered Alnico (Sintered AlNiCo), uye akakanda aluminium nickel uye cobalt (Cast AlNiCo).Chigadzirwa chimiro chedenderedzwa uye mativi. Zvigadzirwa zveSintered zvakaganhurirwa kudiki, kugadzirwa kwavo kunze kwekushivirira kuri nani pane rough cast chigadzirwa chinogona kuita zvirinani kushanda.
Alnico alloys anogona kuve nemagineti kuti abudise simba remagineti uye kuve nepamusoro coercivity (kupokana ne demagnetization), nekudaro kugadzira magineti akasimba echigarire. Pakati pemagineti anowanzo kuwanikwa, chete magineti epasi-epasi akadai neodymium uye samarium-cobalt ane simba. Alnico magineti anogadzira simba remagineti pamatanda awo akareba se1500 gausses (0.15 teslas), kana kanenge ka3000 simba reMagineti ePasi. Mamwe mabhureki e alnico isotropic uye anogona kunyatsoita magineti mune chero nzira. Dzimwe mhando, dzakadai sealnico 5 uye alnico 8, ndeye anisotropic, imwe neimwe iine yaanofarira nzira yemagnetization, kana kutaridzika. Anisotropic alloys anowanzo kuve nehukuru hwemagineti mune yakasarudzika yekutarisa pane isotropic mhando. Alnico's remanence (Br) inogona kudarika 12,000 G (1.2 T), iyo coercivity (Hc) inogona kusvika ku1000 oersteds (80 kA/m), chigadzirwa chayo chesimba ((BH) max) chinogona kusvika ku5.5 MG·Oe ( 44 T·A/m). Izvi zvinoreva kuti alnico inogona kuburitsa yakasimba magineti inoyerera muakavharika magineti maseketi, asi ine kushoma kushoma kurwisa demagnetization. Kusimba kwemunda pamatanda chero anogara magineti anoenderana zvakanyanya nechimiro uye kazhinji ari pasi pesimba remanence rezvinhu.
Alnico alloys ane mamwe epamusoro-soro eCurie tembiricha chero ipi zvayo yemagineti, yakatenderedza 800 °C (1,470 °F), kunyangwe tembiricha yekushanda yakawanda ichiwanzoganhurwa kusvika ku538 °C (1,000 °F).[4] Ndiwo ega magineti ane magineti anobatsira kunyangwe akadziya dzvuku-kupisa.[5] Ichi chivakwa, pamwe nekuputika kwayo uye nzvimbo yakakwira yekunyungudika, mhedzisiro yesimba rakasimba rekurongeka nekuda kwekubatana kwemukati pakati pealuminium nezvimwe zvinoumbwa. Iwowo mamwe magineti akatsiga kana akabatwa nemazvo. Alnico magineti anoita zvemagetsi, kusiyana nemagineti eceramic.
Alnico magineti anoshandiswa zvakanyanya mumaindasitiri uye nevatengi zvikumbiro panodiwa magineti akasimba echigarire; mienzaniso injini dzemagetsi, mapikicha egitare remagetsi, maikorofoni, masensa, masipika, magineti machubhu, uye magineti emombe. Mune akawanda maapplication ari kukwidziridzwa nemagineti epasi asingawanzo, ane minda yakasimba (Br) uye yakakura simba zvigadzirwa (BHmax) inobvumira madiki-saizi magineti kuti ashandiswe kune yakapihwa application.
