✧ Txheej txheem cej luam
NIB hlau nplaum tuaj nyob rau hauv ntau qib, uas sib haum mus rau lub zog ntawm lawv magnetic teb, xws li los ntawm N35 (tsis muaj zog thiab tsawg tshaj plaws kim) mus rau N52 (muaj zog tshaj, kim tshaj plaws thiab nkig). N52 hlau nplaum yog kwv yees li 50% muaj zog dua N35 hlau nplaum (52/35 = 1.49). Hauv Teb Chaws Asmeskas, nws yog qhov tsim nyog los nrhiav cov neeg siv khoom qib hlau nplaum hauv N40 txog N42 ntau yam. Hauv ntim ntau lawm, N35 feem ntau siv yog qhov loj thiab qhov hnyav tsis yog qhov tseem ceeb vim nws tsis tshua kim. Yog tias qhov loj thiab qhov hnyav yog qhov tseem ceeb, cov qib siab dua feem ntau yog siv. Muaj tus nqi them rau tus nqi ntawm cov hlau nplaum qib siab tshaj plaws yog li nws tau pom ntau dua los pom N48 thiab N50 cov hlau nplaum siv hauv ntau lawm piv rau N52.
✧ Qib Kawm Li Cas?
Neodymium hlau nplaum los yog ntau lub npe hu ua NIB, NefeB lossis super hlau nplaum yog qhov muaj zog tshaj plaws thiab feem ntau siv cov hlau nplaum coj mus muag thoob ntiaj teb. Nrog rau cov tshuaj muaj pes tsawg leeg ntawm Nd2Fe14B, neo hlau nplaum muaj cov qauv tetragonal crystalline thiab yog cov tseem ceeb ntawm cov ntsiab lus ntawm neodymium, Hlau thiab Boron. Tau ntau xyoo, neodymium hlau nplaum tau ua tiav tag nrho lwm yam ntawm cov hlau nplaum ruaj khov rau kev siv dav hauv cov tshuab hluav taws xob, hluav taws xob thiab lwm yam cuab yeej niaj hnub ntawm lub neej. Vim muaj qhov sib txawv ntawm qhov xav tau ntawm cov hlau nplaum thiab rub lub zog rau txhua txoj haujlwm, cov hlau nplaum neodymium tau yooj yim muaj nyob hauv ntau qib. NIB hlau nplaum raug muab qhab nia raws li cov khoom uas lawv tau ua los ntawm. Raws li txoj cai yooj yim, cov qib siab dua, cov hlau nplaum yuav muaj zog dua.
Tus neodymium nomenclature ib txwm pib nrog tus 'N' ua raws li ob tus lej nyob rau hauv koob ntawm 24 txog 52. Tsab ntawv 'N' hauv qib ntawm neo hlau nplaum sawv cev rau neodymium whereas cov lej hauv qab no sawv cev rau cov khoom siv hluav taws xob siab tshaj plaws ntawm cov khoom tshwj xeeb. Cov hlau nplaum uas ntsuas hauv 'Mega Gauss Oersteds (MGOe). Mgoe yog qhov taw qhia yooj yim ntawm lub zog ntawm ib qho tshwj xeeb neo hlau nplaum nrog rau qhov ntau ntawm cov hlau nplaum tsim los ntawm nws hauv ib qho khoom siv lossis daim ntawv thov. Txawm hais tias tus thawj ntau yam pib nrog N24 txawm li cas los xij, cov qib qis tsis raug tsim tawm lawm. Ib yam li ntawd, thaum lub zog siab tshaj plaws ntawm cov khoom lag luam ntawm NIB tau kwv yees mus txog N64 tab sis cov qib siab zog no tseem tsis tau tshawb fawb txog kev lag luam thiab N52 yog qib siab tshaj tam sim no neo tau npaj rau cov neeg siv khoom.
Ib tsab ntawv ntxiv tom qab qib yog hais txog qhov ntsuas kub ntawm cov hlau nplaum, lossis tej zaum qhov tsis muaj nws. Tus qauv ntsuas kub yog Nil-MH-SH-UH-EH. Cov ntawv kawg no sawv cev rau qhov siab tshaj plaws ua haujlwm kub xws li Curie qhov kub thiab txias uas cov hlau nplaum tuaj yeem tiv taus ua ntej nws mus tas li poob nws cov hlau nplaum. Thaum lub hlau nplaum ua haujlwm dhau qhov kub ntawm Curie, qhov tshwm sim yuav poob ntawm cov zis, txo cov khoom tsim tau thiab nws thiaj li tsis tuaj yeem demagnetization.
Txawm li cas los xij, lub cev loj thiab cov duab ntawm cov hlau nplaum neodymium kuj tseem ua lub luag haujlwm tseem ceeb hauv nws lub peev xwm los ua haujlwm zoo ntawm qhov sib piv ntawm qhov kub siab dua. Ntxiv mus, lwm qhov yuav tsum nco ntsoov yog tias lub zog ntawm cov hlau nplaum zoo yog qhov sib npaug ntawm tus lej, yog li N37 tsuas yog 9% tsis muaj zog dua N46. Txoj kev txhim khu kev qha tshaj plaws los xam cov qib pes tsawg ntawm cov hlau nplaum neo yog los ntawm kev siv lub tshuab ntsuas hysteresis graph.
AH Magnet yog lub ntiaj teb tsis tshua muaj cov hlau nplaum tshwj xeeb tshwj xeeb hauv kev tshawb nrhiav, tsim, tsim thiab xa tawm cov khoom siv zoo sintered neodymium hlau boron hlau nplaum, 47 qib ntawm cov qauv neodymium hlau nplaum, los ntawm N33 txog 35AH, thiab GBD Series ntawm 48SH txog 45AH muaj. Yog tias koj txaus siab rau peb cov khoom, thov hu rau peb tam sim no!
Post lub sij hawm: Nov-02-2022