✧ Txheej txheem cej luam
Cov hlau nplaum NIB muaj ntau qib sib txawv, uas sib raug rau lub zog ntawm lawv cov teb sib nqus, xws li N35 (qaug zog tshaj plaws thiab pheej yig tshaj plaws) mus rau N52 (muaj zog tshaj plaws, kim tshaj plaws thiab tawg yooj yim dua). Lub hlau nplaum N52 muaj zog kwv yees li 50% dua li lub hlau nplaum N35 (52/35 = 1.49). Hauv Tebchaws Meskas, nws yog ib txwm muaj cov hlau nplaum qib neeg siv khoom hauv N40 txog N42. Hauv kev tsim khoom ntau, N35 feem ntau siv yog tias qhov loj me thiab qhov hnyav tsis yog qhov tseem ceeb vim nws pheej yig dua. Yog tias qhov loj me thiab qhov hnyav yog cov yam tseem ceeb, cov qib siab dua feem ntau siv. Muaj tus nqi siab dua ntawm tus nqi ntawm cov hlau nplaum qib siab tshaj plaws yog li nws yog ib txwm muaj ntau dua los pom N48 thiab N50 hlau nplaum siv hauv kev tsim khoom piv rau N52.
✧ Qib Kawm Yuav Txiav Txim Li Cas?
Cov hlau nplaum neodymium lossis feem ntau hu ua NIB, NefeB lossis super magnets yog cov hlau nplaum muaj zog tshaj plaws thiab siv dav tshaj plaws thoob ntiaj teb. Nrog rau cov tshuaj lom neeg sib xyaw ua ke ntawm Nd2Fe14B, neo magnets muaj cov qauv crystalline tetragonal thiab feem ntau yog tsim los ntawm cov ntsiab lus ntawm neodymium, Hlau thiab Boron. Tau ntau xyoo, neodymium magnet tau hloov pauv txhua hom hlau nplaum tas mus li rau kev siv dav hauv cov motors, electronics thiab ntau yam khoom siv niaj hnub ntawm lub neej. Vim muaj qhov sib txawv ntawm qhov xav tau ntawm magnetism thiab rub lub zog rau txhua txoj haujlwm, neodymium magnets yooj yim muaj nyob rau hauv ntau qib. NIB magnets raug qib raws li cov khoom siv uas lawv tau ua los ntawm. Raws li txoj cai yooj yim, qib siab dua, lub hlau nplaum yuav muaj zog dua.
Lub npe neodymium yeej ib txwm pib nrog 'N' ua raws li tus lej ob tus lej hauv cov koob ntawm 24 txog 52. Tsab ntawv 'N' hauv cov qib ntawm neo magnets sawv cev rau neodymium thaum cov lej hauv qab no sawv cev rau qhov khoom siv zog siab tshaj plaws ntawm cov hlau nplaum tshwj xeeb uas ntsuas hauv 'Mega Gauss Oersteds (MGOe). Mgoe yog qhov qhia txog lub zog ntawm txhua lub hlau nplaum neo tshwj xeeb nrog rau qhov ntau ntawm lub zog sib nqus uas nws tsim tawm hauv txhua yam khoom siv lossis daim ntawv thov. Txawm hais tias qhov ntau yam thawj pib nrog N24 txawm li cas los xij, cov qib qis dua tsis raug tsim tawm lawm. Ib yam li ntawd, thaum lub zog khoom siab tshaj plaws ntawm NIB kwv yees tias yuav ncav cuag N64 tseem tsis tau tshawb nrhiav cov qib zog siab xws li tseem tsis tau tshawb nrhiav kev lag luam thiab N52 yog qib neo siab tshaj plaws tam sim no uas tau npaj rau cov neeg siv khoom.
Cov ntawv ntxiv tom qab qib yog hais txog qhov ntsuas kub ntawm lub hlau nplaum, lossis tej zaum tsis muaj nws. Cov ntsuas kub txheem yog Nil-MH-SH-UH-EH. Cov ntawv kawg no sawv cev rau qhov kub siab tshaj plaws uas ua haujlwm tau piv txwv li Curie kub uas lub hlau nplaum tuaj yeem tiv taus ua ntej nws poob nws lub zog hlau nplaum mus tas li. Thaum lub hlau nplaum ua haujlwm dhau Curie kub, qhov tshwm sim yuav yog kev poob ntawm cov zis, txo qis kev tsim khoom thiab thaum kawg tsis tuaj yeem demagnetization.
Txawm li cas los xij, qhov loj me thiab cov duab ntawm txhua lub hlau nplaum neodymium kuj tseem ua lub luag haujlwm tseem ceeb hauv nws lub peev xwm los ua haujlwm tau zoo ntawm qhov kub siab dua. Ntxiv mus, lwm yam uas yuav tsum nco ntsoov yog tias lub zog ntawm lub hlau nplaum zoo yog sib npaug rau tus lej, yog li N37 tsuas yog 9% qaug zog dua li N46. Txoj hauv kev txhim khu kev qha tshaj plaws los xam qhov qib tseeb ntawm lub hlau nplaum neo yog los ntawm kev siv lub tshuab kuaj hysteresis graph.
AH Magnet yog lub tuam txhab muag khoom siv hlau nplaum tsis tshua muaj neeg tshwj xeeb hauv kev tshawb fawb, kev txhim kho, kev tsim khoom thiab kev xa tawm cov hlau nplaum sintered neodymium hlau boron uas muaj zog heev, muaj 47 qib ntawm cov hlau nplaum neodymium txheem, txij li N33 txog 35AH, thiab GBD Series txij li 48SH txog 45AH. Yog tias koj xav tau peb cov khoom, thov hu rau peb tam sim no!
Lub sijhawm tshaj tawm: Kaum Ib Hlis-02-2022