High Temperature Magnets: Yuav Ua Li Cas Thiaj Li Ua Tau Zoo Nyob Hauv Cov Txheej Txheem Tsis Txaus

Hauv ntau daim ntawv thov kev lag luam, cov hlau nplaum yuav tsum muaj kev ntseeg siab nyob rau hauv huab cua kub heev. Los ntawm hluav taws xob motors nyob rau hauv tsheb thiab aerospace systems mus rau siab - ceev turbines thiab industrial machinery, qhov kub thiab txias tuaj yeem cuam tshuam qhov kev ua tau zoo sib nqus. Xaiv txoj caikub hlau nplaumNws yog ib qho tseem ceeb kom tswj tau qhov ua tau zoo, tiv thaiv demagnetization, thiab txuas ntxiv lub neej kev pab cuam.

Phau ntawv qhia no piav qhia txog qhov sib txawv ntawm cov khoom sib nqus coj li cas hauv qab cua sov thiab cov kev daws teeb meem manufacturers thiab cov neeg yuav khoom tuaj yeem siv los ua kom ntseeg tau tias kev ua tau zoo.

Tag nrho cov hlau nplaum ruaj khov muaj kev poob qis hauv lub zog sib nqus thaum kub nce. Cov khoom tseem ceeb cuam tshuam muaj xws li:

• Coercivity:Kev tiv thaiv rau demagnetization txo qis nrog qhov kub siab dua.
• Residual flux density (Br):Qhov siab tshaj plaws sib nqus flux cov hlau nplaum tuaj yeem ua kom txo qis.
• Curie kub:Qhov chaw pib uas ib tug hlau nplaum kiag li poob nws cov hlau nplaum.

Kev nkag siab txog cov khoom no pab xaiv cov khoom siv uas tswj kev ua haujlwm ntawm qhov ntsuas kub ntawm lub cuab yeej.

NdFeB Magnets (Neodymium Hlau boron)

NdFeB hlau nplaum yog dav siv rau lawv lub zog sib nqus, tab sis cov qauv qib degrade sai dua 80-100 degree. Rau siab - daim ntawv thov kub, tsim tshwj xeebThaum tshav kub kub resistant neodymium hlau nplaummuaj, muaj peev xwm tswj tau qhov kub ntawm 150-200 degree.

Qhov zoo:

• Siab magnetic zog
• Tus nqi - zoo rau ntau daim ntawv thov kev lag luam

Kev txwv:

• rhiab heev rau qhov kub thiab txias tshaj SmCo
• Yuav tsum tau ua tib zoo txheej los tiv thaiv oxidation ntawm qhov kub siab

SmCo Magnets (Samarium Cobalt)

SmCo hlau nplaum yog paub rau lawv zoo heev thermal stability. Lawv tuaj yeem ua haujlwm tsis tu ncua ntawm qhov kub ntawm 250℃txog 350℃nyob ntawm qib.

Qhov zoo:

• Zoo kub kuj
• Zoo heev corrosion kuj, txo cov kev xav tau ntawm kev tiv thaiv txheej
• Kev ua haujlwm ruaj khov nyob rau hauv siab - ib puag ncig kev ntxhov siab

Kev txwv:

• Cov khoom siv ntau dua li NdFeB
• Brittle, yuav tsum tau ceev faj tuav thiab sib dhos

Ferrite Magnets

Cov hlau nplaum ferrite muaj cov cua sov nruab nrab thiab feem ntau tuaj yeem ua haujlwm ntawm 200 degree, tab sis lawv lub zog sib nqus yog qis dua cov hlau nplaum hauv ntiaj teb tsawg. Lawv tsim nyog rau cov ntawv thov uas muaj lub zog nruab nrab thiab siab - qhov ntsuas kub xav tau.

• Xaiv cov qib hlau nplaum zoo:Xaiv siab -kub NdFeB lossis SmCo raws li kev ua haujlwm.
• Siv cov txheej txheem kom raug:Nickel, epoxy, lossis parylene txheej tiv thaiv cov hlau nplaum los ntawm oxidation thiab thermal stress.
• Xav txog kev sib dhos tsim:Cov khoom sib nqus loj dua lossis ntau- ncej tsim tuaj yeem them nyiaj rau qhov kub thiab txias - cuam tshuam txog kev poob.
• Tsis txhob raug qhov kub thiab txias:Nruam raug rau qhov siab tshaj plaws kev khiav hauj lwm kub shortens lifespan; thermal tswj hauv cov cuab yeej yog qhov tseem ceeb.

• Electric motors nyob rau hauv EVs thiab hybrid tsheb: Siab torque nyob rau hauv siab kub.
• Aerospace actuators thiab sensors: Kev ruaj ntseg nyob rau hauv huab cua huab cua.
• Industrial twj, compressors, thiab turbines: Kev ua haujlwm tsis tu ncua ntawm qhov kub siab.
• Cov khoom siv kho mob thiab kuaj: High-cov hlau nplaum ua haujlwm hauv kev ua kom tsis muaj menyuam lossis siab - cov txheej txheem kub.

Xaiv cov khoom tsim nyog ua kom cov cuab yeej ua haujlwm tau zoo yam tsis xav txog demagnetization lossis kev ua haujlwm tsis zoo.

High- cov hlau nplaum kub yog qhov tseem ceeb hauv kev lag luam niaj hnub thiab siab - kev ua haujlwm zoo. Los ntawm kev nkag siab txog cov khoom txwv thiab qhov zoo- tshwj xeeb ntawmThaum tshav kub kub resistant neodymium hlau nplaum (NdFeB)thiabSmCo hlau nplaum-cov neeg yuav khoom thiab cov kws tsim khoom tuaj yeem ua cov kev xaiv paub txog kev ntseeg siab, ua haujlwm ntev -. Kev sib xyaw ua ke ntawm kev xaiv cov khoom siv zoo, cov txheej txheem tiv thaiv, thiab tsim kev sib dhos kom zoo ua kom cov hlau nplaum tswj kev ua tau zoo txawm tias thaum tshav kub kub heev.

Kev koom tes nrog ib tus kws tshaj lij cov khoom siv hlau nplaum yog qhov tseem ceeb rau kev qhia cov qib zoo, txheej txheej, thiab kev sib dhos rau siab - cov ntawv thov kub.