Lub hom phiaj tseem ceeb thiab Annealing Methods ntawm Nanocrystalline Annealing

Lub hom phiaj tseem ceeb thiab cov txheej txheem Annealing ntawm Nanocrystalline Annealing

Lub hom phiaj tseem ceeb ntawm nanocrystalline annealing yog kom ua tiav cov crystallization tswj tau, txo cov kev ntxhov siab sab hauv, thiab txhim kho microstructure thiab cov khoom sib nqus.
Cov txheej txheem tseem ceeb yog ua raws li lub tshuab nqus tsev lossis huab cua- tiv thaiv annealing, ua ke nrog cov hlau nplaum annealing rau kev tswj xyuas cov khoom sib nqus.

1. Lub hom phiaj tseem ceeb ntawm Nanocrystalline Annealing
Nanocrystalline alloys (tshwj xeeb tshaj yog Fe-raws li mos magnetic nanocrystalline alloys) feem ntau yog npaj los ntawm amorphous precursors.
Annealing yog cov kauj ruam tseem ceeb uas txiav txim siab lawv qhov kev ua tau zoo kawg.
1.1 Induce Controllable Nanocrystallization (Qhov Tseem Ceeb)
• Kub lub amorphous alloy rau nws crystallization kub (kwv yees li 500–600 degree), precipitating ultrafine -Fe(Si) nanocrystals ntawm 10–20 nm nyob rau hauv lub amorphous matrix.
• Tsim ib qho amorphous + nanocrystalline dual-phase qauv, uas muab cov permeability siab, tsis tshua muaj coercivity, thiab cov tub ntxhais poob qis.
• Lub qhov rais kub yog nqaim heev:
○ Tsawg dhau → crystallization tsis txaus.
○ Siab dhau → grain coarsening thiab tsim cov qib sib nqus nyuaj, ua rau kev ua haujlwm tsis zoo.
 

1.2 Txo Cov Kev Nyuaj Siab Sab Hauv
• Tshem tawm cov neeg kho tshuab thiab thermal kev nyuaj siab qhia thaum lub sij hawm amorphous ribbon fabrication, winding, thiab ua.
• Kev ntxhov siab txo qis kev coercivity (Hc) thiab txhim kho thawj permeability (μi).
 

1.3 Optimize Microstructure thiab Defects
• Txhawb nqa atomic diffusion, txo cov lattice defects xws li cov chaw ua haujlwm thiab dislocations, thiab txhim kho kev ncaj ncees.
• Tswj lub xeev ciam teb nplej thiab cov khoom faib (xws li, cais ntawm Cu thiab Nb) txhawm rau txhawm rau txo qis kev loj hlob ntawm cov nplej.
 

1.4 Directionally Control Sib Nqus Domain Structure (Magnetic Field Annealing)
• Siv ib qho chaw sib nqus sab nraud los ua kom sib nqus sib nqus raws cov kev taw qhia yooj yim magnetization,
ntxiv txo qhov poob thiab txhim kho squareness piv.
 

2. Cov Txheej Txheem Tseem Ceeb thiab Cov Txheej Txheem Txheej Txheem
2.1 Muab cais los ntawm Kev Tiv Thaiv Huab Cua (Cov Txheej Txheem Txheej Txheem)
Nqus Annealing (Mainstream hauv Kev Lag Luam)
• Ib puag ncig: Lub tshuab nqus tsev siab (qis dua 10⁻³ Pa), cais tawm ntawm oxygen.
• Lub Hom Phiaj: Tiv thaiv kom siab -kub oxidation, ua kom huv si crystallization, txo kev ntxhov siab.
• Nta: Cov khoom sib nqus zoo heev, tab sis cua sov qeeb, qhov kub thiab txias sib txawv, lub voj voog ntev.
• Daim Ntawv Thov: General -lub hom phiaj nanocrystalline cores.
Atmosphere-Protected Annealing (N₂ / Ar)
• Ib puag ncig: High-purity nitrogen los yog argon ua cov roj tiv thaiv.
• Lub Hom Phiaj: Hloov lub tshuab nqus tsev, txo tus nqi, txhim kho kev ua haujlwm zoo.
• Nta: ceev cua sov, zoo kub uniformity, tsawg zog noj.
• Daim Ntawv Thov: Kev tsim khoom loj, nqi - cov khoom lag luam.
 

2.2 Muab faib los ntawm Magnetic Field Application (Performance Upgrade)
Ordinary Annealing (tsis muaj Magnetic Field)
• Tsuas yog ua kom tiav crystallization thiab txo kev ntxhov siab, tsis muaj kev siv sab nraud.
• Nta: Cov txheej txheem yooj yim, tus nqi qis, tab sis random magnetic domains, kev ua haujlwm nruab nrab.
• Daim Ntawv Thov: Cov ntawv thov dav dav nrog cov khoom siv sib nqus sib nqus.
Sib Nqus Field Annealing (Standard for High Performance)
• Cov txheej txheem: Siv cov hlau nplaum ntev los yog transverse magnetic teb thaum cua sov, tuav, thiab txias.
• Longitudinal magnetic field (raws li magnetic path):
Txhim kho permeability thiab ua tiav lub voj voos hysteresis.
• Transverse magnetic field (perpendicular to magnetic path):
Txo coercivity thiab core poob, haum rau siab - zaus inductors.
• Nta: Cov khoom sib nqus zoo tshaj plaws, txheej txheem txheej txheem rau siab -kawg nanocrystalline cores.

3. Tej yam kev thov (Kev xaiv txheej txheem)
• Fais fab electronics inductors: Nqus + transverse magnetic teb annealing
→ tsawg poob, siab stability.
• Tam sim no transformers: Nqus + longitudinal magnetic teb annealing
→ siab squareness ratio, siab rhiab heev.