Aluminium Nitride (AlN)yog dav siv nyob rau hauv lub hwj chim electronics, EV systems, thiab AI xam vim nws zoo heev thermal conductivity.
Piv nrog rau feem ntau cov ceramics xws li alumina (Al₂O₃), AlN qhia tau hais tias muaj kev ua tau zoo dua cov cua sov. Qhov no feem ntau yog los ntawm nws cov qauv siv lead ua, phonon thauj tus cwj pwm, thiab cov khoom siv purity.
1. Crystal Structure Ua kom muaj peev xwm hloov tau cov cua sov
AlN muaj hexagonal wurtzite siv lead ua qauv nrog muaj zog covalent bonding ntawm txhuas thiab nitrogen atoms.
Cov qauv txiav txim no tso cai rau cov cua sov hloov mus los ntawm phonons (lattice vibrations) nrog tsawg tawg.
Piv nrog alumina, AlN muaj ib qho yooj yim thiab ruaj khov lattice, uas pab kom sov txav tau zoo dua.
Tsis tas li ntawd, txhuas thiab nitrogen yog lub teeb atoms, uas txhim kho kev co sib xws thiab txo lub zog poob thaum hloov hluav taws xob.
High-purity AlN ib leeg tuaj yeem ncav cuag thermal conductivity txog ~ 320 W / m·K.
2. Cov pa oxygen impurities cuam tshuam rau kev ua haujlwm
Cov pa paug paug yog ib qho tseem ceeb uas txo cov thermal conductivity hauv AlN.
Thaum lub sij hawm ua, cov pa oxygen tuaj yeem nkag mus rau cov siv lead ua thiab tsim cov teeb meem xws li:
aluminium vacancy
theem nrab theem ntawm grain ciam teb
Cov teeb meem no nce phonon scattering thiab txo cov hluav taws xob hloov hluav taws xob.
High-kawg AlN hmoov tswj cov pa oxygen hauv qab 0.5%, uas yog qhov tseem ceeb rau kev ua haujlwm siab thermal.
sintering additives xws li tsis tshua muaj -lub ntiaj teb oxides yog siv los txhim kho densification, tab sis yuav tsum tau ua tib zoo tswj kom tsis txhob muaj tsawg -conductivity iav theem.
3. Qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom
Txawm tias muaj siab - cov hmoov purity, qhov kawg kev ua tau zoo nyob ntawm sintering zoo.
Yam tseem ceeb:
Tsawg porosity
Cov hnab ntim cua thaiv cov cua sov
High-quality AlN requires >99.5% ceev
Ntxuav cov ciam teb
Nyias thiab niaj hnub ciam teb txhim kho cua sov hloov
Impurities ntawm grain ciam teb txo conductivity
Zoo microstructure ua kom cov cua sov ntws zoo thoob plaws tag nrho lub cev ceramic.
💡 Kev Sib Tw thiab Laser Solution
AlN yog ob qho tib si thermally conductive thiab nkig heev, ua rau nws nyuaj rau tshuab nrog cov cuab yeej tsoos.
Mechanical processing feem ntau ua rau:
ntug chipping
micro- tawg
kev puas tsuaj sab hauv
Vim tias cov cua sov kis tau sai hauv AlN, kev sib cuag nrog cov neeg kho tshuab yooj yim ua rau tawg.
Laser Ua los ntawm YCLaser
Txhawm rau daws cov teeb meem no,Yuchang Laser (YCLASER)muab precision laser txiav thiab scribing tshuab rau siab heev ceramics xws li AlN.
Peb txhawb:
--cov qauv kuaj
--CAD-raws li kev ua haujlwm
--48-teev ceev tig rov qab
Peb cov kev daws teeb meem laser tau dav siv hauv semiconductor, hluav taws xob hluav taws xob, thiab kev lag luam ceramic siab heev.
👉Hu rau YCLASER rau kev ua haujlwm zoo thiab ruaj khov AlN laser kev daws teeb meem.
👉 Laser txiav video: Video - Wuhan Yuchang Laser Technology Co., Ltd.
