Aluminium Nitride (AlN) yog cov khoom siv siab tshaj -cov khoom siv ceramic uas ua ke nrog ob lub zog tseem ceeb tib lub sijhawm: thermal conductivity thiab hluav taws xob zoo heev. Qhov kev sib xyaw ua ke tsis tshua muaj no ua rau nws yog cov khoom siv tseem ceeb rau niaj hnub siab - lub zog hluav taws xob hluav taws xob, qhov twg cov cua sov thiab hluav taws xob kev nyab xeeb yuav tsum tau daws ua ke.
Nws yog dav siv nyob rau hauv kev lag luam xws li lub zog tshiab tsheb, 5G kev sib txuas lus, photovoltaic zog cia, thiab thib peb - tiam semiconductors, qhov twg thermal tswj kev ua tau zoo cuam tshuam ncaj qha rau cov cuab yeej kev ntseeg tau thiab lub neej ntev.
Basic txhais thiab qauv
Aluminium Nitride (cov tshuaj formula AlN) yog ib qho inorganic compound tsim los ntawm muaj zog covalent bonding ntawm txhuas thiab nitrogen atoms. Nws yog nyob rau hauv chav kawm ntawm dav -bandgap ceramic semiconductor cov ntaub ntawv.
Hauv nws daim ntawv ntshiab, AlN zoo li cov hmoov dawb lossis pob tshab siv lead ua. Industrial- cov ntaub ntawv qib feem ntau yog grey-dawb. Nws tsis yog - tshuaj lom, tshuaj lom neeg ruaj khov, thiab tuaj yeem tiv taus qhov kub thiab txias mus txog 2200 degree, ua rau nws haum rau siab - daim ntawv thov kub.
Cov qauv siv lead ua ruaj khov ntawm AlN yog cov qauv hexagonal wurtzite, zoo ib yam li pob zeb diamond -zoo li covalent network. Qhov kev sib raug zoo ntawm cov lattice no muab AlN nws zoo heev thermal, mechanical, thiab hluav taws xob zog. Nws kuj muab kev ruaj ntseg zoo nyob rau hauv kev ua haujlwm hnyav.
Tsis tas li ntawd, AlN muaj cov lattice zoo nrog cov ntaub ntawv xws li gallium nitride (GaN), ua rau nws zoo tagnrho substrate rau semiconductor epitaxial kev loj hlob.
Key Performance Advantages
Tus nqi ntawm Aluminium Nitride los ntawm nws lub peev xwm los ua ke cov khoom uas feem ntau nyuaj rau kev ua tiav hauv ib yam khoom.
1. High thermal conductivity + tsawg thermal expansion
AlN muaj qhov theoretical thermal conductivity txog li 320 W / m·K, uas yog ntau tshaj 10 npaug ntawm alumina ceramics thiab txog 7 npaug ntawm silicon. Hauv kev tsim khoom loj, qhov tseem ceeb nyob ib puag ncig 180-260 W / m·K.
Nyob rau tib lub sijhawm, nws muaj cov thermal expansion coefficient uas zoo sib xws silicon chips thiab silicon carbide li. Qhov no txo cov kev ntxhov siab thermal thaum lub sij hawm cua sov thiab cua txias, pab tiv thaiv kev tawg thiab delamination hauv cov ntim hluav taws xob.
2. Cov rwb thaiv tsev hluav taws xob zoo heev
Tsis zoo li cov ntaub ntawv xws li silicon carbide uas ua hluav taws xob, AlN muab cov hluav taws xob rwb thaiv tsev zoo thaum tuav cov thermal conductivity. Nws muaj lub zog dielectric siab thiab tsis tshua muaj to tam sim no. Qhov no ua rau nws zoo tagnrho rau siab - lub zog hluav taws xob ntim khoom siv hluav taws xob uas yuav tsum tau muaj cua sov thiab hluav taws xob cais tawm.
3. Qhov zoo ntxiv
AlN muaj qhov dav dav ntawm kwv yees li 6.2 eV, muab nws lub peev xwm muaj zog hauv kev siv ultraviolet optoelectronic sib sib zog nqus.
Nws kuj muaj zog txhua yam (Mohs hardness nyob ib ncig ntawm 7-8), zoo hnav tsis kam, thiab muaj zog tshuaj stability. Nws tiv taus cov kua qaub thiab alkali corrosion ntawm chav tsev kub thiab tswj kev ruaj ntseg nyob rau hauv siab - kub thiab txawm molten hlau ib puag ncig.
Kev siv thiab kev ua lag luam
Vim nws hardness thiab brittleness, Aluminium Nitride yog ib qho nyuaj rau tshuab siv cov pa pa. High-precision laser ua tau dhau los ua ib qho kev daws teeb meem zoo tshaj plaws rau kev txiav thiab drilling AlN Cheebtsam.
YCLaser muabsiab -precision ceramic laser txiavthiab cov tshuab drilling tsim los rau cov khoom siv qib siab xws li AlN, silicon nitride (Si₃N₄), thiab silicon carbide (SiC). Peb cov txheej txheem suav nrog cov txheej txheem kev paub tab los txhawb kev ruaj khov thiab ua haujlwm tau zoo.
Peb ua haujlwm ze nrog cov neeg siv khoom thoob plaws cov khoom xa tuaj thiab sab saud kom xa cov khoom zoo siab -cov khoom zoo.
Cov qauv kuaj dawb yog muaj rau kev ntsuam xyuas thiab kev ua tiav cov txheej txheem.
