Aluminium nitride (AlN) yog cov khoom siv hluav taws xob zoo heev uas muaj npe nrov rau nws qhov tshwj xeeb thermal conductivity. Hauv tsab xov xwm no, qhov tseem ceeb ntawm thermal conductivity, yam cuam tshuam rau nws, ntsuas txoj kev, thiab kev siv ntawm AlN ceramics hauv ntau qhov kev lag luam tau nthuav tawm.
Qhov tseem ceeb ntawm Thermal Conductivity
Thermal conductivity yog ib yam khoom tseem ceeb uas ntsuas cov khoom muaj peev xwm ua kom sov. Nyob rau hauv cov ntsiab lus ntawm txhuas nitride, siab thermal conductivity yog ib tug zoo tsim nyog tus cwj pwm, raws li nws enables npaum tshav kub hloov thiab dissipation. Cov cuab yeej no ua rau AlN ceramics tsis muaj nuj nqis rau cov ntawv thov cuam tshuam nrog kev tswj hwm thermal thiab cua sov dissipation.
Cov yam ntxwv cuam tshuam rau Aluminium Nitride Thermal Conductivity
Lub thermal conductivity ntawm AlN ceramics yog cuam tshuam los ntawm ntau yam, suav nrog:
1. Purity;
Cov qib purity siab dua ntawm aluminium nitride ua rau kev txhim kho thermal conductivity. Cov impurities, xws li oxygen thiab carbon, tuaj yeem cuam tshuam kev hloov hluav taws xob thiab txo cov thermal conductivity.
2. Cov qoob loo loj;
Cov nplej me me hauv microstructure ntawm aluminium nitride txhawb nqa thermal conductivity. Fine-grained cov ntaub ntawv nthuav tawm txhim kho cov hluav taws xob hloov hluav taws xob vim txo cov phonon tawg.
3. Kub;
Lub thermal conductivity ntawm aluminium nitride yog kub-nyob ntawm seb. Feem ntau, thermal conductivity txo qis nrog qhov kub thiab txias vim muaj zog phonon-phonon tawg.
4. Porosity;
Porosity nyob rau hauv cov qauv txhuas nitride tuaj yeem cuam tshuam kev hloov hluav taws xob thiab qis thermal conductivity. Cov khoom siv ntom, tsis muaj dabtsis cov khoom siv ua kom pom kev siv hluav taws xob zoo dua li qub.
5. Doping.
Ntxiv cov dopants, xws li silicon lossis yttrium, tuaj yeem hloov cov thermal conductivity ntawm aluminium nitride. Doping tuaj yeem hloov kho phonon tawg thiab cuam tshuam rau cov khoom siv hluav taws xob.
Kev Ntsuas Txoj Kev Thermal Conductivity
Lub thermal conductivity ntawm aluminium nitride tuaj yeem txiav txim siab siv ntau yam kev sim, suav nrog:
1. Laser Flash tsom xam;
Txoj kev no suav nrog kev xa cov qauv nyias ntawm AlN ceramic rau lub sijhawm luv luv laser mem tes thiab ntsuas qhov kub nce. Los ntawm kev txheeb xyuas qhov kub thiab txias, cov thermal diffusivity thiab thermal conductivity tuaj yeem xam tau.
2. Txoj Kev Hloov Pauv Hloov Chaw (TPS);
Hauv txoj kev no, TPS sensor tau muab tso rau ntawm ob qhov chaw ntawm AlN, thiab siv lub tshuab nqus cua sov. Qhov tshwm sim kub hloov thoob plaws lub sensor yog siv los txiav txim siab thermal conductivity.
3. Cov txuj ci sib piv;
Thermal conductivity kuj tuaj yeem kwv yees los ntawm kev sib piv cov khoom ntsuas ntawm AlN cov qauv nrog cov thermal conductivity paub. Cov txheej txheem sib piv no tsis tshua meej tab sis muab kev kwv yees ntawm thermal conductivity.
Kev siv ntawm AlN Ceramics
Qhov tshwj xeeb thermal conductivity ntawm aluminium nitride qhib rau ntau yam kev siv, suav nrog:
1. Cov khoom siv hluav taws xob;
AlN ceramic feem ntau yog siv los ua lub substrate rau cov khoom siv hluav taws xob muaj zog, xws li lub zog modules thiab LEDs. Nws cov thermal conductivity siab pab dissipate cua sov tsim los ntawm cov khoom no, ua kom pom kev ua tau zoo thiab kev ntseeg tau.
2. Cua sov dab dej;
AlN-raws li cov khoom siv hluav taws xob zoo hloov hluav taws xob kom deb ntawm cov khoom siv hluav taws xob, xws li CPUs thiab fais fab transistors. Qhov no ua rau kom txias txias thiab tiv thaiv overheating.
3. Microwave thiab RF Cheebtsam;
Aluminium nitride lub siab thermal conductivity ua rau nws yog ib qho khoom siv zoo tshaj plaws rau microwave thiab RF Cheebtsam, xws li lub zog amplifiers thiab kav hlau txais xov. Nws ua rau cov cua sov dissipation thiab txo cov thermal expansion mismatches.
4. Thermal Management Systems;
AlN ceramic pom cov ntawv thov hauv kev tswj xyuas thermal, suav nrog cov khoom siv hluav taws xob, cov kav dej kub, thiab cov khoom siv thermal interface. Nws cov thermal conductivity siab pab hauv kev hloov pauv ntawm cov cua sov hauv cov tshuab no.
5. Fais fab Electronics.
Aluminium nitride zoo heev thermal conductivity yog qhov zoo hauv kev siv hluav taws xob hluav taws xob, xws li hluav taws xob tsheb fais fab thiab cov tshuab hluav taws xob tauj dua tshiab. Nws ua kom ntseeg tau kev ua haujlwm thiab kev ua haujlwm ntev ntawm lub cuab yeej.
Txhua yam nyob rau hauv tag nrho, aluminium nitride qhov tshwj xeeb thermal conductivity ua rau nws yog ib qho khoom siv zoo heev rau ntau qhov kev lag luam uas xav tau kev hloov hluav taws xob zoo thiab kev tswj xyuas thermal. Nkag siab txog cov xwm txheej cuam tshuam rau thermal conductivity, nrog rau cov txheej txheem ntsuas kom raug, tso cai rau kev ua kom zoo dua ntawm aluminium nitride lub peev xwm hloov hluav taws xob.
