Zoo heev thermal conductivity, tswj coefficient ntawm thermal expansion thiab zoo heev cov ntaub ntawv purity. Zoo meej meej: Peb cov khoom siv rau kev lag luam hluav taws xob muaj lub cev tshwj xeeb heev. Siv los ua cov paib hauv paus thiab cov khoom siv hluav taws xob, lawv ua kom muaj kev ntseeg siab ntawm cov khoom siv hluav taws xob.

Thaum xub thawj siab ib muag, qhov tseeb hais tias hluav taws xob Cheebtsam ua kom sov yuav zoo li tsis muaj dab tsi yuav txhawj txog. Niaj hnub no, xyaum txhua tus menyuam kawm ntawv tuaj yeem qhia koj tias qhov chaw ntawm lub khoos phis tawj tau sov thaum nws hloov mus. Thaum lub cuab yeej ua haujlwm, ib feem ntawm cov khoom siv hluav taws xob tau poob raws li cov cua sov. Tab sis cia peb saib ze dua: Kev hloov pauv ntawm cov cua sov kuj tuaj yeem qhia tau tias yog cua sov hauv ib chav tsev (ntawm) cheeb tsam (heat flux ntom). Raws li cov piv txwv nyob rau hauv daim duab qhia, lub tshav kub flux ceev nyob rau hauv ntau yam hluav taws xob Cheebtsam yuav heev heev. Raws li nyob rau hauv lub foob pob hluav taws nozzle caj pas uas kub li 2800 ° C yuav tshwm sim.

Lub coefficient ntawm thermal expansion yog lwm qhov tseem ceeb rau tag nrho cov semiconductors. Yog tias cov khoom siv semiconductor thiab cov phaj hauv paus nthuav dav thiab sib cog lus ntawm cov nqi sib txawv thaum raug kev hloov pauv hauv qhov kub thiab txias, kev ntxhov siab txhua yam tshwm sim. Cov no tuaj yeem ua rau cov khoom siv hluav taws xob puas lossis cuam tshuam kev sib txuas ntawm cov nti thiab cov khoom siv hluav taws xob. Txawm li cas los xij, nrog peb cov ntaub ntawv, koj paub tias koj nyob hauv tes nyab xeeb. Peb cov ntaub ntawv muaj qhov zoo tshaj plaws coefficient ntawm thermal expansion rau kev koom nrog semiconductors thiab ceramics.

Raws li semiconductor puag daim hlau, piv txwv li, peb cov ntaub ntawv yog siv nyob rau hauv cov cua turbines, tsheb ciav hlau thiab muaj kev siv. Hauv lub zog semiconductor modules rau inverters (thyristors) thiab lub zog diodes, lawv ua lub luag haujlwm tseem ceeb. Vim li cas? Ua tsaug rau lawv qhov zoo tshaj plaws coefficient ntawm thermal expansion thiab thermal conductivity zoo heev, semiconductor puag daim hlau tsim lub hauv paus muaj zog rau cov rhiab silicon semiconductor thiab xyuas kom muaj kev pab cuam lub neej ntawm ntau tshaj 30 xyoo.

Thaum tshav kub kub kis thiab lub hauv paus phaj ua los ntawm molybdenum, tungsten, MoCu, WCu, Cu-Mo-Cu thiab Cu-MoCu-Cu laminates ntseeg tau dissipate tshav kub generated nyob rau hauv hluav taws xob Cheebtsam. Qhov no ob qho tib si tiv thaiv overheating ntawm cov khoom siv hluav taws xob thiab ua rau cov khoom lag luam nce ntxiv. Peb cov hluav taws xob hluav taws xob pab tswj kom muaj qhov chaw txias, piv txwv li, hauv IGBT modules, RF pob lossis LED chips. Peb tau tsim ib qho tshwj xeeb heev MoCu cov khoom sib xyaw rau cov khoom thauj khoom hauv LED chips. Qhov no muaj cov coefficient ntawm thermal expansion zoo ib yam li cov sapphire thiab ceramics.

Peb muab peb cov khoom rau kev lag luam hluav taws xob nrog ntau yam txheej txheej. Lawv tiv thaiv cov ntaub ntawv tiv thaiv corrosion thiab txhim kho kev sib txuas ntawm cov khoom siv hluav taws xob thiab peb cov khoom.