Isingeniso Ukuvuselelwa okushisayo kwe-aluminium nitride

I-Aluminium Nitride (ALN) inezimpawu zamandla aphezulu, ukumelana ngevolumu ephezulu, ukumelana okuphezulu okubhekisele ukunwebeka okushisayo, nokufana okuhle nosizo lwe-silico, njll . Ensimini ye-ceramic substrate, ishidi le-ceramic kanye nezinto zokupakisha ezishile eminyakeni yamuva nje, futhi ukusebenza kwalo kudlula kude kakhulu kwe-alumina.

Phakathi kwezindawo ezibalulekile ze-aluminium nitride, okubaluleke kakhulu ukuthuthuka okushisayo. Mayelana nenqubo yokuvuselelwa eshisayo ye-aluminium nitride, ucwaningo oluningi senziwe ekhaya nakwamanye amazwe, kwakhiwa uhlelo oluphelele lwethiyori. Indlela enkulu yilena: Ukudlidliza nge-lattice, okungukuthi, ukudluliswa kokushisa ngosizo lwamagagasi ama-lattice noma amagagasi okushisa. Imiphumela yama-quantum mechanics isitshela ukuthi amagagasi ama-lattice angacutshungulwa njengokunyakaza kwenhlayiya, i-phonon. Amagagasi okushisa nawo ane-wave-pardap Amafoni aphethe ukushisa adlulisela ukushisa ngokuvinjelwa okuvinjezelwe futhi okuhlanganisiwe phakathi kwemisebe yezakhiwo (ama-athomu, ama-ion, noma ama-molecule). Uma i-crystatomer iyi-inelastomer enesakhiwo esifaneleke kahle, ukushisa kungadluliselwa ngokukhululeka ekupheleni okubandayo ngokuphela okushisayo kwekristalu ngaphandle kokuphazamiseka nokusakazeka, kanye nokusebenza okushisayo kungafinyelela inani eliphakeme kakhulu. Ukuqhutshwa kwalo okushisayo kulawulwa ikakhulukazi ngamaphutha wekristali kanye nokusakazeka kwe-Phonon ngezifo ngokwazo.

Ngokweqiniso, ukuthuthuka okushisayo kwe-ALN kungafinyelela ngo-320W · 1 · K-1, kepha ngenxa yokungcola kanye nokuphamba kwe-ALN, ukuthuthuka okushisayo kwe- aluminium nitride ceramic substrate kungaphansi kuka-200W · m-1. Lokhu kungenxa yokuthi amaqiniso wokuthi ama-primitives we-crystal awakwazi ukusatshalaliswa okuqinile okuqinile, futhi kuhlala kunezindawo ezihlukile nezimpinda ezihlukene, ngakho-ke amafoni athwala njalo azohlala ephazamiseka futhi ahlakazeke ngesikhathi sokusakazeka.