Cov khoom thiab daim ntawv thov ntawm cov yeeb yaj kiab pob zeb diamond tshooj 1

Pob zeb diamond uas tsim los ntawm kev sib txuas tshuaj muaj zog muaj cov khoom siv kho tshuab thiab elastic tshwj xeeb. Qhov nyuaj, qhov ceev thiab thermal conductivity ntawm pob zeb diamond yog qhov siab tshaj plaws ntawm cov ntaub ntawv paub. Pob zeb diamond kuj muaj qhov modulus ntawm elasticity siab tshaj plaws ntawm txhua yam khoom siv. Tus coefficient ntawm kev sib txhuam ntawm pob zeb diamond zaj duab xis tsuas yog 0.05. Tsis tas li ntawd, pob zeb diamond muaj qhov thermal conductivity siab tshaj plaws, uas nce ntxiv los ntawm ntau dua tsib yog tias pob zeb diamond zaj duab xis tau npaj siv cov isotopes ntshiab ntawm carbon. Qhov laj thawj tseem ceeb rau kev siv cov isotopes ntawm carbon los npaj pob zeb diamond yog kom txo qhov phonon scattering ntawm pob zeb diamond. Raws li cov khoom siv superhard, pob zeb diamond zaj duab xis yog cov khoom siv txheej zoo, uas tuaj yeem txheej rau ntawm qhov chaw ntawm cov cuab yeej txiav thiab pwm kom txhim kho lawv lub zog ntawm qhov chaw thiab ua rau lawv lub neej ua haujlwm ntau dua. Qhov coefficient qis ntawm kev sib txhuam thiab thermal conductivity siab ntawm cov pob zeb diamond zaj duab xis tuaj yeem siv rau cov kabmob ceev ceev rau lo lus aviation. Qhov thermal conductivity siab, coefficient qis ntawm kev sib txhuam thiab lub teeb transmittance zoo ntawm pob zeb diamond zaj duab xis kuj ua rau nws feem ntau siv ua cov khoom siv fairing ntawm cov foob pob.

(2) Cov Khoom Siv Thermal thiab Cov Kev Siv ntawm Pob Zeb Diamond
Niaj hnub nim no, qhov thermal conductivity ntawm cov pob zeb diamond hluavtaws yog qhov ze rau cov pob zeb diamond ntuj. Vim nws cov thermal conductivity siab thiab hluav taws xob resistivity siab, pob zeb diamond tuaj yeem siv ua txheej insulating ntawm integrated circuit substrate, nrog rau cov thermally conductive insulating txheej ntawm solid-state lasers. Tsis tas li ntawd, pob zeb diamond lub thermal conductivity siab, muaj peev xwm ua kom sov me me, tshwj xeeb tshaj yog thaum kub siab thaum cov nyhuv dissipation kub yog qhov tseem ceeb, yog cov khoom siv cua sov zoo heev. Nrog rau kev txhim kho ntawm cov thev naus laus zis thermal conductivity siab pob zeb diamond nyias zaj duab xis deposition, nws tau ua rau daim ntawv thov ntawm pob zeb diamond nyias zaj duab xis thermal deposition ntawm cov lasers muaj zog siab, cov khoom siv microwave thiab cov circuits sib xyaw ua ke ua qhov tseeb.
Txawm li cas los xij, cov yam ntxwv ntawm cov yeeb yaj kiab pob zeb diamond cuav sib txawv heev vim yog cov txheej txheem npaj sib txawv. Piv txwv li, cov yam ntxwv thauj mus los thermal, uas feem ntau yog tus cwj pwm los ntawm qhov sib txawv loj hauv thermal diffusivity thiab thermal conductivity. Tsis tas li ntawd, cov yeeb yaj kiab pob zeb diamond cuav qhia txog anisotropy muaj zog, thiab cov thermal conductivity ntawm tib lub thickness zaj duab xis sib luag rau qhov chaw zaj duab xis yog qhov me dua li qhov perpendicular rau qhov chaw zaj duab xis. Cov no yog tshwm sim los ntawm cov kev tswj hwm sib txawv hauv cov txheej txheem tsim zaj duab xis. Nws tuaj yeem pom tias cov txheej txheem npaj ntawm cov yeeb yaj kiab nyias pob zeb diamond yuav tsum tau txhim kho ntxiv kom ua rau nws cov kev ua tau zoo zoo siv dav dua.

– Tsab xov xwm no yog tso tawm los ntawmlub tshuab nqus tsev txheej tshuab chaw tsim khoomGuangdong Zhenhua