Lub tswv yim tseem ceeb ntawm thermal stability ntawm cov roj txiv roj fwj thiab iav, kev ua tau zoo ntawm cov iav fwj thiab cov roj txiv roj fwj nyob rau hauv qhov kub thiab txias hloov tsis raug rhuav tshem yog hu ua thermal stability ntawm iav (los yog tsis kam mus rau cua txias thiab cua kub ceev), thiab nws. thermal stability Qhov kev ua tau zoo yog qhia nyob rau hauv cov nqe lus ntawm qhov kub siab tshaj qhov sib txawv uas cov iav tuaj yeem tiv taus thaum tsis muaj kev puas tsuaj. Lub thermal stability ntawm iav fwj yog ib qho ntawm cov khoom tseem ceeb ntawm iav, yog li hauv kev tshawb fawb thiab kev tsim khoom, feem ntau cov iav fwj raug kuaj rau qhov kev ua tau zoo, xws li ntsuas iav, thermos iav, ntsuas kub iav, iav koob txhaj tshuaj, iav kaus poom, iav thiab hluav taws xob. Lub tshuab nqus tsev iav, thiab lwm yam, tshwj xeeb tshaj yog nyob rau hauv thermal ua ntawm iav, nws yog ib qho tseem ceeb tshwj xeeb los txiav txim siab thermal stability ntawm iav. Kev txiav txim siab cov cuab yeej no ua lub luag haujlwm txiav txim siab hauv kev tsim cov iav thiab yog ib qho haujlwm tseem ceeb.
Lub thermal conductivity ntawm txiv ntseej roj lub raj mis iav yog qhov tsis zoo, tshwj xeeb tshaj yog cov iav ntawm chav tsev kub, uas yog nyob hauv zos awakened thiab rhuab, lub tshav kub hloov mus qeeb heev, thiab nws yog ib qho yooj yim los ua overheating hauv cheeb tsam. Thaum lub overheating mus txog ib theem, lub iav yuav tawg vim tsis sib xws ntawm cua txias thiab cua sov. Cov ntaub ntawv iav tsis muaj thermal conductivity zoo li cov khoom uas muaj thermal conductivity zoo. Piv txwv li, cov khoom siv hlau muaj thermal conductivity zoo. Txawm hais tias cov ntaub ntawv hlau yog nyob rau hauv lub zos rhuab, lub tshav kub yog sai sai hloov mus rau tag nrho, thiab lub zos overheating tshwm sim ploj sai sai, yog li thermal conductivity ntawm hlau cov ntaub ntawv yog muaj zog tshaj li cov iav ntaub ntawv. Lub peev xwm ntawm cov khoom siv los hloov lub zog thermal mus rau qhov ntsuas kub qis dua los ntawm kev co ntawm cov khoom hu ua thermal conductivity. Tib neeg qhov xwm txheej ntawm ntau yam tshuaj yog sawv cev los ntawm thermal conductivity λ! λ sawv cev rau qhov yooj yim uas cov khoom hloov pauv cua sov, thiab nws cov nqi sib xws yog hu ua thermal resistance ntawm cov khoom.
Lub thermal conductivity ntawm ib qho khoom siv yog qhov sib npaug ntawm cov khoom siv hluav taws xob vim yog cov lattice thiab electrons. Txij li cov iav sib txawv ntawm cov hlau, nws muaj tsawg heev dawb electrons, thiab qhov kev tsis sib haum ntawm iav qauv ua rau kom thermal kuj ntawm iav thiab txo cov thermal conductivity. Lub pob tshab ntawm melancholic iav tsub kom lub permeability ntawm radiant tshav kub, yog li nyob rau hauv high kub, thermal conductivity ntawm iav nce nrog rau qhov kub thiab txias. Piv txwv li, thaum lub khob ntawm chav tsev kub yog rhuab mus rau lub softening kub, thermal conductivity ntawm iav yuav luag ob npaug; rau lwm qhov piv txwv, cov thermal conductivity ntawm cov xim tsis muaj xim thiab pob tshab iav kua yog ntau dua li cov xim iav kua. Nyob rau hauv iav ntau lawm, tshwj xeeb tshaj yog Nws yog lub crucible cub tawg uas melts lub iav. Nyob rau hauv tib qhov kub thiab qhov sib xyaw ua ke, cov iav xim yog feem ntau nyuaj rau yaj dua li cov iav pob tshab. Yog vim li cas yog tias cov thermal conductivity ntawm cov iav xim yog qis dua li ntawm cov iav pob tshab.