1, Crystal iav yog hu ua dag siv lead ua. Vim tias ntuj siv lead ua tsis tshua muaj thiab tsis yooj yim rau kuv, nws tsis tuaj yeem ua tau raws li tib neeg cov kev xav tau, yog li cov iav siv lead ua dag tau yug los. Vim nws qhov siab pob tshab, nws tuaj yeem ua rau ntau yam khoom siv tes ua.
2, Ordinary iav
Ordinary iav yog cov khoom siv pob tshab uas tsim cov qauv sib txuas txuas ntxiv thaum melting, thiab maj mam nce hauv viscosity thaum lub sij hawm txias thiab hardens thiab crystallizes silicate-raws li cov khoom tsis yog xim hlau. Cov muaj pes tsawg leeg ntawm cov iav tshuaj oxides zoo tib yam (Na2O·CaO·6SiO2), cov khoom tseem ceeb yog silica. Siv dav hauv cov tsev, siv los cais lub teeb los ntawm cua, yog kev sib xyaw. Float iav ntawm ntab iav thiab daim phiaj iav yog qhov zoo.
Qhov sib txawv ntawm cov iav zoo tib yam thiab cov iav siv lead ua
Crystal iav thiab iav zoo tib yam zoo ib yam, tab sis lawv yog ob yam sib txawv kiag li, feem ntau nrog qhov sib txawv hauv qab no:
1, cov khoom sib txawv
Crystal iav yog siv lead ua ntawm silica, thiab iav tsuas yog ib lub xeev molten sib xyaw uas muaj silica.
2, txawv cov teebmeem
Cov iav zoo tib yam tsuas yog muaj cov nyhuv zoo nkauj, thiab cov iav siv lead ua muaj cov nyhuv piezoelectric ntxiv rau cov nyhuv zoo nkauj, thiab muaj kev noj qab haus huv tshwj xeeb.
3, tus nqi sib txawv
Tus nqi ntawm cov iav siv lead ua yog iav ob peb zaug lossis txawm tias ob peb zaug siab dua li iav zoo tib yam.
4, cov khoom sib txawv ntawm lub cev
(1) Cov iav siv lead ua yog cov siv lead ua uas muaj qhov nyuaj siab (Mohs qib 7), thaum lub hardness ntawm cov iav zoo tib yam yog qis (Mohs 5.5), siv lead ua tuaj yeem kos rau ntawm lub khob, thiab lwm yam.
(2) Cov iav siv lead ua yog lub cev siv lead ua nrog cov thermal conductivity zoo, thiab nws hnov qhov txias ntawm tus nplaig. Lub khob zoo tib yam yog sov.
(3) Qhov txawv ntawm daim iav polarizing, iav siv lead ua tuaj yeem xa lub teeb, tab sis iav tsis tuaj yeem.
Thaum lub sijhawm yuav khoom, peb tuaj yeem yooj yim paub qhov txawv raws li qhov sib txawv ntawm lub cev ntawm cov iav siv lead ua thiab cov iav zoo tib yam.
5, cov txheej txheem sib txawv
Cov iav tuaj yeem kub-casted, txuag kev ua haujlwm thiab kev ua haujlwm. Crystal iav yog siv lead ua, uas tsis tuaj yeem thim rov qab tom qab cua sov thiab melting, yog li nws tsis tuaj yeem raug pov los ntawm kub casting, thiab tsuas yog ua haujlwm txias xws li txiav lossis sib tsoo. Nws raug nqi ntau thiab nqi. Crystal iav muaj siab hardness thiab tsis yooj yim rau hnav. Cov iav zoo tib yam muaj qhov hardness tsawg thiab yooj yim rau rub. Cov iav siv lead ua muaj kev ruaj ntseg zoo thiab yuav tsis hloov xim thaum siv rau lub sijhawm ntev. Cov iav zoo tib yam yog ib qho yooj yim rau daj.
Yog tias koj tab tom nrhiav ib tus Laboratory glassware chaw tsim tshuaj paus, WUBOLab yog koj thawj qhov kev xaiv
