Hexagonal siv lead ua
Titanium diboride yog hexagonal siv lead ua. 12
Titanium diboride (TiB2) muaj cov qauv siv lead ua ntawm hexagonal aluminium boride (AlB2) thiab zoo li grey lossis grey-dub hexagonal crystals lossis hmoov. Cov khoom sib xyaw no nthuav tawm cov khoom zoo heev, suav nrog cov thermal stability zoo, oxidation tsis kam thiab hluav taws xob conductivity. Titanium diboride muaj ib tug siab hardness, ib tug melting point ntawm 2900 thiab 3225 degree, oxidation kuj kub txog li 1000 degree nyob rau hauv huab cua, thiab yog ruaj khov nyob rau hauv HCl thiab HF acids. Vim nws lub cev thiab tshuaj lom neeg zoo heev, titanium diboride tau siv dav hauv ntau lub teb, suav nrog tab sis tsis txwv rau kev npaj cov khoom siv ceramic, cov hlau molten crucibles, tsim cov electrolytic cell electrodes, thiab cov khoom kub-pressed ceramic xav tau hluav taws xob zoo. conductivity.
Tsis tas li ntawd, txoj kev npaj ntawm titanium diboride muaj xws li carbothermal txo, nws tus kheej-propagating high-temperature synthesis (SHS) thiab mechanochemical cov tshuaj tiv thaiv (MR). Cov txheej txheem no muaj lawv tus kheej yam ntxwv. Piv txwv li, carbon thermal txo txoj kev yog ib tug txheej txheem uas yog dav siv nyob rau hauv industrial ntau lawm, tab sis lub resulting hmoov hais yog loj loj thiab muaj ib tug siab impurity cov ntsiab lus. Tus kheej-propagating high-temperature synthesis txoj kev muaj cov khoom purity siab thiab tsis tshua muaj zog siv sab nraud vim tus kheej-purification nyhuv ntawm tus txheej txheem. Mechanochemical cov tshuaj tiv thaiv txoj kev muaj qhov zoo ntawm qhov tsis tshua muaj kev sib txuam kub, qhov dav ntawm cov khoom siv raw thiab tus nqi qis.