Boron Nitride Crucible BN Crucible
Cov khoom qhia
Boron Nitride, tseem hu ua BN, Hexagonal Boron Nitride (H-BN), thiab kub-pressed Boron Nitride, yog ib qho zoo heev tus kheej-lubricate ceramic uas tuaj yeem tiv taus qhov kub thiab txias thiab tswj nws lub peev xwm lubricating hauv qhov chaw nqus tsev siab.AEM's Boron Nitride crucibles yog tsim los ntawm kub nias boron nitride dawb paug.Hexagonal Boron Nitride (H-BN) coj zoo ib yam nrog graphite mechanically tab sis muaj hluav taws xob zoo heev., thiab tseem tuaj yeem tsim ua BN cov khoom kawg ncaj qha xws li crucible, nkoj, txheej, thiab lwm yam.
Lub ntsiab nta
Boron nitride muaj hluav taws xob zoo rwb thaiv tsev, thermal conductivity, tshuaj stability, thiab tsis pom tseeb melting point.Qhov siab tshaj plaws siv kub hauv 0.1MPA nitrogen tuaj yeem ncav cuag 3000 ° C, nyob rau hauv qhov nruab nrab txo qhov cua, nws tuaj yeem tiv taus cua sov mus rau 2000 ° C, thiab kev siv kub hauv nitrogen thiab argon tuaj yeem ncav cuag 2800 ° C, thiab kev ruaj ntseg hauv cov pa oxygen. tsis zoo, thiab kev siv kub yog qis dua 1000 ° C.Lub expansion coefficient ntawm hexagonal boron nitride yog sib npaug ntawm quartz, tab sis lub thermal conductivity yog kaum npaug ntawm quartz.
Tsis tas li ntawd, hexagonal boron nitride tsis yaj nyob rau hauv dej txias, thiab thaum cov dej boiled, lub hydrolysis qeeb heev thiab tsim ib tug me me ntawm boric acid thiab ammonia.Nws tsis hnov mob nrog cov kua qaub tsis muaj zog thiab lub hauv paus muaj zog ntawm chav sov, me ntsis soluble hauv cov kua qaub kub, thiab yuav tsum tau kho nrog molten sodium hydroxide thiab potassium hydroxide kom decompose.
| Compound Formula | BN | |
| Purity | > 99.9% | |
| Molecular Luj | 24.82 Nws | |
| Melting Point | 2973°C kub | |
| Qhov ntom | 2.1 g / cm3 (h-BN);3.45 g / cm3 (c-BN) | |
| Solubility hauv H2O | Insoluble | |
| Mohs Hardness | 2 | |
| Flexural zog | 35mpa ua | |
| Coefficient ntawm Thermal Expansion | 2.0 x 10-6 / K | |
| Thermal conductivity ntawm 20 ℃ | 40 W/mk | |
| Ua haujlwm kub siab tshaj plaws | Oxidizing | 900 ℃ |
| Lub tshuab nqus tsev | 1900 ℃ | |
| Inert | 2100 ℃ | |
| Refractive Index | 1.8 (h-BN);2.5 (c-BN) | |
| Hluav taws xob Resistivity | 13-15 10x Ω-m | |
| Muaj peev xwm | 25ml, 55ml, 75ml, 100ml, 1000ml, thiab customized | |
Khoom siv
Boron nitride yog ib hom kub tsis kam, corrosion kuj, siab thermal conductivity, siab rwb thaiv tsev thiab zoo lubrication kev ua tau zoo ntawm cov khoom, qhov teeb meem tam sim no kom yooj yim cov txheej txheem, txo cov nqi ntau lawm, txhim kho cov kev pab cuam lub neej ntawm cov khoom yog tam sim no muaj zog dua. kev tshawb fawb qhia txog cov ntaub ntawv zoo li no.
(1) Siv cov tshuaj lom neeg zoo heev ntawm hexagonal boron nitride, nws tuaj yeem siv los ua crucibles, nkoj, kua hlau xa cov kav dej, foob pob hluav taws xob, cov cuab yeej siv hluav taws xob siab, cov kav hlau molten, cov twj tso kua mis, steel casting pwm, thiab lwm yam. melting evaporated hlau.
(2) Siv cov cua sov thiab corrosion tsis kam ntawm hexagonal boron nitride, high-temperature Cheebtsam, foob pob ua ntxaij combustion chamber linings, spacecraft tshav kub shields, magnetocurrent generators, thiab lwm yam.
(3) Siv cov rwb thaiv tsev ntawm hexagonal boron nitride, nws yog dav siv nyob rau hauv high-voltage high-zaus hluav taws xob thiab plasma arc insulators thiab insulators ntawm ntau yam cua sov, cua sov raj bushings thiab high-temperature, high-frequency, high-voltage rwb thaiv tsev thiab Thaum tshav kub kub dissipation qhov chaw, thiab high-frequency daim ntawv thov ntawm hluav taws xob rauv cov ntaub ntawv.
