Khoom npe: Yttrium Boride
Khoom npe: Yttrium tetraboride, Yttrium tetraboride hmoov
CAS Nr: 12008-32-1
EINECS tus lej: 234-538-4
Purity: 95% -99.9%
Qhov tsos: tsaus grey hmoov
Mesh naj npawb: -20-500
Molecular Luj: 237.9
Melting point: 2800 degree
Boiling point: N / A
Qhov ceev: 4.32 g / cm3
Solubility: insoluble hauv dej
Txuj kev tsim khoom: N / A
Ntim: nyob rau hauv lub raj mis yas, lined nrog cov hnab yas thiab ntim nrog argon roj rau kev tiv thaiv los yog raws li cov neeg siv khoom
Cov yam ntxwv ntawm Yttrium Tetraboride:
Yttrium tetraboride (YB4) muaj qhov siab melting point ntawm 2800 degree . Lub microhardness ntawm cov qauv kub-nias ntawm chav tsev kub tuaj yeem ncav cuag 28.5 ± 1.0Gpa, lub zog khoov tuaj yeem ncav cuag 300MPa, thiab thermal expansion coefficient nce mus txog 7.6 Oxidation tshwm sim tsuas yog siab dua 1200 degree.
Yttrium tetraboride (YB4) thiab yttrium hexaboride (YB6) yog ob hom yttrium-muaj borides. Lawv tsis tsuas yog muaj cov yam ntxwv ntawm lub siab melting point, siab hardness, zoo tshuaj stability, zoo heev electromagnetic zog, tab sis kuj muaj tsawg brittleness. Nrog rau kev ua haujlwm zoo rau kev puas tsuaj, nws yuav tsum tau siv rau hauv thaj chaw ntawm ultra-siab kub ceramics los txhim kho lub toughness thiab ductility ntawm cov ntaub ntawv ceramic. Nyob rau tib lub sijhawm, piv nrog YB4 nrog tetragonal siv lead ua qauv, YB6 ceramics nrog lub cubic siv lead ua qauv muaj feem ntau yuav ua rau muaj kev cuam tshuam thaum lub sij hawm deformation, thiab cov khoom muaj ductility zoo dua. Tsis tas li ntawd, lub ntiaj teb tsis tshua muaj hexaboride kuj muaj cov yam ntxwv ntawm kev ua haujlwm qis, kev ua haujlwm siab, qhov loj emission tam sim no ceev, thiab muaj zog tiv thaiv thermal tawg. Nws yog cov khoom siv uas muaj peev xwm sib tw hauv cov khoom siv hluav taws xob-emitting, cov ntaub ntawv thermoelectric, thiab cov khoom siv superconducting. Yog li, daim ntawv thov kev cia siab ntawm lub ntiaj teb tsis tshua muaj hexaborides xws li YB6 yog qhov dav heev. Txawm li cas los xij, YB6 nrog lub vojvoog cation me me yog qhov tsis ruaj khov ntawm qhov kub thiab txias thiab yuav decompose rau hauv YB4 siab tshaj 1700 degree.
Txoj kev npaj ntawm yttrium tetraboride:
Nws tuaj yeem tsim los ntawm kev txo cov yttrium oxide nrog carbon, thiab sintering sib tov ntawm yttrium oxide (Y2O3) thiab boron carbide (B4C) kom tau yttrium tetraboride (YB4).
Kev siv Yttrium Tetraboride:
Yttrium boride (YB6 / YB4) muaj lub cev zoo heev, tshuaj lom neeg thiab hluav taws xob xws li cov ntsiab lus siab melting, siab hardness thiab lub zog, tsis tshua muaj siab, oxidation tsis kam, zoo heev tshuaj stability, zoo hluav taws xob thiab sib nqus zog, thiab lwm yam. Yog li ntawd, yttrium boride (YB6) ) / YB4) yog cov khoom siv hluav taws xob kub kub uas muaj kev ua haujlwm zoo tsim nyog rau kev siv hauv qhov chaw huab cua xws li ultra-siab kub ib puag ncig thiab ib puag ncig nuclear. Daim ntawv thov teb ntawm yttrium boride (YB6 / YB4) koom nrog ntau qhov chaw uas yuav tsum muaj cov khoom siv hluav taws xob kub kub, xws li lub tsheb loj tshaj plaws ua rau cov kab hluav taws xob tiv thaiv hluav taws xob thiab cov khoom siv foob pob hluav taws.
Cim npe nrov: Tuam Tshoj yttrium tetraboride manufacturers, lwm tus neeg