SUOYI Boron Nitride Hmoov BN hexagonal boron nitride HBN CBN RBN WBN

Boron nitride yog siv lead ua los ntawm nitrogen atoms thiab boron atoms. Cov qauv siv lead ua tau muab faib ua hexagonal boron nitride (HBN), densely packed hexagonal boron nitride (WBN) thiab cubic boron nitride. Cov qauv siv lead ua ntawm hexagonal boron nitride muaj cov qauv zoo li graphite, uas qhia xoob, lubricated, yooj yim nqus dej, lub teeb yuag thiab lwm cov cim ntawm cov hmoov dawb, yog li nws tseem hu ua "dawb graphite".

Theoretical ceev 2.27g / cm3, tshwj xeeb lub ntiajteb txawj nqus: 2.43, Mo hardness yog 2.

Hexagonal boron nitriding muaj hluav taws xob zoo rwb thaiv tsev, thermal conductivity, tshuaj stability, tsis pom tseeb melting point, tshav kub tsis kam nyob rau hauv 0.1MPA nitrogen rau 3000ºC, nyob rau hauv nruab nrab txo qhov cua, tshav kub tsis kam mus rau 2000ºC, nitrogen thiab argon nyob rau hauv kev siv ntawm kub yuav ncav cuag 2800ºC, nyob rau hauv cov pa oxygen stability tsis zoo, kev siv kub hauv qab 1000ºC.

Hexagonal boron nitride muaj tib qhov nthuav coefficient li quartz, tab sis nws cov thermal conductivity yog kaum npaug ntawm quartz. Nws kuj muaj lubricity zoo ntawm qhov kub thiab txias, yog ib qho zoo heev kub kub khoom lubricant, muaj zog neutron absorption muaj peev xwm, tshuaj stability, thiab yog chemically inert rau yuav luag tag nrho cov hlau molten.

Hexagonal boron nitriding insoluble dej txias, dej boiling hydrolysis qeeb heev thiab tsim ib tug me me ntawm boric acid thiab ammonia, thiab qaug zog acid thiab muaj zog puag nyob rau hauv chav tsev kub tsis hnov ​​mob, me ntsis soluble nyob rau hauv kub acid, nrog molten sodium hydroxide, poov tshuaj hydroxide. kho kom decompose. Nws muaj ntau yam corrosion kuj rau ntau yam inorganic acids, hauv paus, ntsev tov thiab organic solvents.

● Thaum tshav kub kub resistant

● Thermally ruaj khov (txog 1000˚C hauv huab cua, 1400˚ hauv lub tshuab nqus tsev, thiab 2800˚C hauv qhov chaw tsis muaj zog)

● Tshuaj tiv thaiv

● Chemically inert thiab ruaj khov

● Tsawg thermal conductivity

● Tsawg thermal expansion

● Tsawg dielectric tsis tu ncua

● Tsis ntub dej (iav, ntsev, qee yam hlau)

● Lubricating nws tus kheej

● Yooj yim machined

● Hluav taws xob rwb thaiv tsev

Qee qhov kev siv boron nitride feem ntau peb ua tiav suav nrog:

● Rauv fixture txhawb thiab cov khoom

● Melting crucibles rau iav thiab hlau

● Plasma thiab vuam taub hau insulators

● High temp thermal ua tiav tshuab

● Molten hlau cab kuj kav

● Nuclear reactor shields thiab hauv ob sab phlu

● Semiconductor wafers

● Ceramic bushings

● Thaum tshav kub kub tiv thaiv kev tiv thaiv

● Ceramic ntxhua khaub ncaws

● Transistor cua sov dab dej

● Sputtering lub hom phiaj

● Microwave raj

● Ceramic txheej thiab xim

● Pump nozzles

● Nanotechnology

● Refractory pwm rau iav txoj kev thiab titanium txoj kev

● Ceramic hluav taws xob insulators

● Nkoj

● Thermocouple tiv thaiv sheaths

Hexagonal boron nitride yog ib hom khoom siv ceramic. Nws microstructure yog flaky thiab nws cov qauv molecular yog hexagonal siv lead ua. Hexagonal boron nitride muaj qhov tshwj xeeb thiab zoo heev ntawm lub cev thiab tshuaj lom neeg. Nws muaj thermal conductivity zoo heev, hluav taws xob rwb thaiv tsev, tshuaj corrosion kuj thiab oxidation kuj. Nws tuaj yeem tiv taus txog li 1000OC hauv huab cua, thiab mus txog 2000OC hauv cov roj inert thiab nqus. Cov crystalline boron nitride tau sintered ntawm qhov kub ntawm 2000OC, nrog rau cov tshuaj ruaj khov thiab lub cev muaj zog thiab cov thermal conductivity zoo heev (cov thermal conductivity ntawm ib qho siv lead ua yog li 250-300W / mk). Tam sim no, lub tuam txhab tsim flake crystalline hmoov nrog ib tug siv lead ua loj ntawm 500 nanometer-20 microns thiab nanoscale spherical boron nitride.

Hexagonal boron nitride yog nyiam los ntawm kev lag luam hluav taws xob vim tias nws cov xwm txheej tsis tshua muaj thermal conductivity thiab hluav taws xob rwb thaiv tsev ua haujlwm. Cov tuam txhab hluav taws xob hauv tsev thiab txawv teb chaws tau ua cov ntawv thov loj hauv kev tshawb fawb hauv thermal conductive plastics, semiconductor ntim thiab filling, LED kub dissipation ntim, thiab lwm yam. nitride kev lag luam.

Qee qhov kev lag luam uas feem ntau tau txais txiaj ntsig los ntawm hexagonal boron nitride ceramics suav nrog:

● Aerospace

● Metalforming

● Electronics

● Cua sov thiab txias

● Iav Fabrication

● Tub Rog thiab Kev Tiv Thaiv

● Thermal processing

● Kev tsim hluav taws xob thiab hluav taws xob

● Mineral ua