Khoom Description
Cov kub pressed boron nitride nozzle yog ib qho tshwj xeeb ceramic boron nitride tivthaiv tsim siv lub siab - kub thiab siab - txheej txheem siab. Nws cov ntsiab lus tseem ceeb yog hexagonal boron nitride (h-BN), cov khoom tseem ceeb rau boron nitride ceramics. Cov khoom no muaj cov txheej txheem txheej zoo ib yam li graphite, tau txais nws lub npe menyuam yaus "dawb graphite." Nws muab cov khoom siv thermal zoo, suav nrog cov ntsiab lus tseem ceeb ntawm boron nitride ceramic thermal conductivity, nrog rau cov tshuaj lom neeg ruaj khov thiab superior boron nitride machining muaj peev xwm, cais nws raws li machinable boron nitride. The hot-pressing process results in a dense and uniform hbn ceramic structure, granting it exceptional performance for extreme environments.
Cov qauv XRD ntawm cov qauv sintered tau pom tsuas yog rau tus yam ntxwv sib txawv peaks sib haum rau hBN siv lead ua dav hlau-(002), (100), thiab plaub lwm tus- tsis muaj qhov ntsuas qhov siab ntawm 43 degree, 50 degree, lossis 74℃(2θ) cuam tshuam nrog cBN.
·Cov txiaj ntsig ntawm tus cwj pwm density yog raws li hauv qab no:
Cov qauv sintered tau pom muaj kev sib raug zoo ntawm cBN cov ntsiab lus thiab cov txheeb ze ntom ntom:
1.Density li: Progressive nce nrog cBN ntxiv
2.Peak kev ua tau zoo:
①30 wt% cBN yielded siab tshaj plaws ntawm 97.6% theoretical
② ~ 15% siab dua qhov kev tshaj tawm yav dhau los rau hBN ceramics
3.Threshold effect: Density declined beyond 30 wt% due to particle agglomeration
·Cov ntaub ntawv kev ua tau zoo mechanical yog sau tseg raws li hauv qab no:
Kev tsim kho siab -kev ua tau zoo hBN ceramics nthuav tawm 2-3 zaug ntau dua compressive thiab flexural zog piv rau cov pa hBN ceramics, nrog rau cov Young's modulus thiab microhardness ntau dua.
·Lub dielectric kev ua tau zoo metrics tau sau tseg raws li hauv qab no:
Kev tsim kho siab -kev ua tau zoo hBN ceramics nthuav tawm cov khoom dielectric zoo dua.
| Khoom npe | Kub-Nias Boron Nitride Ceramic Nozzle |
| Xim | Customized raws li tus neeg yuav tsum tau ua |
| qhov loj | Customized raws li tus neeg yuav tsum tau ua |
| Ntim | Carton / Pallet / Ntoo rooj plaub (Raws li tus neeg yuav tsum tau muaj) |
| Lub sij hawm xa tuaj | Cov khoom lag luam txheem-Hauv 3 hnub |
| Yam khoom tsim | Raws li tus neeg siv khoom kos duab lossis qauv |
| Nta | Zoo zoo, tus nqi qis, Ntau lub Hoobkas, xa tuaj rau koj raws li qhov ze tshaj plaws rau koj qhov chaw |
| Daim ntawv thov | Muaj Ceramics |
| Daim ntawv pov thawj | ISO, CE |
Khoom Performance
- Siab -Tsub Resistance: tuaj yeem tiv taus qhov kub siab tshaj 1200℃rau lub sijhawm ntev, thiab mus txog 1800℃rau luv luv- siv sijhawm, hauv inert lossis txo cov cua, ua haujlwm zoo li boron nitride insulator.
- Zoo thermal stability: Tsawg coefficient ntawm thermal expansion thiab siab thermal shock kuj. Lub thermal conductivity ntawm boron nitride, tshwj xeeb tshaj yog hexagonal boron nitride thermal conductivity, tso cai rau nws tiv taus kub hloov ceev yam tsis muaj cracking.
- Chemical Inertia: Pom zoo tiv thaiv corrosion los ntawm feem ntau cov hlau molten, iav, ntsev, acids, thiab alkalis, txo cov tshuaj tiv thaiv los yog adhesion. Cov cuab yeej no tau muab faib thoob plaws - cov ntaub ntawv ntshiab xws li pyrolytic boron nitride (PBN).
- Tus kheej -Lubrication: Cov txheej txheem txheej muab kev sib txhuam qis, ua kom yooj yim tso tawm lossis cov khoom ntws. Qhov no kuj yog ib qho txiaj ntsig ntawm boron nitride nplooj thiab bn cov ntaub ntawv.
- Kev Ruaj Ntseg Hluav Taws Xob Zoo: Txhim khu kev ruaj ntseg zoo txawm tias nyob rau hauv qhov kub thiab txias, lub cim ntawm boron ceramics thiab boron ceramics feem ntau.
- Machinability: Piv nrog rau lwm yam boron nitride ceramic cov ntaub ntawv, kub- nias BN muaj kuj qis hardness, ua boron nitride machining kom meej qhov ntev ua tau. Nws muaj nyob rau hauv ntau hom xws li boron nitride phaj, boron nitride raj, thiab boron nitride ceramic ntawv rau ntau daim ntawv thov.
Ceramic kev ua tau zoo parameter
| Tus lej | Kev ua tau zoo | Chav tsev | Boron nitride |
| BN99.9% | |||
| 1 | Qhov ntom | g/cm3 | 2.15 |
| 2 | Flexural zog | MPa | 94~95 |
| 3 | Fracture toughness | MPa·m 1/2 | |
| 4 | Dielectric tsis tu ncua | εr (20 degree, 1MHz) | 4.37 |
| 5 | Hardness | GPa | 1.15 |
| Hardness | HRC | ||
| 6 | Volume resistivity | Ω·cm (20 degree) | |
| 7 | Elastic modulus | GPa | 29.4 |
| 8 | Coefficient ntawm thermal expansion | ×10-6/k | 1-2 |
| 9 | Compressive zog | MPa | 120 |
| 10 | Kev puas tsuaj | g / cm2 | |
| 11 | Thermal conductivity | W / m × k (20 degree) | 35 |
| 12 | Poisson tus ratio | / | |
| 13 | Rwb thaiv tsev zog | kv/mm | |
| 14 | Kub | degree | 1000 hauv huab cua / 2200 hauv inert cua |
Cov ntawv thov tseem ceeb
Leveraging nws cov khoom tshwj xeeb, kub - nias boron nitride nozzles tau dav siv. Cov khoom lag luam tseem ceeb suav nrog Momentive Boron Nitride (boron nitride momentive).
- Hlau Ua: Siv los ua nozzles hauv cov txheej txheem xws li nruam casting thiab atomization. Nws tiv taus yaig los ntawm siab - kub hlau melts thiab tiv thaiv kev kis kab mob.
- Kev lag luam Electronics: Siv los ua crucibles thiab diffusion qhov nozzles rau semiconductor siv lead ua kev loj hlob. Ultra- siab purity pyrolytic boron nitride pbn los yog pbn txheej feem ntau yog siv nyob rau hauv cov kev xav tau zoo sib xws.
- Kev lag luam iav: Ua haujlwm hauv iav fiber ntau kos duab nozzles thiab siab - iav tuav cov khoom, muab kev tiv thaiv corrosion thiab tsis yog - ua raws.
- Cov Khoom Siv Txau: Siv los ua cov nozzles rau cov ntshav los yog cov nplaim hluav taws, muab cov thermal shock.
- Tshuaj thiab Metallurgical Industries: Tsim nyog rau cov nozzles tuav siab -kub los yog corrosive kua nyob rau hauv tswj qhov cub cua sov.
- Kev Tshawb Fawb Txog Kev Tshawb Fawb: Ua haujlwm ua ib feem tseem ceeb hauv siab -kev sim ntsuas kub. Cov ntaub ntawv zoo li nitrure de bore pyrolytique (pyrolytic boron nitride) thiab ntau yam boron nitride nplooj ntawv kuj tseem ceeb heev hauv kev sim.
Cim npe nrov: Hot-pressed boron nitride ceramic nozzle, kub-pressed boron nitride ceramic nozzle manufacturers, lwm tus neeg, Hoobkas
