Silicon Carbide ntawm Vickers Hardness ntawm 2000kg / mm2, muab kev tiv thaiv zoo dua rau kev siv cov khoom siv txhuam
Silicon carbide ceramic: Moh's hardness yog 9.0 ~ 9.2, Silicon Carbide ntawm Vickers Hardness ntawm 2100kg / mm2, muab kev tiv thaiv zoo dua rau kev siv cov khoom siv sib txhuam nrog kev tiv thaiv zoo heev rau kev yaig thiab xeb, kev tiv thaiv zoo heev thiab kev tiv thaiv oxidation. Nws yog 4 txog 5 zaug muaj zog dua li nitride bonded silicon carbide. Lub neej ua haujlwm yog 7 txog 10 zaug ntev dua li cov khoom siv alumina. MOR ntawm RBSiC yog 5 txog 7 zaug ntawm SNBSC, nws tuaj yeem siv rau cov duab nyuaj dua.
Silicon carbide hnav tsis kam, nws yog synthesized los ntawm silicon carbide thiab carbon ntawm qhov kub siab, yog ib hom silicon carbide khoom. Cov silicon carbide hnav tsis kam qhov chaw yog dav siv hauv kev tsuas, ore crushing, kev tshuaj ntsuam thiab kev thauj mus los ntawm cov kua hnav siab, corrosive siab, kuj zoo heev rau cov khoom siv kho tshuab nrog kev ua haujlwm siab thiab kev sib khi, xws li lub twj tso kua mis siab, lub twj tso kua mis sib nqus thiab lwm yam. Yog ib hom tshiab ntawm cov khoom siv hnav tsis kam. Reaction-bonded silicon carbide hnav tsis kam bushing muaj cov yam ntxwv ntawm kev nyuaj siab, kev hnav tsis kam siab, kev cuam tshuam tsis kam, kev kub siab, acid thiab alkali corrosion tsis kam thiab lwm yam, thiab lub neej ua haujlwm tiag tiag yog ntau dua 6 npaug ntawm polyurethane. Nws yog tshwj xeeb tshaj yog tsim rau kev ua haujlwm ntawm kev faib tawm, concentration thiab dehydration ntawm cov khoom siv abrasive thiab coarse-grained, tau ua tiav siv hauv ntau lub mines. Peb lub tuam txhab yog ib qho kev tshaj lij silicon carbide hnav tsis kam ceramic khoom muag, hardness thib ob tsuas yog pob zeb diamond, nrog kev hnav tsis kam siab, kev pabcuam ntev lub neej nta. Lub yeeb nkab hnav tsis kam thiab lub luj tshib uas tsim nrog silicon carbide hnav tsis kam hauv ob sab phlu, nws cov ceramic hauv ob sab phlu tuab yog 6-35 hli, cov qauv yog los nruab rau lub raj ceramic twb sintered rau hauv qhov sib xws Cov kav hlau caliber, nrog cov kua nplaum hauv nruab nrab. Cov kav dej ceramic uas tiv taus kev hnav muaj cov yam ntxwv hauv qab no piv rau cov kav dej cast-stone uas tau siv yav dhau los, cov kav hlau alloy uas tiv taus kev hnav thiab cov kav dej ceramic composite.
Cov tshuaj tiv thaiv bonded silicon carbide (RBSC) muaj kev ua tau zoo heev uas tsis yooj yim hnav, cov khoom zoo ntawm qhov kub siab, kev yaig zoo thiab kev ua kom tsis yooj yim tawg, cov khoom no tuaj yeem siv tau rau ntau yam kev siv xws li cov yeeb nkab liners, ceramic luj tshib, tshuaj tsuag nozzles, txhaj tshuaj nozzles thiab hydrocyclone Cheebtsam.
Cov ntaub ZPC siv tau ntev dua li cov ntaub pobzeb thiab cov ntaub hlau. Cov khoom siv ceramic ZPC silicon carbide tiv taus kev co thiab kev puas tsuaj uas ua rau lub sijhawm khiav ntev dua thiab txo lub sijhawm tsis ua haujlwm.
Cov tshuaj tiv thaiv silicion carbide ceramic (RBSIC) yog cov khoom siv tiv taus hnav zoo tshaj plaws, uas yog qhov tshwj xeeb tshaj yog rau cov khoom siv abrasive, cov khoom loj, kev faib tawm, kev sib sau ua ke, kev qhuav dej thiab lwm yam haujlwm. Vim yog cov khoom saum toj no, covRBSiC / SiSiC silicon carbide liner lub luj tshib / liner rajtuaj yeem tiv thaiv tau qhov khoom ntawm kev hnav thiab kub siab kom ua rau lub neej ua haujlwm ntawm cov khoom siv ntev dua.
| Kev Ntsuas Txog Cov Khoom SiC Uas Muaj Reaction-Bonded | ||
| Khoom | Chav tsev | Cov ntaub ntawv |
| daim ntawv thov kub | °C | 1380 xyoo |
| qhov ceev | g/cm23 | ≥3.02 |
| qhib porosity | % | ≤0.1 |
| lub zog khoov | Mpa | 250 (20 ° C) |
| Mpa | 280 (1200 ° C) | |
| modulus ntawm elasticity | GPa | 330 (20 ° C) |
| GPa | 300 (1200 ° C) | |
| kev ua kom sov tau zoo | W/(m·k) | 45 (1200 ° C) |
| coefficient ntawm thermal expansion | K-1×10-4 | 4.5 |
| kev khov kho | 9 | |
| tsis kam rau kua qaub thiab alkali | zoo heev | |
Kev ua haujlwm ntawm silicon carbide ceramic hnav-resistant yeeb nkab
Cov yam ntxwv ntawm silicon carbide muaj xws li:
- Qhov ceev tsawg
- Muaj zog heev
- Lub zog kub zoo (Kev sib txuas ua ke)
- Kev tiv thaiv oxidation (Kev sib txuas ua ke)
- Kev tiv thaiv thermal zoo heev
- Kev kub siab thiab hnav tsis kam
- Kev tiv thaiv tshuaj lom neeg zoo heev
- Kev nthuav dav thermal tsawg thiab kev ua tau zoo thermal
Cov ntawv thov silicon carbide feem ntau suav nrog:
Lawv siv ntau dua rau kev ua haujlwm nrog kev hnav ntawm qhov kub qis dua li rau kev coj tus cwj pwm kub siab. Cov ntawv thov SiC yog xws li cov tshuaj txhaj tshuaj xuab zeb, cov foob dej twj tso kua mis tsheb, cov kabmob, cov khoom twj tso kua mis, thiab cov tuag extrusion uas siv cov khoom tawv, kev tiv thaiv kev sib txhuam, thiab kev tiv thaiv corrosion ntawm carbide ntawm silicon.
- Cov khoom siv turbine uas ruaj khov thiab txav tau
- Cov ntsaws ruaj ruaj, cov kabmob, cov twj tso kua mis
- Cov khoom siv pob valve
- Cov phaj hnav
- Rooj tog hauv qhov cub
- Cov khoom siv hloov cua sov
- Cov khoom siv ua cov wafer semiconductor
Kev lag luam hlau thiab fais fab: Qhov laj thawj uas ob lub lag luam no raug muab tso ua ke yog vim ob lub lag luam muaj ib qho
Shandong Zhongpeng Special Ceramics Co., Ltd yog ib qho ntawm cov khoom siv tshiab silicon carbide ceramic loj tshaj plaws hauv Suav teb. SiC technical ceramic: Moh qhov nyuaj yog 9 (New Moh qhov nyuaj yog 13), nrog kev tiv thaiv zoo heev rau kev yaig thiab xeb, kev puas tsuaj zoo heev - kev tiv thaiv thiab kev tiv thaiv oxidation. SiC cov khoom lub neej kev pabcuam yog 4 txog 5 zaug ntev dua li 92% alumina khoom. MOR ntawm RBSiC yog 5 txog 7 zaug ntawm SNBSC, nws tuaj yeem siv rau cov duab nyuaj dua. Cov txheej txheem hais nqe yog ceev, kev xa khoom yog raws li tau cog lus tseg thiab qhov zoo yog qhov thib ob rau tsis muaj leej twg. Peb ib txwm mob siab rau kev sib tw peb lub hom phiaj thiab muab peb lub siab rov qab rau lub zej zog.
