1. Txij li xyoo 1960---Xyoo 1963, tus kws tshawb fawb Asmeskas Schwartzwalder tau tsim txoj kev ua kom cov khoom ua npuas organic impregnation. Cov khoom ua los ntawm cov ...
2. Txij li xyoo 1970---Xyoo 1978, Mollard FR thiab Davidson N ntawm Tebchaws Meskas tau tsimalumina ceramic ua npuas ncauj limuas siv tau rau kev lim dej aluminium alloy casting los ntawm kev siv cov organic foam impregnation method nrog alumina thiab kaolin ua cov khoom siv tseem ceeb, txhim kho qhov zoo ntawm cov castings thiab txo cov nqi seem, cim tias aluminium oxide foam ceramic chips nkag mus rau theem kev siv industrial thiab txhawb lawv txoj kev loj hlob loj.
3. Xyoo 1980---Tebchaws Europe, Tebchaws Meskas, Nyiv Pooj thiab lwm lub tebchaws tau sib tw tshawb fawb thiab tsim cov lim dej ua npuas ncauj ntawm ntau yam khoom siv thiab cov lus qhia. Kev tsim khoom tau txhawb nqa mus rau kev siv tshuab thiab kev ua haujlwm tsis siv neeg, thiab cov khoom tau raug tsim ua ntau zaus thiab ua tus qauv.
Tuam Tshoj tau pib tshawb nrhiav txog alumina ua npuas ncauj ceramics thaum ntxov xyoo 1980. Harbin University of Technology, Shanghai Institute of Machinery Manufacturing Technology thiab lwm lub tsev kawm ntawv tau ua tus thawj coj hauv kev ua haujlwm tseem ceeb, maj mam paub txog kev ywj pheej ntawm kev siv tshuab thiab kev lag luam, thiab txo qhov sib txawv nrog kev lag luam thoob ntiaj teb.
Cov txheej txheem tseem ceeb yog cov organic ua npuas dej impregnation thiab cov kauj ruam yog raws li nram no:
1. Kev npaj cov slurry:Sib tov alumina hmoov, binder, dispersant, sintering aid thiab dej, do kom ua ib qho slurry sib xws nrog cov khoom khov siab thiab viscosity qis.
2. Kev dai thiab cov slurry:muab cov av ua npuas dej ua ntej (xws li daim txhuam cev polyurethane) rau hauv cov slurry, thiab ua kom cov slurry lo rau ntawm phab ntsa qhov ntawm cov npuas dej sib npaug los ntawm kev rho tawm thiab dov kom tshem tawm cov slurry ntau dhau.
3. Kev ziab thiab kho:Tom qab muab cov kua nplaum dai rau hauv qhov cub kom qhuav, muab lub cev ua npuas dej tso rau hauv qhov cub kom qhuav thiab ziab ntawm 80 - 120 ℃ kom cov nplaum khov kho, txhim kho lub zog ntawm lub cev thiab tiv thaiv kev hloov pauv hauv kev kho tom ntej.
4. Tshem cov roj thiab cov kua nplaum tawm:Muab lub cev ntsuab qhuav tso rau hauv lub cub tawg sintering thiab cua sov rau 400 - 600 ℃ kom cov organic ua npuas ncauj thiab cov binder lwj tag thiab volatilize ua lub cev ntsuab alumina uas muaj qhov porous. Nyob rau theem no, nws yog ib qho tsim nyog los tswj qhov kub kom tiv thaiv lub cev ntsuab kom tsis txhob tawg.
5. Kub siab sintering:Lub cev ntsuab degreased raug cua sov rau 1400 - 1600 ℃ rau sintering, yog li ntawd cov khoom txhuas oxide raug cov tshuaj tiv thaiv theem khov kho, cov noob loj hlob thiab sib xyaw ua ke, tsim cov pob txha ceramic muaj zog, thiab thaum kawg tau txais cov khoom txhuas oxide ua npuas ncauj ceramic.
6. Kev ua tiav tom qab:Txiav, txhuam, thiab ntxuav raws li qhov yuav tsum tau ua kom tau cov khoom tiav nrog cov qhov ntev thiab qhov tseeb tshwj xeeb.
1. Muaj porosity siab:Qhov porosity feem ntau yog nruab nrab ntawm 60% thiab 90%, thiab qhov loj ntawm qhov pore tuaj yeem hloov kho (los ntawm kaum tawm micrometers mus rau ob peb millimeters), nrog rau qhov pores sib txuas.
2. Qhov ceev tsawg:Qhov ceev ntawm cov khoom no tsuas yog 0.3-1.2 g/cm³ xwb, qis dua li ntawm cov khoom siv alumina ceramics (kwv yees li 3.95 g/cm³).
3. Kub siab ua haujlwm:Kev siv kub ntev tuaj yeem ncav cuag 1200-1600 ℃, lub sijhawm luv luv tuaj yeem tiv taus qhov kub siab ntawm 1800 ℃, tsis yaj lossis mos.
4. Kev tiv thaiv xeb:tsis kam rau kua qaub thiab alkali (tshwj tsis yog cov xov xwm alkaline muaj zog), tsis kam rau cov tshuaj lom neeg, zoo dua li cov khoom siv hlau.
5. Kev ua tau zoo ntawm kev lim dej:Cov qauv qhov txuas nrog tuaj yeem cuam tshuam cov khoom khov hauv cov kua dej nrog kev tiv thaiv kua qis.
6. Kev rwb thaiv tsev kub:Porosity siab cuam tshuam kev coj cua sov thiab convection, ua rau nws yog cov khoom siv rwb thaiv tsev zoo heev.
7. Lub zog kho tshuab nruab nrab:Lub zog compressive thiab flexural zog ua tau raws li qhov yuav tsum tau ua ntawm kev siv hauv kev lag luam, thiab muaj qee qib ntawm kev tawv, uas tsis yooj yim brittle.
8. Muaj peev xwm hloov kho tau zoo:Qhov ntau thiab tsawg sib txawv, cov duab thiab PPI tuaj yeem hloov kho tau thiab yog li nws tuaj yeem ua tau raws li qhov xav tau ntawm cov ntawv thov sib txawv.
- Kev lim dej kub siab
1. Kev lim dej yaj hlau:Thaum casting cov hlau uas tsis yog ferrous xws li txhuas, tooj liab, zinc, thiab lwm yam, nws lim cov oxide inclusions thiab cov khoom tsis huv hauv cov yaj kom txhim kho qhov huv ntawm qhov casting.
2. Kev lim roj kub kub:siv rau kev tshem tawm cov hmoov av kub kub hauv kev lag luam xws li metallurgy, chemical engineering, thiab pov tseg incineration, intercepting cov hmoov av me me thiab purifying gases.
- Thaj chaw rwb thaiv tsev kub
1. Lub hauv paus ntawm lub cub tawg:txheej rwb thaiv tsev rau cov qhov cub ceramic, cov qhov cub metallurgical, thiab cov qhov cub iav kom txo qhov poob cua sov thiab txuag hluav taws xob.
2. Cov khoom siv dav hlau:Ua cov ntaub ntawv rwb thaiv tsev rau cov dav hlau thiab cov cav, lawv tuaj yeem tiv taus qhov kub thiab txias.
- Catalytic carrier teb
1. Kev kho cov pa tawm hauv tsheb:Muaj peev xwm thauj nrog cov catalysts los hloov qee cov hlau nqa khoom, siv rau kev hloov pauv catalytic ntawm cov tshuaj lom neeg hauv cov pa tawm.
2. Kev tshuaj lom neeg catalytic:Ua tus neeg nqa khoom catalyst hauv cov tshuaj lom neeg, nws ua rau thaj chaw sib cuag tshuaj lom neeg nce ntxiv thiab txhim kho kev ua haujlwm catalytic.
- Lwm cov teb
1. Kev nqus suab thiab txo suab nrov:Siv ua cov ntaub ntawv nqus suab hauv qhov kub thiab txias thiab corrosive ib puag ncig, xws li cav compartments thiab suab rwb thaiv tsev txheej hauv cov nroj tsuag industrial.
2. Kev kho mob biomedicine:Cov khoom siv ua npuas ncauj alumina uas muaj cov khoom siv siab purity tuaj yeem siv ua cov scaffolds engineering rau cov pob txha, nrog rau kev sib raug zoo ntawm biocompatibility.
Alina Wang
Email: alinna@bestpacking.cn
Xov tooj/WhatsApp: +86 17307992122
Wechat: karol1005
Lub sijhawm tshaj tawm: Lub Ib Hlis-22-2026