Cov khoom siv kub ntawm cov khoom siv hluav taws xob muaj cov yam ntxwv kub, kev ua haujlwm kub ua haujlwm ntau dua 2400 degree ua haujlwm, zoo heev kev ruaj ntseg thiab tshuaj lom neeg lub neej ruaj khov. Cov khoom no feem ntau yog siv nyob rau hauv kev lag luam nrog cov txheej txheem kub siab tshaj 1800 degree, thiab tuaj yeem siv hauv oxidizing, txo qis thiab lwm yam cua; Tshwj xeeb tshaj yog raws li txoj hauv kev rau tungsten-molybdenum sintering rauv, nws tuaj yeem nce ntau dua 2200 degree) thiab yog li txhim kho lawv qhov zoo.
Cov Khoom Siv Zirconia cov khoom kub refractory yog ib qho oxide refractory ua los ntawm zirconium oxide (zro2) Nrog kev coj dawb huv ntau dua 99% siv cov txheej txheem kub thiab lwm cov txheej txheem tshwj xeeb.
Zirconia cov khoom kub kub refractory
Zirconia muaj qhov suab nrov ntawm 2700 degree thiab mohs hardness ntawm 7. Nws muaj ob qhov sib txawv. Hauv qab no 1000 degree, nws yog ib lub kaw lus monoclinic (ceev 5.68g / cm3), thiab ntawm 1000 degree, nws tsim ib lub zog tetragonal (ntom 6.10g / cm3). Daim ntawv Crystal no yog kev hloov pauv rov qab. Thaum lub sij hawm txias txheej txheem, cov Crystal Daim Ntawv Kev hloov pauv yog nrog los ntawm 7% ntim nthuav, uas tuaj yeem ua rau cov khoom tawg. Ntxiv cov stabilizers thiab zro2Txhawm rau tsim cov cubic cov kua tuaj yeem tshem tawm cov ntawv nthuav dav tshwm sim los ntawm cov lus sib txawv saum toj no crystal. Zirconia muaj tsawg thermal conductivity (1000 degree, 2.09W / (map k)), loj linear nthuav coefficiency coefficiency ({} × 10-6/ degree), kev kub siab lub zog, thiab txuas nrog compressive compressive muaj zog tuaj yeem mus txog {} mpa ntawm 1000 degree. Nws muaj kev ua haujlwm zoo thiab qhov kub thiab txias coefficient ntawm kev tiv taus. Kev tiv taus yog 104ωωω at at at at at at at 1000 Degree thiab {4 4}} kev kawm qib siab. Cov tshuaj ruaj khov zoo, hauv qab 2000 degree, nws tiv taus ntau cov hlau molten thiab silicates.
Zirconia lub siab kub refractory yog siv rau melting cov hlau me thiab alloys xws li platinonia cov pob zeb yog siv rau cov kab hluav taws xob zoo siab tshaj 2000 degree. Zirconia Rods tuaj yeem siv los ua cua sov hais rau cov dej sov siab rau {}} degree hauv oxidizing huab cua. Cov khoom siv hluav taws xob nrog cov pa hluav taws xob rau kev txiav txim siab nrawm nrawm nrawm, thiab ua kom sov thiab sov kom sov roj. Los ntawm kev siv cov martensitic theem kev hloov pauv ntawm zirconia, thiab siv tau los ua cov kab ke ua kom tawv nqaij, thiab tsis yog xim zoo nkauj alumina thiab silicon nitride.
Cov Khoom Siv Oxide Cov Khoom Siv
Ib qho cov roj oxide ua los ntawm magnesium oxide (Mgo) nrog kev coj dawb huv ntau dua 99% siv cov txheej txheem ntau dua lossis lwm cov txheej txheem tshwj xeeb.
Ua yeeb yam
Melting taw tes 2800 degree, tseeb ceev 3.58g /M³ yog lub zog 100Mpa, linear nthuav coefficient 13.5 × 10-4/ degree, txom nyem thermal stability. Nws yooj yim rau hydrate los tsim mg (huag)2Nrog ntim hloov thaum sib tiv tauj dej lossis dej vapor ntawm chav tsev kub, ua rau cov khoom lag luam rau pulverize. Nws yog ruaj khov nyob rau hauv ib qho chaw oxidizing thiab kev ua haujlwm kub tau mus txog kaum 2000 degree; Nws yog ib qho yooj yim rau kev thauj khoom thiab decompose hauv kev txo cov cua thiab nqus tsev, thiab kev ua haujlwm kub yuav tsum tsis pub tshaj 1700 degree. Nws yog ib qho yooj yim kom txo tau cov xim hlau magnesium thaum sib cuag nrog cov pa roj carbon ntawm qhov kub ntawm kwv yees li 2000 degree. Nws tuaj yeem tiv thaiv kev xeb ntawm alkaline slag thiab molten platinum pawg me me, thiab yuav hnov cov kua qaub rau cov kua qaub thiab hlau xws li CU thiab MN. Nws tsis ruaj khov rau cov kua qaub thiab yooj yim decompose hauv dilute acid.
Daim ntawv thov
Hauv kev lag luam metallurgical, nws yog siv los ua crucible rau melting ntau yam hlau thiab alloys. Nyob rau hauv lub atomic zog kev lag luam, nws yog siv los ua crucible rau melting high-purity uranium thiab thorium. Hauv kev lag luam hluav taws xob, nws yog siv los ua cov khoom siv kub siab, siv ntsuas ntsuas kub tshaj 2000 degree, thiab tseem siv tau ua cov ntaub pua tsev rau ntau qhov kub.
Zirconia thiab magnesium khoom
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Hom / Khoom |
Zirconia cov khoom lag luam |
Cov Khoom Siv Oxide Cov Khoom Siv |
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Crucible, raj |
Thwv cib |
Zirconia Corundum Cib |
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Zaum fe2O3 % |
Tsawg dua los yog sib npaug rau 0. 5 |
Tsawg dua los yog sib npaug rau 0. 5 |
1-2 |
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Zro2 % |
95 |
95 |
16-35 |
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Sii2 % |
Tsawg dua los yog sib npaug rau 0. 4 |
Tsawg dua los yog sib npaug rau 0. 4 |
Tag nrho cov impurities tsawg dua los yog sib npaug rau 0. 8% |
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Meg% |
Ntau dua los yog sib npaug rau 99. 0 |
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Kev Ua Dua Tshiab |
Ntau dua los yog sib npaug rau 2600 |
Ntau dua los yog sib npaug rau 2600 |
Ntau dua los yog sib npaug rau 2700 |
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Bulk densorteg / cm3 |
Ntau dua los yog sib npaug rau 5.8 |
Ntau dua los yog sib npaug rau 4.8 |
Ntau dua los yog sib npaug rau 2.9 |
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Qhov kub tshaj kub compressive zog mpa |
Ntau dua los yog sib npaug rau 48 |
Ntau dua los yog sib npaug rau 30 |
Ntau dua los yog sib npaug rau 40 |
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Thermal poob siab ruaj khov, voj voog (1100 degree dej txias) |
Ntau dua los yog sib npaug rau 10 |
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Daim ntawv thov |
Siv rau ntau zaus cov cub hluav taws xob ua hluav taws xob hauv cov khoom siv hluav taws xob, thermal rwb thaiv tsev cov ntaub ntawv hauv quartz iav ntau lawm, kev ntsuas ntsuas ntsuas ntsuas, thiab lwm yam. |
Siv nyob rau hauv smelting, purification, rwb thaiv tsev cov ntaub ntawv thiab kev tshawb fawb ntawm cov hlau tsis tshua muaj. |
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Cim npe nrov: Zirconia refractory cov khoom siv rau qhov kub thiab txias, Tuam Tshoj Zirconia refractory khoom rau cov chaw ntsuas kub, cov chaw muag khoom, Hoobkas