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Sintered Mullite

Sintered Mullite

I-Mullite yikhompawundi yokubini ekhoyo ngokuzinzileyo phantsi koxinzelelo oluqhelekileyo kwi-Al2O3-SiO2 inkqubo yokubini. Ifomula yeekhemikhali yi-3Al2O3-2SiO2, kwaye ukubunjwa kwethiyori: Al2O3 71.8%, SiO2 28.2%. Xa kuthelekiswa ne-mullite yendalo*, i-mullite esetyenziswa ngokuqhelekileyo yenziwa ngobuchule, kuquka sintered mullite kunye ne-mullite edibeneyo.

I-synthetic mullite yimathiriyeli ekrwada ekumgangatho ophezulu. Ineempawu zokwandiswa okufanayo, uzinzo olugqwesileyo lomothuko we-thermal, indawo yokuthambisa yomthwalo ophezulu, ixabiso elincinci lobushushu obuphezulu, ubulukhuni obuphezulu, kunye nokuchasana kakuhle kwemichiza.

Inkqubo yemveliso kunye nendlela ye sintered mullite:

I-mullite ye-Sintered yenziwe nge-bauxite yendalo ekumgangatho ophezulu njengemathiriyeli ekrwada, kwaye ifakwe kwi-onti ejikelezayo yobushushu obuphezulu obungaphezulu kwe-1750℃ ngenkqubo yokukhetha kunye ne-homogenization yamanqanaba amaninzi.

Iimpawu zokusebenza kunye nokusetyenziswa kwe-sintered mullite:

I-mullite ye-Sintered ineempawu zomxholo ophezulu, ubuninzi bobuninzi obukhulu, uzinzo oluhle lokutshatyalaliswa kwe-thermal, ixabiso elincinci lokunyuka kweqondo lokushisa eliphezulu kunye nokuxhathisa okulungileyo kwimichiza, kwaye umgangatho wayo uzinzile. Kwangaxeshanye, i-sintered mullite yimveliso yeemilo ezahlukeneyo kunye nokungaqiniseki. Eyona imathiriyeli ekrwada yezixhobo ezichasayo, iindawo ezingenanto zococeko, ukuphosa ngokuchanekileyo kunye nezinye iimveliso.

Izalathisi zekhemikhali zomzimba kunye neekhemikhali ze-sintered mullite:

kwiBanga Al2O3% SiO2% Fe2O3% R2O% Ubuninzi bobuninzi (g/cm3) Ukufunxwa kwamanzi(%)
M70 68-72 22-28 ≤1.2 ≤0.3 ≤2.85 ≤3
M60 58-62 33-28 ≤1.1 ≤0.3 ≥2.75 ≤3
M45 42-45 53-55 ≤0.4 ≤1.6 ≥2.50 ≤2