- 14
- Dec
Sintered Mullite
Sintered Mullite
Mullite yog ib qho binary compound uas muaj nyob ruaj khov nyob rau hauv ib txwm muaj siab hauv Al2O3-SiO2 binary system. Cov tshuaj formula yog 3Al2O3-2SiO2, thiab theoretical muaj pes tsawg leeg yog: Al2O3 71.8%, SiO2 28.2%. Piv nrog rau ntuj mullite *, feem ntau siv mullite yog hluavtaws hluavtaws, suav nrog sintered mullite thiab fused mullite.
Synthetic mullite yog cov khoom siv zoo refractory raw khoom. Nws muaj cov yam ntxwv ntawm kev nthuav dav, zoo heev thermal shock stability, siab load softening point, me me kub siab creep nqi, siab hardness, thiab zoo tshuaj corrosion kuj.
Cov txheej txheem ntau lawm thiab txoj kev ntawm sintered mullite:
Sintered mullite yog ua los ntawm cov khoom zoo tshaj plaws ntuj bauxite li raw khoom, thiab yog sintered nyob rau hauv ib tug high-kub rotary kiln saum toj no 1750 ℃ los ntawm kev xaiv thiab ntau theem homogenization.
Kev ua tau zoo thiab kev siv ntawm sintered mullite:
Sintered mullite muaj cov yam ntxwv ntawm theem siab cov ntsiab, loj loj ceev, zoo thermal poob siab stability, me me kub nkag nqi thiab zoo tshuaj xeb tsis kam, thiab nws zoo yog ruaj khov. Nyob rau tib lub sijhawm, sintered mullite yog tsim los ntawm ntau yam duab thiab tsis paub tseeb. Cov khoom siv raw khoom zoo tshaj plaws rau cov khoom siv refractory, cov khoom siv huv huv blanks, precision casting thiab lwm yam khoom.
Lub cev thiab tshuaj indexes ntawm sintered mullite:
qib | Al2O3% | SiO2% | Fe 2O3% | R2O% | Qhov ceev (g / cm3) | Kev nqus dej (%) |
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 |