- 14
- Dec
Sintered Mullite
Sintered Mullite
Mullite waa iskudhis binary ah oo si adag ugu jira cadaadiska caadiga ah ee nidaamka binary Al2O3-SiO2. Qaabka kiimikaadku waa 3Al2O3-2SiO2, halabuurka aragtiduna waa: Al2O3 71.8%, SiO2 28.2%. Marka la barbar dhigo mullite dabiiciga ah*, mullite-ka caadiga ah ee la isticmaalo ayaa si macmal ah loo farsameeyay, oo ay ku jiraan mullite oo sinteed iyo mullite isku dhafan.
mullite synthetic waa walxo ceeriin ah oo tayo sare leh. Waxay leedahay sifooyinka balaadhinta labbiska, xasilloonida shoogga kulaylka oo aad u wanaagsan, barta jilcisa culayska sareeyo, qiime yar oo heerkul sare ah oo gurguurta, adayg sare, iyo caabbinta daxalka kiimikada wanaagsan.
Habka wax soo saarka iyo habka of mullite oo sinteed:
mullite Sintered waxay ka samaysan tahay bauxite dabiici ah oo tayo sare leh sida walxo ceeriin ah, waxaana lagu dhex miijiyay foorno heerkul sarreeya oo ka sarreeya 1750 ℃ iyada oo loo marayo habka xulashada iyo isku-duubnaanta heerarka badan.
Astaamaha wax qabadka iyo adeegsiga mullite sintered:
Sintered mullite waxay leedahay sifooyinka maadada sare, cufnaanta bulk weyn, xasilloonida shoogga kulaylka wanaagsan, qiimaha yar ee heerkulka sare ee gurguurta iyo caabbinta daxalka kiimikada wanaagsan, iyo tayada waa mid deggan. Isla mar ahaantaana, mullite sintered waa soo saarista qaabab kala duwan iyo hubanti la’aan. Walxaha ceeriin ee ku habboon alaabta dib-u-celinta, weelasha nadaafadda ee bannaan, shubista saxda ah iyo alaabada kale.
Tilmaamaha kiimikaad ee jirka iyo kiimikaad ee mullite sintered:
Fasalka | Al2O3% | SiO2% | Fe2O3% | R2O% | Cufnaanta weyn (g/cm3) | nuugista biyaha(%) |
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 |