Processus de Formation de Alumina et des points techniques clés

Alumina (Al2O3), di meceer seramik bu am solo ci usine yi, ñu ngi koy jëfandikoo bu bari ci elektronik, masin, produit chimik, ak aerospace ndax dëgëraayam bu rëy, baña yàqu bu baax, baña yàqu ci tàngoor wu metti, ak stabilite chimik. Performance produit alumina a ngi aju ci composition chimique bi kese waaye a ngi aju itam ci anam wi ñu koy defaree. Formaasioŋ bu jaar yoon mooy tax yaram wu wert alumina am dëgëraay bu maase, dëgër bu baax, ak dëgëraay bi war ngir sintering bi ci topp.

Fi ñu tolli nii, anam yi gëna am solo ngir defar aluminium ñooy pressing bu waw, pressing isostatik, fonte buy gliise, extrusion, ak forse matris bu tàng. Pressing bu waw benn la ci xeeti pressing yiñ gëna xam, méngoo ak komposant yu am jëmm yu yomb ak dimensioŋ yu gëna jub. Ni ñu koy defee mooy jaxase poudre alumine ak tuuti liant ba noppi ñu def ci pression (fukki wala téemeeri MPa) ci biir benn moule ngir génne produit bi. Pressing bu waw amna njariñ ci liggéey bu baax ak jumtukaay yu yomb, waaye distribution densité bu yaram wu wert mën na baña tolloo, rawatina ci komponent yu am formu - yu jafee xam.

Pressing isostatic baaxna ci aplikaasioŋ yiy laaj yaram wu wert wu yaatu, lu ci melni roulement ceramic ak electrode yu am voltage bu yéeg. Ni ñu koy defee mooy ñu dugal poudre alumine ci biir moule elastik ba noppi ñu bàyyi ko ci ndox mu am pressure bu yéeg (lu melni ndox wala diw). Densification ñu ngi koy amee ci presion bu maase (100-300 MPa) ci wàll yépp. Pressing isostatic dafay defar yaram wu wert ak doole ju rëy ak distribution densité bu maase, waaye dafay laaj dugal xaalis bu bari ci ekipmaa ak njëgu liggéey bi.

Ngir jëmm yu jafee xam wala komponent yu am kuur yu woyof, fundi slip ak fundi tàng dañu am njariñ. Slip casting dafay jëfandikoo fluidite bi ci slurry alumina bi, loolu mooy tax slurry bi gëna dëgër ndànk-ndànk jaaraleko ci absorption ndox mi ci biir moule de plâtre bi. Loolu moo tax mu mëna jëfandikoo ci pàcci seramik yu yaatu te sew. Ci beneen wàll bi, fundi tàngoor dafay jëfandikoo tàngoor ngir seey liant bu am paraffin, suko defee poudre alumina bi fees ci moule bi ci suufu pression. Loolu moo tax mu mëna ànd ak komponent yu ndaw, yu jafee xam, ak yu jaar yoon.

Rax ci dolli, ci diiru liggéeyum moulage alumina, tànneef liant bi, dayo particule bi, ak saytu presion moulage bi, ñoom ñépp dañu am njeexital yu am solo ci performance produit bi mujj. Wax ak sintering yi ci topp dañu am solo itam ngir mëna wax ni yaram wi wert amna dëgëraay biñ soxla ak màndarga mekanik yi ginaaw sintering bi.

Ci gàttal, tànneef ci liggéeyum moulage alumina dafay laaj nga bàyyi xel bu baax ci mbir yu melni jëmmu produit bi, njubte gi ci dimension yi, njariñu liggéey bi, ak njëg bi. Ak yokkuteg science ci matériel ceramic, xaralay moulage yu bees yu melni moulage par injection ak impression 3D ñu ngi ko jëfandikoo ndànk-ndànk ngir defar ay produit alumina, di gëna yaatal barabu jëfandikoo gi.