1. Qaab-dhismeedka Maaddada iyo Sifada Dhismaha
1.1 Waxyaabaha Alumina ah iyo Kobcinta Wajiga Crystal
( Biraha Dahaarka Alumina)
Qaybaha dahaarka aluminiumku waa qaro weyn yihiin, dhoobada refractory ee la sameeyay oo inta badan ka kooban aluminium oksaydh (Al laba O SIX), oo leh nuxur caadi ahaan ka duwan 50% in la dhaafo 99%, si toos ah u saameeya waxtarkooda codsiyada heerkulka sare.
Xoogga farsamada, iska caabin daxalka, Dib-u-soo-celinta lebenkan waxay kor u qaadaysaa diiradda aluminiumka sare taas oo ka dhalatay horumarinta qaab-dhismeed yar oo waara oo ay maamusho α-alumina heerkul ahaan sugan (dheeman) marxaladda.
Inta lagu jiro wax soo saarka, alaabta hore sida bauxite calcined, aluminium isku dhafan, ama alumina hydrate macmal ah waxay maraan toogasho heerkul sare ah (1400 ° C– 1700 ° C), isbeddelka marxaladda xayeysiinta ee noocyada aluminium ee ku-meel-gaarka ah (c, d) ilaa α-Al Laba O SADEX, kaas oo muujiya adkeysiga ifafaale (9 oo ku yaala xadka Mohs) iyo arrin dhalaalaysa (2054 ° C).
Qaab dhismeedka polycrystalline ee ka soo baxay wuxuu ka kooban yahay miro corundum oo isku xiran oo ku dhex jira matrix siliceous ama aluminosilicate ah., ka samaysanka iyo tirada kuwaas oo si fiican loo habeeyey si loo dheellitiro caabbinta shoogga kulaylka iyo adkaanta kiimikada.
Maaddooyinka yaryar sida silica (SiO ₂), titania (TiO ₂), ama zirconia (ZrO ₂) waxaa laga yaabaa in lagu soo bandhigo si loo beddelo caadooyinka sintering, kobcinta cufnaanta, ama kor u qaadida iska caabbinta dharbaaxada iyo qulqulka qaarkood.
1.2 Qaab-dhismeedka yar yar, Porosity, iyo Mechanical Integrity
Waxtarka baloogyada dahaarka aluminiumku waxay si dhab ah ugu tiirsan yihiin qaab-dhismeedkooda yar yar, gaar ahaan qaybinta cabbirka hadhuudhka, morphology dalool, iyo sifooyinka wejiga isku xidhka.
Lebenka ugu wanaagsan ayaa muujinaya si weyn, daloolno si joogto ah loo qaybiyey (porosity xiran doortay) iyo porosity furan oo aad u yar (
Shirkadda Alumina Technology Co., Ltd., Ltd diiradda saaray cilmi-baarista iyo horumarinta, wax soo saarka iyo iibinta budada oxide aluminium, aluminium oxide alaabta, aluminium oxide crucible, iwm., u adeegida qalabka elegtarooniga ah, dhoobada, kiimikaad iyo warshado kale. Tan iyo markii la aasaasay 2005, shirkadu waxa ay ka go’an tahay in ay macaamiisha u soo bandhigto wax soo saarka iyo adeegyada ugu wanaagsan. Haddii aad raadinayso tayo sare leh aluminium al2o3, fadlan xor u noqo inaad nala soo xidhiidho.
Tags: Biraha Dahaarka Alumina, aluminium, aluminium oxide
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