Foda Alumina ita ce babban kayan da aka yi amfani da shi wajen yin amfani da farin alumina grit da sauran abubuwan gogewa, wanda ke da halaye na juriya ga zafin jiki mai yawa, juriya ga tsatsa da kuma kyawawan halaye. Nano-alumina XZ-LY101 ruwa ne mara launi da haske, wanda ake amfani da shi sosai a matsayin ƙari a cikin resin acrylic daban-daban, resin polyurethane, resin epoxy, da sauransu. Hakanan yana iya zama mai narkewa mai tushen ruwa ko mai, kuma ana iya shafa shi akan kayan shafa gilashi, duwatsu masu daraja, kayan kayan aiki masu daidaito, da sauransu; kuma nau'ikan foda alumina daban-daban suna da amfani daban-daban. Mai zuwa yana mai da hankali kan gabatar da amfani da foda alumina na α, γ, da β.
1.α-alumina foda
A cikin layin foda na nau'in α, ions na oxygen suna da siffar hexagonal, Al3+ yana rarrabawa daidai gwargwado a cikin cibiyar daidaitawa ta octahedral da ions na oxygen ke kewaye da su, kuma kuzarin lattice yana da girma sosai, don haka wurin narkewa da wurin tafasa suna da yawa sosai. α-type oxidation Aluminum ba ya narkewa a cikin ruwa da acid. Ana kuma kiransa aluminum oxide a masana'antar. Ita ce ainihin kayan da ake amfani da su wajen yin aluminum na ƙarfe; ana kuma amfani da shi don yin tubali daban-daban masu hana ruwa, bututun hana ruwa, bututun hana ruwa, da kayan aikin gwaji masu zafi; ana iya amfani da shi azaman mai gogewa, mai hana wuta Babban tsarkin alpha alumina kuma shine kayan da ake amfani da su wajen samar da corundum na wucin gadi, ruby na wucin gadi da saffir; ana kuma amfani da shi don samar da substrate na da'irori masu girma na zamani.
2. Foda γ-alumina
Alumina nau'in γ shine aluminum hydroxide a cikin tsarin bushewar muhalli mai ƙarancin zafin jiki na 140-150 ℃, masana'antu kuma ana kiranta alumina mai aiki, manne na aluminum. Tsarin kimanin ion na oxygen don gefen tsaye na tsakiya an haɗa shi sosai, Al3 + ba ya rarrabawa akai-akai a cikin ion oxygen kewaye da gibin octahedral da tetrahedral. Alumina nau'in γ wanda ba ya narkewa a cikin ruwa, ana iya narkar da shi a cikin acid mai ƙarfi ko maganin alkali mai ƙarfi, za a dumama shi zuwa 1200 ℃ duk za a canza shi zuwa alumina nau'in α. Alumina nau'in γ abu ne mai ramuka, yankin saman kowane gram har zuwa ɗaruruwan mita murabba'i, ƙarfin sha mai aiki mai yawa. Samfurin masana'antu galibi barbashi ne mara launi ko ɗan ruwan hoda mai ɗan ƙarfi tare da juriya mai kyau. A cikin masana'antar tace mai da man fetur, ana amfani da shi galibi azaman mai sha, mai haɓaka mai da mai haɓaka mai; a cikin masana'antu akwai man transformer, wakilin deacidification na man turbine, wanda kuma ake amfani da shi don nazarin launi; A dakin gwaje-gwaje akwai wani abu mai ƙarfi mai ƙarfi wanda ba shi da ƙarfi, ƙarfin bushewarsa bai wuce phosphorus pentoxide ba, bayan an yi amfani da shi a cikin zafin 175 ℃ mai zuwa, ana iya sake farfaɗo da shi kuma a sake amfani da shi.
3.β-alumina foda
Ana iya kiran foda alumina mai aiki da nau'in β. Fukar alumina mai kunnawa tana da ƙarfi sosai, ƙarfin hygroscopic, ba ta kumbura ko fashewa bayan shan ruwa, ba ta da guba, ba ta da ƙamshi, ba ta narkewa a cikin ruwa da ethanol, tana da ƙarfi sosai ga fluorine, galibi ana amfani da ita don cire ruwan sha mai fluoride a wuraren da ke da yawan fluorine.
Alumina mai aiki yana da ikon ɗaukar ruwa daga iskar gas, tururin ruwa da wasu ruwaye. Bayan cikar sha, ana iya farfaɗo da shi ta hanyar cire ruwa ta hanyar dumama shi a kusan 175-315°C. Shafawa da farfaɗowa ana iya yin su sau da yawa. Baya ga amfani da shi azaman abin sha, yana iya shaƙar tururin da aka gurbata daga iskar oxygen, hydrogen, carbon dioxide, iskar gas ta halitta da sauransu. Ana kuma amfani da shi azaman mai kara kuzari da mai kara kuzari kuma azaman mai ɗaukar nauyi don nazarin launuka.