Superfine alumina ke thepa e tala ea bohlokoa bakeng sa lirafshoa tse sebetsang.Superfine alumina phofo xz-L20, boholo ba likaroloana 100 nm, 'mala o mosoeu, 99% ea litaba tse tiileng.E ka ekeletsoa ho Li-resin tse sa tšoaneng tse thehiloeng metsing, ka har'a li-resin tse thehiloeng ka oli, li-solvents le li-rubber ka tekanyo ea ho eketsa 3% -5%, e ka ntlafatsang haholo boima ba thepa ho fihlela ho 6-8H kapa ho feta.
Grain Q-A1203, e nang le lik'hemik'hale tse tlaase le mocheso o phahameng oa ho hanyetsa, ha se alumina e omeletseng, 'me ha e na ts'ebetso ea ho thusa.E na le matla a ho hanyetsa mocheso, sebopeho se setle, mohato o tsitsitseng oa kristale, boima bo phahameng le botsitso bo botle, 'me e ka sebelisoa haholo ho matlafatsa le ho tiisa lipolasetiki tse fapa-fapaneng, rabara, lirafshoa, lisebelisoa tsa refractory le lihlahisoa tse ling, haholo-holo ho ntlafatsa ho teteana, Qetello, mokhathala o chesang le o batang, ho tiea ha fracture, khanyetso ea lirafshoa le ho hanyetsa ha thepa ea polymer.