Mokhoa oa ho lokisa foam ea aluminium

Ka lebaka la lits'ebetso tse fapaneng tsa ho lokisa, foam ea aluminium e ka aroloa ho foam ea aluminium ea sele e koetsoeng, semi-foam ea aluminium e koetsoeng, le bubble-cell aluminium foam ho latela hore na likoti li kopantsoe joang. Mekhoa ea ho lokisa ea foam ea aluminium e ka aroloa ka bongata ka mekhahlelo e meraro: mohato oa metsi, mohato o tiileng, le deposition.

(1) Mokhoa oa mohato oa mokelikeli

Mokhoa oa mokelikeli ke mokhoa oa ho itokisa oa foam oa aluminium o butsoitseng, o nang le monyetla o pharaletseng oa ho etsa lipatlisiso le tebello ea ts'ebeliso, haholo-holo ho kenyelletsa le khase e kenang ka har'a mokhoa oa mokelikeli oa tšepe, mokhoa oa mokelikeli oa tšepe, mokhoa oa ho etsa matsete, le mokhoa oa ho lahla.

Khase e bululelang ka mokhoa oa mokelikeli oa tšepe: ka tšepe e qhibilihisitsoeng ea aluminium e qhibiliha e eketsa likaroloana tse teteaneng, ho ntlafatsa viscosity ea ho qhibiliha, li-thickeners tse atisang ho sebelisoa li na le silicon carbide, alumina magnesium oxide, joalo-joalo Ka mor'a moo, ho tšepe e qhibilihisitsoeng moeeng, naetrojene. , hydrogen, kapa motsoako oa likhase tsena, 'me li lula li sisinyeha, tšepe e qhibilihisitsoeng e ka fumanoa ka mor'a ho pholisa porosity ea 80% ~ 97.5% ea aluminium ea foam, joalo ka ha ho bonts'itsoe ho Setšoantšo sa 1.

Fig.1 Macromorphology ea foam ea aluminium e lokiselitsoeng ka mokhoa oa ente ea khase

(2) Mokelikeli oa tšepe o bululelang mokhoa: ho aluminium e qhibilihisitsoeng e qhibilihisang, eketsa ntho e fokang, ka ho futhumatsa sebolu sa ntho e fokang hore e be tokollo ea khase, katoloso ea mocheso oa khase ea tšepe e qhibilihisitsoeng hore e be foam, ka mor'a hore ho pholile ho ka fumanoa bakeng sa 91% ~ 93 % ea porosity ea aluminium ea foam. Foaming agent e sebedisoang tlhahisong yaaluminium foamTiH2, ZrH2, le CaH2, joalo-joalo.

(3) Mokhoa oa ho lahla hlobo e qhibilihisitsoeng: tšebeliso ea lisebelisoa tsa mokelikeli ho tlatsa li-pores ka foam e nang le spongy, ho thatafalloa ka thepa ea ho hanyetsa, ho futhumatsa ho etsa gasification ea polasetiki le ho fumana sebopeho sa spongy pore ea ho lahla, aluminium e qhibilihisitsoeng e tšolleloa ka hare. ho lahla hona, ho pholile le ho tiisa ho tlosa lisebelisoa tsa refractory, ho ka fumanoa porosity ea 80% ~ 97% ea foam. aluminium.

(4) Mokhoa oa ho lahla: aluminium e nang le mocheso o phahameng oa mocheso tlas'a khatello e itseng e kenang ka har'a lekhalo la ho tlatsa tšepe ho fumana motsoako oa tšepe, ebe o sebelisa ho qoelisoa kapa ho sisinyeha ha ultrasonic le mekhoa e meng ea ho tlosa filler, ho fumana porosity ea 70% kapa joalo kaaluminium ea foam. Li-filler tse sebelisoang ka tloaelo ke letsoai le qhibilihang, libolo tsa ceramic tse sa keneng, libolo tsa corundum tse se nang letho, khabone ea foam, joalo-joalo. Mokhoa ona o ka aroloa ka mefuta e 'meli: mokhoa oa ho lahlela holimo-khatello le mokhoa o fosahetseng oa ho lahla khatello.

2. Mokhoa o tiileng oa mohato

(1) Mokhoa oa metallurgy oa phofo: Mokhoa oa metallurgy oa phofo ke ho kopanya phofo ea aluminium le ntho e fokang (e sebelisoang hangata TiH2) ka tekanyo e itseng, ho lokisa 'mele oa pele ho kokoana tlas'a khatello e loketseng, ebe' mele o hatelitsoeng pele o etsoa. e tsoela pele ho sebetsoa, ​​joalo ka ho roala, ho forging, joalo-joalo, ebe sehlahisoa sena se felileng se kenngoa ka har'a hlobo ea tšepe e hlokahalang, e futhumatsoa ka mocheso o itseng e le hore moemeli ea fokang. e bola ho etsa li-bubble le ho fumana aluminium e foam. Mokhoa ona o rarahane haholoanyane, empa boleng ba sehlahisoa bo phahame 'me ts'ebetso e tsitsitse, kahoo e tsoela pele ka potlako, empa mokhoa ona o ke ke oa hlahisoa ka ho tsoelang pele ka lebaka la theko e phahameng ea thepa e tala.

(2) Powder impregnation slurry mokhoa: lokisa viscosity e itseng ea aluminium phofo slurry, porous polymer foam thepa e qoelisoa ka seretse sena, phofo e kenngoa leboteng la pore ea thepa ea foam ea polymer, ebe o omisa kalafo, ho futhumatsa e le hore ho bola ha mocheso oa thepa ea foam ea polymer, lisebelisoa tsa spongy ts'ebetsong ea ho bola ho bapala karolo ea tšehetso ea nakoana, 'me qetellong phofo ea aluminium e sintered hammoho, ebe e pholile ho fumana porosity ea 70% ho 90% ea Foam ea aluminium.

(3) Eketsa mokhoa oa lisebelisoa tsa bolo: eketsa lisebelisoa tsa bolo kapa bolo e sekoti ka har'a aluminium ho qhibiliha le ho hlohlelletsa, e le hore thepa ea bolo e aroloe ka mokhoa o ts'oanang ka aluminium e qhibilihisang; tsoela pele ho hlohlelletsa le ho pholile ho viscosity e lekaneng, 'me u kenye mohlala ho fumana motsoako oa tšepe ea bolo ea tšepe. Ha thepa e ekelitsoeng ea bolo e le ntho e qhibilihang, mokhoa oa ho qoelisoa o ka sebelisoa ho qhaqha thepa ea bolo, ho fumana aluminium ea foam ea mofuta oa lesoba.

3. mokhoa oa electrodeposition

Foam ka mokhoa oa conductive e le thepa ea cathode, poleiti ea aluminium e hloekileng ea indasteri bakeng sa lisebelisoa tsa anode, ka har'a alkyl aluminium tharollo plating, e le hore aluminium e kenngoe holim'a foam, ka mor'a ho omella ka mocheso o itseng oa mocheso, ho bola ha mocheso oa mocheso. foam,aluminium foam. Mokhoa ona o rarahane mme o hloka ho lokisa mefuta-futa, empa sebopeho sa foam se tšoana haholo. Sebopeho sa foam ea aluminium e lokiselitsoeng ke mokhoa oa electrodeposition e bontšoa ho Setšoantšo sa 2.

Setšoantšo sa 2 Macromorphology ea foam ea aluminium e lokiselitsoeng ke electrodeposition