Ukuhlola inani lezinto ze-foam zensimbi

Igwebu lensimbi luhlobo lwensimbi enezimbotshana ezakha izakhiwo eziningi ezinezinhlangothi ezintathu ze-spatial mesh ku-matrix yensimbi, eyaziwa nangokuthi igwebu lensimbi elinombobo, elithole ukunakwa okujwayelekile ekhaya naphesheya ngenxa yokuhlanganiswa kwayo kwezakhiwo zensimbi nokunye okukhethekile ngokomzimba. izakhiwo ze-nonmetals. Eminyakeni engu-50 edlule, kube nenqubekelaphambili enkulu ekuthuthukisweni kwegwebu lensimbi, ukuthuthukiswa kwesicelo kanye nocwaningo lwethiyori lwezakhiwo zalo zesakhiwo.
Inhlanganisela "foam" kanye "metal" imiqondo emibili, asikwazi ukuzibamba sicabange ukuthiigwebu lensimbiimpahla ihlanganisa izinzuzo abafanele zalezi zinto ezimbili: nokugcina ductility omuhle kakhulu metal, weldability kanye conductivity kagesi ngesikhathi esifanayo, nokumuncwa amandla kanye ukushaqeka ukumuncwa, ukuncishiswa komsindo acoustic, okuphefumulayo futhi amanzi permeable, kanye nezinye izinzuzo ezikhethekile.
Izinto ze-Metal Foamiqukethe ama-metal skeleton pores, inhlangano i-inhomogeneous ngokwedlulele, lapho ingaphansi kwengcindezi yangaphandle, kunezigaba ezintathu zokuguquguquka, okungukuthi, isiteji sokuguqulwa kwe-elastic, isiteji sokuchotshozwa esiphukayo kanye nesiteji esihlangene, ngakho-ke lapho izinto ze-foam zensimbi zithinteka, i-strain ngokusobala isalele ngemuva kwengcindezi, kwijika le-stress-strain liqukethe isikhathi eside sendawo yethafa. Akukona nje kuphela ukukwazi ukumunca amandla amaningi, kodwa futhi ikwazi ukumelana nengcindezi ephakeme elimazayo, iyinto enezinto ezinokumelana nomthelela omuhle kakhulu. Kubikwa ukuthi isilinganiso sokuminyana sika-0.05 ~ 0.15 segwebu le-aluminium singamunca amandla angama-20 ~ 180 MJ / m2. Ukusetshenziswa kokumelana nomthelela omuhle kakhulu, ukuze ii-aluminium foamingasetshenziswa njengobhampa wemoto, igiya lokuhlala le-spaceship, amakhushini okuphepha okuthutha i-elevator, amabhokisi okupakisha ahlukahlukene, kanye namarokhethi nezinjini zejethi, izinto zokuzivikela. Igwebu lensimbi ngokuvamile litholakala maphakathi nesemishi lamapuleti amabili ukuze limunce ukushaqeka kanye nezinjongo zobuhle.
Uma kuqhathaniswa nezinye izinhlobo zezinto ezinama-porous, igwebu lensimbi linokuhamba kahle kagesi, linekhono elithile lokuzisekela kanye nezinzuzo zendawo enkulu ukuze kunikeze indawo ebanzi yokudlulisa ukushaja kwamakhemikhali, isakhiwo se-foam electrode esinezimbobo singathuthukisa kakhulu i-porosity. i-electrode, engagcwaliswa ngezinto ezisebenza kakhulu, ikhulisa amandla ebhethri ukuze i-electrode ye-real density yamanje inciphe kakhulu ukuze kufundwe amandla athile aphezulu, impilo ende, izinto ze-electrode yebhethri engasindi nikeza ithuba. Ngakho-ke, i-foam yensimbi iba yinto enhle kakhulu ye-electrode, efanelekile izinhlobo ezahlukene zamabhethri okugcina, amaseli kaphethiloli, amabhethri omoya namaseli elanga.
Isipontshiigwebu lensimbiizinto zokwakha ngokuvamile zinezindawo ezintathu ezilandelayo ngesikhathi esisodwa: ukumelana nokushisa okuphezulu, ngisho noma izinga lokushisa lifinyelela iphuzu lokuncibilika le-alloy yesisekelo lingancibiliki; ngesikhathi esifanayo, inohlaka lwamathambo abushelelezi kanye nezinto ezilinganayo, kanye nensimbi engenazimbotshana ecishe ibe nezindawo ezifanayo ezikwazi ukumelana nokushisa kanye ne-anti-oxidation; isakhiwo se-open-pore sinokungena. Lolu hlobo lwezinto ezibonakalayo ze-titanium foam, ezihlanganisa ukumelana nokushisa okuphezulu, ukumelana ne-oxidation kanye nokuqina, zingasetshenziselwa ukuhlunga uthuli ngaphansi kwezimo zokushisa eziphezulu. Isakhiwo siyafana, usayizi wembobo wokusabalalisa uncane, futhi ukusebenza kahle kokuhlukanisa kuphezulu.