Ibhulogi

I-nickel foam iyinto ephawulekayo eye yathola ukunakwa okubanzi ezimbonini ezihlukahlukene ngenxa yezakhiwo zayo eziyingqayizivele kanye nohlu olubanzi lwezinhlelo zokusebenza. Le nto enezimbobo kakhulu futhi eqhubayo ibonakale ibalulekile emikhakheni eyahlukene, kusukela ekugcineni amandla kanye nokuguqulwa kuya ekuhlungeni nasekufakeni i-catalysis. Kule bhulogi, sizohlola umhlaba othakazelisayo wegwebu le-nickel namandla awo okuguqula ubuchwepheshe obuningi.

Leli phepha lifingqa izici ezinhle kakhulu zezinsimbi zegwebu kanye nemininingwane ngemiphumela yokuthuthukiswa kwamanje kwezinsimbi zegwebu, ikakhulukazi igwebu le-titanium, njengezinto ezimelana nomthelela we-aerospace, izinto ze-biomedical, izinto zokuhlunga ezishisa kakhulu nezisetshenziswa zebhethri, njll., kanye izindawo ezizothuthukiswa.

Igwebu le-aluminium ukwengeza izithasiselo kumaphrofayili e-aluminium ehlanzekile noma e-aluminium, ngemuva kokugwaza, ngaphezu kokucabangela izici zezinto zensimbi namabhamuza. Inokuqina okuphansi, ukumelana nomthelela omkhulu, ukumelana nokushisa, ukuphepha komlilo, ukumelana nokugqwala, ukwahlukanisa umsindo, ukuguquguquka okuphansi kwe-thermal, izinto ezinhle zokuvikela kazibuthe, ukumelana nokuguga okuqinile, amandla okuhlunga, ukwenziwa kalula, ukuyifaka kalula, ukubumba okunembayo okuphezulu, kanye kungenziwa phezu kopende.

Igwebu le-nickel liyinto ekwazi ukungeneka kakhulu, enobukhulu obuphansi, enezimbobo ezintathu, eyinto entsha futhi ethuthukayo kusayensi yezinto zamanje. Isakhiwo segwebu sinikeza insimbi ye-nickel isakhiwo se-open-cell, esinikeza ukufinyeleleka okuhle kakhulu kanye nezakhiwo ezibalulekile zokudlulisa ukushisa kanye nezindawo zokulahla.
Igwebu le-nickel lenziwa nge-electroplating ohlakanipho lwama-polymers akhethekile anesakhiwo senethiwekhi esinezinhlangothi ezintathu, njenge-polyurethane, i-polyester polyurethane namanye ama-polymers akhethekile (izipontshi). Ngemuva kokucwecwa, umkhiqizo wokugcina wegwebu lensimbi wenziwa ngokushisa i-polymer yangaphakathi nokunciphisa ama-oxide ensimbi, futhi ulolongwa ngomshini ngokwelashwa kokushisa kwamakhemikhali.
Igwebu le-nickel, elinezici zalo ezingasindi nezisebenza ngogesi, lingesinye sezici ezibalulekile zokwakha ama-electrolyzer e-hydrogen e-AEM, ehlinzeka ngesixazululo esikahle sokukhiqiza i-hydrogen ephumelelayo nesimeme.

Umehluko omkhulu phakathi kwamaphaneli e-aluminium foam kanye ne-aluminium veneer yizinto ezibonakalayo, ukushuba, isisindo, amandla, ukumelana nomlilo, kanye nobubanzi bokusetshenziswa.

Amagwebu ensimbi aheha ukunakwa ezinhlelweni zobunjiniyela ngenxa yokuminyana kwawo okuphansi, isilinganiso sevolumu ephezulu kanye nokuhamba okuphezulu kokushisa. Embonini yokushisisa nokupholisa, izishintshisi zokushisa ezihlangene, izindawo ezishisayo zelanga kanye nesitoreji samandla ashisayo yizikhombisi-ndlela ezi-3 ezibalulekile.

Igwebu le-nickel liyinto enhle kakhulu emunca umsindo ene-coefficient ephezulu yokumunca kumafrikhwensi aphezulu; ukusebenza kwayo okumunca umsindo kumaza aphansi kungathuthukiswa ngokuklanywa kwesakhiwo esimunca umsindo. Igwebu le-nickel futhi lingenye yezinto ezihamba phambili ze-electrode zamabhethri e-cadmium-nickel namabhethri e-hydrogen-nickel. I-nickel foam ngokwayo inezici eziningi ezinhle kakhulu.

igwebu lensimbi lilungiswa ngokucwilisa, i-electroplating, i-pressure cast, kanye nezindlela zokugwaza. Phakathi kwazo, indlela ye-electroplating kanye nendlela ye-powder metallurgy ngaphansi kokuhlukaniswa kweziqephu zendlela ye-foaming zivamile. Owokuqala ngokungeza i-ejenti ekhihlizayo ensimbi encibilikisiwe ukukhiqiza igwebu lensimbi; okokugcina ngenqubo ye-electrodeposition kuhlaka lwamathambo oluyigwebu le-polyurethane olukopishelwe kugwebu lensimbi. Njengamanje, i-foam yensimbi isetshenziswe kabanzi ku-aluminium nickel, ithusi kanye nama-alloys ayo, ngaphezu kwensimbi, i-magnesium, i-titanium, insimbi, umthofu nokunye futhi kunendawo ethile yesicelo,

I-Metal Foam iyinsimbi eyinsimbi enezici ezikhethekile, ezinezici zensimbi ne-foam, yingakho igama le-foam metal. Ngakho, ingabe igwebu lensimbi liyinsimbi?
Impendulo ithi yebo. I-Metal Foam yenziwe ngezinto zensimbi, ezinezakhiwo zensimbi ezifana ne-electrical conductivity, conductivity ezishisayo, amandla nokunye. Ngesikhathi esifanayo, i-foam yensimbi inenani elikhulu lama-pores amancane ngaphakathi, okwenza isakhiwo esifana ne-foam, okwenza i-foam yensimbi ibe nempahla yesisindo sokukhanya, amandla athile aphezulu, ukushisa okuhle kokushisa nokunye.

I-Metal Foam inesakhiwo esiyingqayizivele, esihlanganisa izici zensimbi kanye nezakhiwo ezisebenzayo zezinto ezinama-porous. Igwebu lensimbi lingelezinto zensimbi ezinama-porous, i-porosity yangaphakathi ingaba phezulu ku-90% noma ngaphezulu, ukwakheka kufana "negwebu" noma "ikhekheba lezinyosi", kuphula umqondo wendabuko wesakhiwo esiminyene sensimbi, zombili izici zensimbi "eziqinile". kanye nezici ze-bubble "zokukhanya", ukuhlanganiswa okusha kwesakhiwo-umsebenzi wezinto zensimbi. “Yephula umqondo wendabuko wesakhiwo esiminyene sensimbi futhi inazo zombili izici zensimbi nebhamuza, okuwuhlobo olusha lwempahla yensimbi enokuhlanganiswa komsebenzi wesakhiwo.