Ukuphonononga ixabiso lezinto zesinyithi ze-foam

I-Metal foam luhlobo lwemathiriyeli yesinyithi enombhobho eyenza ubuninzi bezinto ezinamacala amathathu anamacala amathathu kwi-matrix yesinyithi, ekwabizwa ngokuba yi-foam yesinyithi enombhobho, ethe yafumana ingqalelo ngokubanzi ekhaya nakwamanye amazwe ngenxa yokudityaniswa kwayo kweempawu zetsimbi kunye nomzimba okhethekileyo. iimpawu ze-nonmetals. Kwiminyaka engama-50 edlulileyo, kukho inkqubela phambili enkulu ekuphuhliseni i-foam yensimbi, uphuhliso lwesicelo kunye nofundo lwethiyori yeempawu zayo zesakhiwo.
Indibaniselwano "igwebu" kunye "metal" iikhonsepthi ezimbini, asinakunceda kodwa ukucinga ukubaigwebu lesinyithiimpahla idibanisa iingenelo ezichaphazelekayo kwezi zinto zimbini: ukugcina i-ductility egqwesileyo yentsimbi, ukuwelda kunye nokuhamba kombane ngaxeshanye, kunye nokufunxa amandla kunye nokufunxa ukothuka, ukucutha ingxolo ye-acoustic, ukuphefumla kunye nokungena kwamanzi, kunye nezinye iingenelo ezikhethekileyo.
Izinto ze-Metal foamiqulethe i-metal skeleton pores, umbutho u-inhomogeneous ngokugqithisileyo, xa uphantsi koxinzelelo lwangaphandle, kukho izigaba ezithathu zokuguqulwa, ezizezi, inqanaba le-elastic deformation, inqanaba lokutyumza kunye nenqanaba elihlangeneyo, ngoko ke xa i-foam yensimbi iphantsi kwempembelelo, i-strain ngokucacileyo isala emva koxinzelelo, kwi-stress-strain curve iqulethe ixesha elide lendawo ye-plateau. Ayinako kuphela ukufunxa amandla amaninzi, kodwa iyakwazi ukumelana noxinzelelo oluphezulu olutshabalalisayo, yimathiriyeli enempembelelo entle kakhulu. Kuxelwa ukuba ubuninzi be-0.05 ~ 0.15 ye-foam ye-aluminium inokuthatha amandla angama-20 ~ 180 MJ / m2. Ukusetyenziswa kwempembelelo yayo ebalaseleyo ukumelana, ukuze iugwebu aluminiyaminokusetyenziswa njenge-bumper yemoto, izixhobo zokumisa kwi-spaceship, i-elevator conveyor security cushions, iindidi zeebhokisi zokupakisha, kunye neerokethi kunye neenjini zejethi, izinto zokukhusela. I-Metal foam ihlala ibekwe embindini wesandwich yeepleyiti ezimbini zokufunxa ukothuka kunye neenjongo zobuhle.
Ngokunxulumene nezinye iintlobo zezinto ezivuzayo, i-foam yesinyithi ine-conductivity elungileyo yombane, kunye nesakhono esithile sokuzimela kunye neengenelo zommandla omkhulu wokubonelela ngojongano olubanzi lwendawo yokudluliselwa kweekhemikhali, i-porous foam electrode structure inokuphucula kakhulu i-porosity. I-electrode, enokuzaliswa ngezinto ezisebenzayo ngakumbi, yonyusa umthamo webhetri ukuze i-electrode yoxinaniso lokwenyani lwangoku luncitshiswe kakhulu kufundo lwamandla athile aphezulu, ubomi obude, ibhetri ekhaphukhaphu izixhobo ze-electrode. bonelela ngokunokwenzeka. Ngaloo ndlela, i-foam yensimbi iba yinto ebalaseleyo ye-electrode, efanelekileyo kwiintlobo ezahlukeneyo zokugcina iibhetri, iiseli zepetroli, iibhetri zomoya kunye neeseli zelanga.
Isiponjiigwebu lesinyithiizixhobo ngokubanzi zineepropati ezintathu zilandelayo ngexesha elinye: ukumelana nobushushu obuphezulu, nokuba ubushushu bufikelela kwindawo yokunyibilika kwesiseko se-alloy ayinyibiliki; kwangaxeshanye, inomphezulu wamathambo agudileyo kunye nezinto ezixubeneyo, kunye nesinyithi esingenamaqhekeza esineempawu ezifanayo zokumelana nobushushu kunye ne-anti-oxidation; i-open-pore isakhiwo sinokungena. Olu hlobo lwezinto ze-titanium foam, ezidibanisa ukumelana nobushushu obuphezulu, ukuxhathisa i-oxidation kunye nokungena, ingasetyenziselwa ukuhluza uthuli phantsi kweemeko eziphezulu zokushisa. Ulwakhiwo lufana, ukuhanjiswa kobungakanani bepore kumxinwa, kwaye ukusebenza kakuhle kokwahlula kuphezulu.