Aluminium khabhayithi

Aluminium khabhayithi le carbon kabini ezingaphiliyo-aluminiyam compound. ifomula yayo chemical njengoko bhala Al4C3, ibonakala ngathi ngembonakalo yikristale baluthuthu emthubi okanye mdaka ukuba igridi ezintsonkothileyo zokusebenza. Liyakwazi ukumelana ukunyuka kwamaqondo obushushu ku 1400 ° C kwi ukuxinana 2,36 g / cm³. Njengenxalenye emkhusaneni zayo athom carbon akhoyo njengoko anions carbon ekhethekileyo. Le compound ilungisiwe yi abasabela ngqo carbon nge-aluminiyam kwi arc eziko, oku kwakhona isixa ezingephi ubumdaka abakhoyo calcium carbide imvelaphi zobugcisa.

Khabhayithi aluminiyam: Iimpawu noSetyenziso

imveliso aluminium Electrolytic ibandakanya Ukuqhela umchiza njenge imveliso umhlwa kwi electrode mifanekiso. Kwimeko apho carbide aluminium wasabela ngamanzi okanye yaze yangxenga ifuthe lomanyano acid, methane kwakheka. Ngaphaya koko, i-compound idityaniswe oksijini hydrogen, yaye kwimeko yendlela ngamanzi phule lo hayidroksayidi sodium kwakhiwa ityuwa ezintsonkothileyo, ebizwa tetragidroksoalyuminatom methane kesodiyam. Ngokwendalo, umchiza uye iipropati ezithile emzimbeni, libhekisela -indices zokunganyangeki enxulumene sodium D-line, yaye ifikelela 20 ° C. Ngelo xesha linye athathe ingqalelo umgangatho amandla Gibbs kunye entropy nomgangatho ukubunjwa, zalathisi 196 kunye ukufikelela 88,95Dzh / Mol / K. Ukulungiselela le compound kunokwenzeka nemveliso okungafunwayo kwi ngayo imichiza entsonkothileyo.

Ngokukodwa, zisasilela iintsimbi matrix esekelwe kwi-aluminiyam matrix luqiniswe carbides zesinyithi ezifana boron khabhayithi kunye lesilicon khabhayithi, inokuba negalelo carbide aluminiyam njengento ezingathandekiyo. Isimo esinjalo kunokwenzeka kwimeko carbon ifayibha, apho, xa ungena awasabela kunye matrix aluminiyam kwiqondo lobushushu kunene 500 ° C, nayo inika compound njongo. Ngexesha sicatshulwa basabela njani yemichiza phakathi aluminiyam kwaye waphosa lesilicon khabhayithi layer kusenokuba khabhayithi ye-aluminiyam, uya kuhlawula silicon carbide yamasuntswana nokunciphisa ngamandla eziphathekayo.

Noko ke, le isiphumo kungancitshiswa ngama- yokutyabeka amasuntswana lesilicon oxide ofanelekileyo okanye preoxidation ngenxa yokuzimanya dust ngeso lenyama. Ukuze sibone indlela amanzi iqulethe eziFihliweyo, umchiza ufakwa haydrolisis, ebangela methane aluminium carbide. Kulo mzekelo, i-compound olusetyenziswa kwemichiza reagent kwi indlela kunye compound abanqunyanyisiweyo ngamanzi unika eziFihliweyo methane. Aluminium khabhayithi, saa kwi isizalo aluminiyam, inceda ukulondoloza lexinene umbandela, ingakumbi xa kudityaniswe amasuntswana of lesilicon khabhayithi.

izinto Composite ye-aluminiyam khabhayithi zingafumaneka ngokusebenzisa aluminium mechanical esekelwe kwi-aluminiyam umgubo kunye amasuntswana mifanekiso. Kunye nale compound lisetyenziswa njengendlela esirhabaxa izixhobo ukusika-high speed, lubanike nobulukhuni netopazi. Enye intsimi kwesicelo ke ambaxa umdlalo, nantsi ivumela ukufumana isiphumo a sinambuzane, nto leyo ekhokelele isahlakalo ngokugqithisileyo iintlantsi. Qaphela ukuba ngamaxesha ahlukeneyo umdlalo, uye bekusoloko isetyenziswe kunye ngegalelo lazo. Ngokubanzi, oku ezimbaxa ifumana isicelo ngokubanzi kushishino kwemichiza kunye yasendle nemveliso. Oku kungenxa iimpawu eekhemikhali carbide aluminiyam, ngokubonelela iimpawu zayo ezizodwa ezingezizo uphawu ezinye iintlobo qela iikhompawundi khabhayithi.