Yintoni igraphitization?
I-Graphitization yinkqubo yoshishino apho ikhabhoni iguqulwa ibe yigraphite.Olu lutshintsho lwe-microstructure olwenzeka kwi-carbon okanye kwi-alloy-alloy steels evezwe kumaqondo okushisa angama-425 ukuya kuma-550 degrees Celsius ixesha elide, zitsho iiyure ze-1,000.Olu luhlobo lwe-embrittlement.Ngokomzekelo, i-microstructure ye-carbon-molybdenum steels ihlala iqulethe i-pearlite (umxube we-ferrite kunye ne-cementite).Xa izinto eziphathekayo zenziwe ngegraphiti, zibangela ukuba i-pearlite idibanise ibe yi-ferrite kunye ne-graphite ehlakazekileyo ngokungaqhelekanga.Oku kubangela i-embrittlement yentsimbi kunye nokunciphisa okuthobekileyo kumandla xa ezi ngqungquthela zegraphite zihanjiswa ngokungaqhelekanga kwi-matrix.Nangona kunjalo, sinokuyithintela i-graphitization ngokusebenzisa izinto ezinokumelana okuphezulu okungaphantsi kwe-graphitization.Ukongezelela, sinokuyiguqula indalo, umzekelo, ukwandisa i-pH okanye ukunciphisa umxholo we-chloride.Enye indlela yokuthintela i-graphitization ibandakanya ukusebenzisa i-coating.Ukukhuselwa kweCathodic yentsimbi.
Yintoni carbonization?
I-Carbonization yinkqubo yoshishino apho i-organic matter iguqulwa ibe yikhabhoni.Izinto eziphilayo esiziqwalaselayo apha ziquka izidumbu zezityalo nezilwanyana.Le nkqubo yenzeka ngokutshabalalisa i-distillation.Le yimpendulo ye-pyrolytic kwaye ithathwa njengenkqubo enzima apho ukuphendulwa kweekhemikhali ezininzi ngaxeshanye kunokubonwa.Ngokomzekelo, i-dehydrogenation, i-condensation, i-hydrogen transfer kunye ne-isomerization.Inkqubo ye-carbonization ihluke kwinkqubo ye-carbonization kuba i-carbonization yinkqubo ekhawulezayo kuba iphendula imiyalelo emininzi yobukhulu ngokukhawuleza.Ngokuqhelekileyo, ubungakanani bobushushu obusetyenzisiweyo bunokulawula iqondo le-carbonization kunye nenani lezinto zangaphandle ezisele.Ngokomzekelo, umxholo wekhabhoni we-residu malunga ne-90% ngesisindo kwi-1200K kunye ne-99% ngesisindo malunga ne-1600K.Ngokuqhelekileyo, i-carbonization yi-reaction exothermic, enokuthi ishiywe ngokwayo okanye isetyenziswe njengomthombo wamandla ngaphandle kokwenza nayiphi na i-carbon dioxide gas.Nangona kunjalo, ukuba i-biomaterial ibonakaliswe kutshintsho olukhawulezileyo kubushushu (njengokudubula kwenyukliya), i-biomaterial iya carbonize ngokukhawuleza kwaye ibe yikhabhoni eqinileyo.
I-Graphitization ifana ne-carbonization
Zombini ziinkqubo ezibalulekileyo zoshishino ezibandakanya ikhabhoni njenge-reactant okanye imveliso.
Uthini umahluko phakathi kwegraphitization kunye necarbonization?
I-Graphitization kunye ne-carbonization zimbini iinkqubo zoshishino.Umahluko omkhulu phakathi kwe-carbonization kunye ne-graphitization kukuba i-carbonization ibandakanya ukuguqula izinto eziphilayo kwikhabhoni, ngelixa i-graphitization ibandakanya ukuguqula i-carbon kwi-graphite.Ngaloo ndlela, i-carbonization yinguqu yeekhemikhali, ngelixa i-graphitization yinguqu ye-microstructure.
Ixesha lokuposa: Sep-29-2021