Iyini i-graphitization?
I-Graphitization inqubo yezimboni lapho ikhabhoni iguqulwa ibe yi-graphite. Lolu wushintsho lwe-microstructure olwenzeka ku-carbon noma ezinsimbi ezinengxubevange ephansi ezivezwe emazingeni okushisa angama-425 kuya ku-550 degrees Celsius isikhathi eside, yithi amahora angu-1,000. Lolu uhlobo lwe-embrittlement. Isibonelo, i-microstructure yezinsimbi ze-carbon-molybdenum ngokuvamile iqukethe i-pearlite (ingxube ye-ferrite ne-cementite). Uma impahla yenziwe i-graphitized, ibangela i-pearlite ukuthi ibole ibe i-ferrite kanye ne-graphite ehlakazekile ngokungahleliwe. Lokhu kubangela i-embrittlement yensimbi kanye nokunciphisa okuthobekile kwamandla lapho lezi zinhlayiya ze-graphite zisatshalaliswa ngokungahleliwe kuyo yonke i-matrix. Kodwa-ke, singakwazi ukuvimbela i-graphitization ngokusebenzisa izinto ezinokumelana okuphezulu okungazweli kakhulu ku-graphitization. Ngaphezu kwalokho, singakwazi ukuguqula indawo ezungezile, ngokwesibonelo, ngokukhuphula i-pH noma ngokunciphisa okuqukethwe kwe-chloride. Enye indlela yokuvimbela i-graphitization ihilela ukusebenzisa i-coating. Ukuvikelwa kwe-Cathodic yensimbi eyinsimbi.
Iyini i-carbonization?
I-Carbonization inqubo yezimboni lapho izinto eziphilayo ziguqulwa zibe yikhabhoni. Izinto eziphilayo esizicabangela lapha zihlanganisa izidumbu zezitshalo nezilwane. Le nqubo yenzeka nge-distillation ebhubhisayo. Lokhu kusabela kwe-pyrolytic futhi kubhekwa njengenqubo eyinkimbinkimbi lapho ukusabela kwamakhemikhali okuningi ngesikhathi esisodwa kungabonwa. Isibonelo, i-dehydrogenation, condensation, i-hydrogen transfer kanye ne-isomerization. Inqubo ye-carbonization ihlukile kunqubo ye-carbonization ngoba i-carbonization iyinqubo esheshayo ngoba iphendula ama-oda amaningi obukhulu ngokushesha. Ngokuvamile, inani lokushisa elisetshenzisiwe lingalawula izinga le-carbonization kanye nenani lezinto zangaphandle ezisele. Isibonelo, okuqukethwe kwekhabhoni yensalela cishe ku-90% ngesisindo ku-1200K futhi cishe u-99% ngesisindo cishe ku-1600K. Ngokuvamile, i-carbonization iyindlela yokusabela exothermic, engashiywa yona ngokwayo noma isetshenziswe njengomthombo wamandla ngaphandle kokwenza noma yimuphi umkhondo wegesi ye-carbon dioxide. Kodwa-ke, uma i-biomaterial ibhekene nezinguquko ezisheshayo ekushiseni (njengokuqhuma kwe-nuclear), i-biomaterial izokhipha ikhabhoni ngokushesha okukhulu futhi ibe ikhabhoni eqinile.
I-Graphitization ifana ne-carbonization
Zombili ziyizinqubo ezibalulekile zezimboni ezibandakanya ikhabhoni njenge-reactant noma umkhiqizo.
Uyini umehluko phakathi kwe-graphitization ne-carbonization?
I-Graphitization kanye ne-carbonization yizinqubo ezimbili zezimboni. Umehluko omkhulu phakathi kwe-carbonization kanye ne-graphitization ukuthi i-carbonization ihilela ukuguqula izinto eziphilayo zibe yikhabhoni, kuyilapho i-graphitization ihilela ukuguqula i-carbon ibe i-graphite. Ngakho-ke, i-carbonization ingushintsho lwamakhemikhali, kuyilapho i-graphitization iwushintsho lwe-microstructure.
Isikhathi sokuthumela: Sep-29-2021