Menene graphitization?
Graphitization wani tsari ne na masana'antu wanda ake canza carbon zuwa graphite.Wannan shi ne canjin ƙananan ƙananan abubuwa da ke faruwa a cikin carbon ko ƙananan ƙarfe da aka fallasa zuwa yanayin zafi na 425 zuwa 550 digiri na ma'aunin celcius na dogon lokaci, a ce sa'o'i 1,000.Wannan wani nau'i ne na ɓarna.Alal misali, microstructure na carbon-molybdenum karafa sau da yawa ya ƙunshi pearlite (cakuda ferrite da cimentite).Lokacin da aka zayyana kayan, yana sa pearlite ɗin ya lalace zuwa ferrite da graphite da aka tarwatsa bazuwar.Wannan yana haifar da ɓarnawar ƙarfe da raguwar ƙaƙƙarfan ƙarfi lokacin da waɗannan ɓangarori na graphite ke rarraba bazuwar cikin matrix.Duk da haka, za mu iya hana graphitization ta amfani da kayan da mafi girma juriya da cewa ba su da m ga graphitization.Bugu da ƙari, za mu iya canza yanayin ta, misali, ƙara pH ko rage abun ciki na chloride.Wata hanyar hana graphitization ta ƙunshi yin amfani da sutura.Kariyar cathodic na simintin ƙarfe.
Menene carbonization?
Carbonization wani tsari ne na masana'antu wanda ake canza kwayoyin halitta zuwa carbon.Abubuwan da muke la'akari da su a nan sun haɗa da gawar tsirrai da na dabbobi.Wannan tsari yana faruwa ta hanyar distillation mai lalata.Wannan wani nau'i ne na pyrolytic kuma ana ɗaukarsa wani tsari mai rikitarwa wanda yawancin halayen sinadaran lokaci guda za a iya gani.Alal misali, dehydrogenation, condensation, hydrogen canja wurin da isomerization.Tsarin carbonization ya bambanta da tsarin carbonization saboda carbonization tsari ne mai sauri saboda yana amsa umarni da yawa cikin sauri.Gabaɗaya, yawan zafin da ake amfani da shi na iya sarrafa matakin carbonization da adadin abubuwan da suka rage na ƙasashen waje.Misali, abun cikin carbon na ragowar shine kusan 90% ta nauyi a 1200K kuma kusan 99% ta nauyi a kusan 1600K.Gabaɗaya, carbonization wani abu ne na exothermic, wanda za'a iya barin kansa ko amfani dashi azaman tushen makamashi ba tare da samar da wata alama ta iskar carbon dioxide ba.Duk da haka, idan kwayoyin halitta sun fallasa ga canje-canjen zafi na kwatsam (kamar a cikin fashewar nukiliya), kwayoyin halitta zasuyi carbonize da sauri da sauri kuma su zama m carbon.
Graphitization yayi kama da carbonization
Dukansu mahimman hanyoyin masana'antu ne waɗanda suka haɗa da carbon azaman mai amsawa ko samfur.
Menene bambanci tsakanin graphitization da carbonization?
Graphitization da carbonization matakai ne na masana'antu guda biyu.Babban bambanci tsakanin carbonization da graphitization shi ne cewa carbonization ya shafi canza kwayoyin halitta zuwa carbon, yayin da graphitization ya shafi maida carbon zuwa graphite.Don haka, carbonization shine canjin sinadarai, yayin da graphitization shine canjin microstructure.
Lokacin aikawa: Satumba-29-2021